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Austin A105 Westminster (1954-59)

The **Austin A105 Westminster (1954-59)** was introduced as a more refined, performance-oriented version of the **Austin A90 and A95 models**, targeting the growing demand for **luxurious yet affordable British executive saloons**. Austin aimed to offer a **balance of comfort, power, and practicality**, making it an appealing choice for professionals and families seeking an elegant yet capable vehicle.


Equipped with a **2.6-litre C-Series inline-six engine**, the A105 delivered **enhanced performance**, particularly with its **twin SU carburettors** and **optional Borg-Warner overdrive**, making long-distance cruising more effortless. Styled with **two-tone paint options and improved interior features**, it was positioned as a **prestige model within Austin’s lineup**.


Expectations were high, as the A105 was meant to compete with similar offerings from **Ford, Rover, and Humber**, proving that Austin could deliver a **well-appointed saloon without sacrificing practicality or affordability**. Would you like insights on its sales success or impact on later Austin models?

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Popularity

The **Austin A105 Westminster (1954-59)** was not a globally popular vehicle in the same way as some of its contemporaries, but it did have a **strong presence in the UK and select international markets**.


**Market Reach**

- **United Kingdom** – The A105 was primarily designed for the **British executive market**, competing with **Ford, Rover, and Vauxhall** | StillMotoring](https://www.stillmotoring.co.uk/items/austin--a105-westminster-%281954-59%29).

- **Australia** – Some units were assembled in **Sydney**, making it available to Australian buyers.

- **Limited Export** – While Austin had a global footprint, the A105 was **not a high-volume export model**, unlike some of BMC’s smaller cars Review](https://classics.honestjohn.co.uk/reviews/austin/a90a95a105-westminster/).


**Collector Interest**

- **Rarity** – With only **6,770 units produced**, the A105 is now considered a **rare classic** ; StillMotoring](https://www.stillmotoring.co.uk/items/austin--a105-westminster-%281954-59%29).

- **Executive Appeal** – The **Vanden Plas variant** was particularly sought after for its **luxurious interior and refined styling** Review](https://classics.honestjohn.co.uk/reviews/austin/a90a95a105-westminster/).

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Austin  A105 Westminster (1954-59)

Overview: The **Austin A105 Westminster**, introduced in **1954**, was a significant model for Austin and the **British Motor Corporation (BMC)**, as it represented a move toward **larger, more refined executive saloons**. It was part of the **Westminster series**, which aimed to offer **smooth six-cylinder performance** in a **semi-upmarket package**.


Key Significance:

- **BMC’s Push into the Executive Market**: The A105 was designed to compete with **Ford, Rover, and Vauxhall**, offering a **luxurious yet affordable alternative**.

- **Six-Cylinder Power**: It featured the **C-Series straight-six engine**, providing **stronger performance** than Austin’s smaller models.

- **Evolution of the Westminster Line**: The A105 was an **upgraded version of the A95**, featuring **twin carburettors, lowered suspension, overdrive as standard, and two-tone paint**.

- **Influence on Later Models**: The success of the Westminster series helped shape **future Austin executive cars**, leading to models like the **Austin 3-Litre**.


The **A105 Westminster** was a **refined, stylish saloon** that helped Austin establish a presence in the **executive car market**. 

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COMMON FAULTS

Please Note: Common Faults in Regularly Used Vehicles vs. Low-Mileage Stored Vehicles that have been used consistently over many years, accumulating approximately 10,000–12,000 miles annually, are more prone to common faults due to regular wear and tear. These issues typically arise from the natural aging of components subjected to frequent use, such as engine parts, suspension systems, brakes, and tires. In contrast, vehicles with low mileage that have been stored or preserved are likely to experience different types of issues. These vehicles are often better maintained to ensure their longevity and may avoid some of the typical wear-and-tear problems seen in regularly driven cars. However, they can still face unique challenges such as degradation of rubber seals, corrosion from prolonged inactivity, or fuel system issues caused by old or stagnant fuel.


The Austin A105 Westminster, produced from 1954 to 1959, was a solid middle-class saloon that combined a smooth six-cylinder engine with a semi-upmarket design. Here are some insights into common issues with the A105 Westminster:


1. Sloppy Road Manners: In its standard form, the A105 Westminster had sloppy road manners. Handling and ride quality were not its strong points.

2. Rust and Corrosion: Like many cars of its era, the A105 was susceptible to corrosion. Regular inspections and rust prevention measures were crucial to maintain its structural integrity.

3. Interchangeable Parts: While it may have looked similar to the smaller A40 and A50 Cambridge models, only the doors were actually interchangeable between the A105 and its smaller cousins.

4. A105 vs. A95: The A105 was part of a range that included the A95. The A105 was the star of the lineup, featuring twin carburettors, lowered suspension, overdrive as standard, and two-tone paint. The A95 gained a bit more power but didn’t have the same sporty features.

5. Vanden Plas Version: A badge-engineered Vanden Plas version of the A105 Westminster was also built. It boasted a wood and leather-lined interior, adding a touch of luxury to this solid saloon.


Despite its quirks, the Austin A105 Westminster remains a classic with a loyal following among enthusiasts

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Generations

The Austin Westminster series included several generations of large saloon and estate cars produced by Austin from 1954 to 1968. Among these, the A105 was one of the variants. Here’s a breakdown:


1. A90 Westminster: The initial model, introduced in 1954 as a semi-upmarket saloon with a straight-six engine.

2. A95 and A105: In 1956, the Westminster became the A95 and A105. Both featured larger rear windows, squarer rear wing lines, and new grilles. The A105 was the star of the range, equipped with twin carburettors, lowered suspension, overdrive, and two-tone paint.

3. A110: The series continued through five generations, including the A99 and A110, before being replaced by the new Austin 3-Litre in 1968.


Overall, approximately 101,634 examples of the Westminster were produced during its lifespan.


Body Styles

The Austin A105 Westminster was available in two primary body styles:

1. Short-Tail Saloon: Introduced in the 1956 model year, this version had a shorter tail.

2. Long-Wheelbase Saloon: Most A105s were the long-wheelbase, long-tail facelift variety, which featured a larger rear window, squarer rear wing lines, and a new grille.


Versions

The Austin A105 Westminster had two main versions:

1. The first version was based on the A90 Westminster in 1956.

2. The next version came out in 1957 and was based on the A95 Westminster, which was also available as a Vanden Plas

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Designer/Dimensions

The **Austin A105 Westminster**, produced between **1956 and 1959**, was a higher-powered derivative of the **A90 Westminster**](https://www.co-oc.org/vehicles/austin-westminster-a105). It was designed and manufactured by **Austin**, part of the **British Motor Corporation (BMC)**, at their **Longbridge** plant](https://www.co-oc.org/vehicles/austin-westminster-a105).


**Dimensions**

- **Height:** 5ft 3.75in (162 cm)](https://www.co-oc.org/vehicles/austin-westminster-a105)

- **Wheelbase:** 8ft 9.75in (268 cm)](https://www.co-oc.org/vehicles/austin-westminster-a105)

- **Overall Length:** 15ft 0.7in (459 cm)](https://www.co-oc.org/vehicles/austin-westminster-a105)


This model featured a **2.6-litre C-Series engine**, twin **SU carburettors**, and **Borg-Warner overdrive** as standard](https://www.co-oc.org/vehicles/austin-westminster-a105). It was known for its **smooth six-cylinder power**, lowered suspension, and **two-tone paint options** Review](https://classics.honestjohn.co.uk/reviews/austin/a90a95a105-westminster/). The A105 was discontinued in **1959**, making way for the **A99 Westminster**](https://www.co-oc.org/vehicles/austin-westminster-a105).

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Where Manufactured: The **Austin A105 Westminster** was manufactured at **Longbridge, England**, by **Austin**, which was part of the **British Motor Corporation (BMC)** at the time. Additionally, some units were assembled in **Sydney, Australia**, for the local market.

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Production Total: The Austin A105 Westminster, produced between 1954 and 1959, had a total production of **6,770 units**. ***** 


Price New: In 1954, the new price for an Austin A105 Westminster in the UK was approximately **£1,093**. This classic car was quite a luxury purchase at the time! To find out what £1,093 from 1954 would be worth in 2025, we can use an inflation calculator. According to the Bank of England's inflation calculator, £1,093 in 1954 is equivalent to approximately **£30,000** in 2025. 

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Sales: The **Austin A105 Westminster** was a respectable entry in the **middle-class saloon market**, but it wasn't a runaway success. It was produced alongside the **A95 Westminster**, and while the A95 saw **28,065 units built**, the A105 had a much lower production figure of **6,770 units**. 


The A105 was positioned as a **higher-spec version**, featuring **twin carburettors, lowered suspension, and overdrive as standard**, making it a more premium offering. However, its **higher price** limited its appeal compared to the A95. The A105 was also the first Austin model to receive a **Vanden Plas luxury treatment**, which added further exclusivity but didn't necessarily translate into mass-market success Review](https://classics.honestjohn.co.uk/reviews/austin/a90a95a105-westminster/). 

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Highest Sales Figures by Country

The **Austin A105 Westminster** was primarily sold in the **United Kingdom**, but it also had a presence in **Australia**, where some units were assembled locally. While exact country-specific sales figures are difficult to pinpoint, the total production of the A105 was **6,770 units**. 


The UK was undoubtedly the **largest market**, given Austin's strong domestic presence. Australia was another key market, as British cars were popular there during the 1950s, and local assembly helped reduce import costs. 

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Historical Pricing Comparisons

The **Austin A105 Westminster** had a **new price of approximately £1,093** in the UK when it was launched in **1954**. Adjusted for inflation, that would be significantly higher in today's money.


**Historical Pricing Trends**

- **Original Price (1954):** ~£1,093

- **Current Market Value (2025):** ~£5,800 (average condition)

- **Highest Recorded Sale:** **£30,140**

- **Auction Estimates:** Some pristine examples, like the **1959 Vanden Plas edition**, have been valued between **£26,000 - £30,000**.


The **Vanden Plas edition** was a particularly sought-after variant, featuring **luxury trim, walnut facia, and leather upholstery**, which contributed to its higher valuation.

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Most Favoured Colour

The **Austin A105 Westminster** was available in a variety of **duo-tone colour schemes**, which were particularly popular among buyers. Some of the most favoured colours included:


- **Black & Maroon** – A classic combination, often seen on the **Vanden Plas edition**.

- **Light Blue & White** – A stylish contrast that complemented the car’s elegant lines.

- **Dark Green & Cream** – A sophisticated choice, giving the A105 a distinguished look.

- **Grey & Silver** – A subtle yet refined option, often paired with **whitewall tyres**.


The **Vanden Plas version** of the A105 was especially known for its **luxury paint schemes**, featuring **side flashes and badges** that added to its exclusivity](https://www.co-oc.org/vehicles/austin-westminster-a105).

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Main Rivals (Price): In 1954, the Austin A105 Westminster had several rivals in the UK market. Here are some of the new prices for these competing models: - 

**Ford Anglia**: £511 - 

**Ford Prefect**: £360 - 

**Bristol 404**: £2,976 

These prices give a sense of the range of options available to car buyers in the mid-1950s. The Austin A105 Westminster was positioned as a more luxurious and higher-end option compared to some of its rivals. 

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Main Rivals (Performance): The **Austin A105 Westminster** faced competition from several British saloons in the **mid-to-late 1950s**, each offering varying levels of performance:


**Main Rivals & Performance**

- **Ford Zodiac Mk II** – **2.5L straight-six**, **86 hp**, **top speed ~90 mph**

- **Humber Hawk** – **2.3L four-cylinder**, **70 hp**, **top speed ~85 mph**

- **Morris Isis Series II** – **2.6L straight-six**, **90 hp**, **top speed ~92 mph**

- **Vauxhall Cresta E** – **2.2L straight-six**, **82 hp**, **top speed ~88 mph**

- **Standard Vanguard Sportsman** – **2.0L four-cylinder**, **100 hp**, **top speed ~98 mph**


The **Standard Vanguard Sportsman** was particularly notable for its **modified Triumph TR3 engine**, making it one of the fastest in its class. The **Austin A105**, with its **2.6L twin-carburettor engine**, was competitive, offering **102 hp** and a **top speed of ~96 mph**.

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Engine

The **Austin A105 Westminster (1954-59)** was powered by a **2.6-litre C-Series inline-six engine**, which was a more powerful version of the unit used in the earlier **Austin A90 and A95 models**.


**Engine Specifications**

- **Displacement**: 2.6 litres (2639cc)

- **Power Output**: 102 bhp at 4600 rpm

- **Torque**: 141 lb-ft at 2600 rpm

- **Carburettors**: Twin SU carburettors for improved fuel delivery

- **Transmission**: Standard **Borg-Warner overdrive** (operating on top and third gears)

- **Performance**:

  - **Top Speed**: 96 mph

  - **0-60 mph**: 15.4 seconds

  - **Standing 1/4-mile**: 20.2 seconds

  - **Fuel Consumption**: 22 mpg


The **Austin A105 Westminster** was designed as a more refined and powerful executive saloon, offering **better acceleration and comfort** compared to its predecessors](https://www.co-oc.org/vehicles/austin-westminster-a105). 

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Performance

The **Austin Westminster A105 (1954-59)** was designed as a more powerful and refined version of the earlier **A90 and A95 models**, offering **stronger acceleration and improved handling**.


**Performance Specifications**

- **Engine**: 2.6-litre C-Series inline-six

- **Power Output**: 102 bhp at 4600 rpm

- **Torque**: 141 lb-ft at 2600 rpm

- **Transmission**: Borg-Warner overdrive (standard on top and third gears)

- **Top Speed**: 96 mph

- **0-60 mph**: 15.4 seconds

- **Standing 1/4-mile**: 20.2 seconds

- **Fuel Consumption**: 22 mpg


**Key Features**

- **Twin SU Carburettors** – Improved fuel delivery for better performance.

- **Lowered Suspension** – Enhanced stability and handling.

- **Two-Tone Paint Options** – A stylish addition to distinguish it from the A95.

- **Optional Automatic Transmission** – Introduced in later models for added convenience.


The **A105 Westminster** was positioned as a **premium executive saloon**, offering a balance of **performance, comfort, and refinement**; StillMotoring](https://www.stillmotoring.co.uk/items/austin--a105-westminster-%281954-59%29) Review](https://classics.honestjohn.co.uk/reviews/austin/a90a95a105-westminster/)](https://www.co-oc.org/vehicles/austin-westminster-a105). 

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Historical Advertisements & Marketing Strategy

The **Austin A105 Westminster** was marketed as a **premium, high-performance saloon**, positioned above the A95 Westminster. Its advertising strategy focused on **luxury, power, and refinement**, appealing to middle-class buyers who wanted something more upmarket than a standard Austin.


**Marketing Strategy & Advertisements**

- **Performance-Oriented Messaging** – Ads emphasized the **twin-carburettor 2.6L engine**, offering **102 hp** and a **top speed of ~96 mph**.

- **Luxury Appeal** – The **Vanden Plas edition** was highlighted in marketing, showcasing **walnut facia, leather upholstery, and thick carpets**.

- **Two-Tone Paint & Styling** – Advertisements often featured **two-tone paint schemes**, whitewall tyres, and chrome detailing to enhance its premium image.

- **Competitive Pricing** – Compared to rivals like the **Rover P4**, Austin positioned the A105 as a **high-value alternative**, offering similar luxury at a lower price.

- **Export Market** – Some ads targeted **Australian buyers**, where the A105 was assembled locally.


Austin’s marketing emphasized **comfort, effortless cruising, and prestige**, making the A105 a desirable choice for buyers looking for a refined British saloon.

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Rarity & Collector Appeal

The **Austin A105 Westminster** is considered a **rare and desirable classic**, particularly in its **Vanden Plas edition**. With only **6,770 units** produced between **1956 and 1959**, it is significantly less common than its sibling, the **A95 Westminster**](https://www.co-oc.org/vehicles/austin-westminster-a105).


**Collector Appeal**

- **Limited Production** – The A105 was a **higher-spec version** of the A95, making it rarer.

- **Vanden Plas Edition** – Only **500 units** of the **luxury-trimmed Vanden Plas** variant were built, making it highly sought after.

- **Classic British Saloon** – Its **smooth six-cylinder engine**, **two-tone paint options**, and **overdrive as standard** add to its appeal.

- **Auction Prices** – Well-preserved examples, especially the **Vanden Plas edition**, have fetched between **£26,000 - £30,000**.

- **Survivor Cars** – Many A105s have been lost to time, making **original, unrestored examples** particularly valuable.

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Recorded in UK 2025: As of 2025, there are **30 Austin A105 Westminster** cars recorded in the UK. Out of these, **21 are licensed** and **9 are registered as SORN (Statutory Off Road Notification)**. 

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Target Age Group

The **Austin A105 Westminster**, produced between **1956 and 1959**, was primarily aimed at **middle-class professionals and families** who wanted a comfortable, spacious, and well-appointed British saloon. It was positioned as a **premium version** of the Austin Westminster range, featuring more luxurious trim and a more powerful engine.


While there wasn’t a strict age group defined for its target market, it was generally marketed towards **middle-aged buyers**—those in their **30s to 50s**—who valued refinement, reliability, and a touch of prestige in their vehicle. The **Vanden Plas variant**, in particular, was designed to appeal to executives and those seeking a more upmarket experience.

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Influence of Target Age Group

The **Austin A105 Westminster** was primarily aimed at **middle-class professionals and families** who wanted a **comfortable, spacious, and well-appointed British saloon**. This target demographic influenced several aspects of the car’s design and marketing:


**Influence on Design**

- **Spacious Interior** – Designed to accommodate families and business professionals who valued comfort.

- **Luxury Features** – The **Vanden Plas edition** catered to executives, offering **walnut facia, leather upholstery, and thick carpets**.

- **Smooth Performance** – The **six-cylinder engine** provided effortless cruising, appealing to those who prioritized refinement over sportiness.


**Influence on Marketing**

- **Prestige Positioning** – Advertisements emphasized **status and sophistication**, making it attractive to professionals.

- **Two-Tone Paint Options** – Aimed at buyers who wanted a stylish, distinguished vehicle.

- **Export Appeal** – The car was marketed in **Australia**, where British cars were popular among middle-class buyers.

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Parts Bin Engineering

The **Austin A105 Westminster** was a classic example of **parts bin engineering**, where components were shared across multiple models within the **British Motor Corporation (BMC)** to reduce costs and streamline production.


**Shared Components**

- **Engine:** The **2.6L C-Series straight-six** was also used in the **Morris Isis** and **Wolseley 6/90**.

- **Transmission:** The **four-speed manual gearbox** was common across several BMC models, including the **Austin-Healey 100/6**.

- **Suspension:** The **front suspension setup** was similar to that of the **Austin A90 Westminster** and **Morris Oxford**.

- **Interior Trim:** Many **switchgear and dashboard elements** were borrowed from other Austin and Morris models.

- **Braking System:** The **drum brakes** were shared with the **Wolseley 6/90** and **Morris Isis**.


This approach allowed BMC to **maximize efficiency** while maintaining a **distinct identity** for each model. The A105 benefited from **proven mechanical components**, making it a **reliable and well-engineered saloon**.

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Spares

If you’re looking for Austin A105 Westminster spare parts in the UK and Ireland, here are some options:

1. British Classic Spare Parts: They offer a range of parts for various Austin models, including the A105. You can find items like wipers, arms, switches, gauges, suspension components, lighting, and more.

2. Earlpart Longbridge Motor Spares: Their catalogue includes parts for the A90, A95, A105, A99, A110 Westminster, as well as the Princess Vanden Plas and other related models.

3. MEV Spares: While they specialize in clutch, brake, and hydraulic components, they might have some compatible parts for the A105 Westminster.

Remember to check availability and compatibility with your specific model

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Specialists

Here are some specialists in the UK and Ireland who can help with your Austin Maxi:

1. **The Cambridge-Oxford Owners Club**: This club offers support, parts, and advice for owners of various Austin models, including the A105i.

2. **Honest John Classics**: They provide reviews and information on classic cars, including the A105.

3. **Classic Cars for Sale UK**: A marketplace for buyers and traders of classic cars, where you can find parts and services for the A105i.


**NORTHERN IRELAND AUSTIN SPECIALIST LIST**

Austin specialist mechanics in County Antrim, Northern Ireland:

1. McMillan Specialist Cars: They offer a wide range of services including maintenance, repairs, and full restorations. They are located at Unit 10, Plasketts Close, Kilbegs Road, Antrim BT41 4NN. You can contact them at 028 9335 49111.

2. Nufinish: With over 18 years of experience, they handle smart cosmetic and light damage repairs. They are located at Unit 24, Antrim Business Park, Randalstown Road, Antrim BT41 4LH. Their contact number is 028 9446 60142.

3. D S Autos: This garage specialises in all makes and models of car repairs, including servicing, diagnostics, and more. They are based at 67 Church St, Antrim BT41 4BE. You can reach them at 028 9446 66623.


Austin Specialists in County Armagh Northern Ireland

Here are a few options for Austin specialist mechanics in County Armagh, Northern Ireland:

1. McMullan Auto Services: They offer a range of services including car servicing, maintenance, diagnostics, and repairs. They are located at 85A Fergort Rd, Armagh BT60 3DN. You can contact them at 028 3753 17661.

2. Elite Motor Performance: This garage provides various auto repair services and is based in Armagh2.

3. Pittstop: Another option in Armagh, offering comprehensive garage services2.


Austin Specialist in County Down Northern Ireland

John Chatham Cars

• Location: Wellinghouse Farm, Moorhouse Lane, Hallen, Bristol BS10 7RT

• Services: Specializes in restoring, treating, and maintaining Austin Healeys and other classic British sports cars from the '50s, '60s, and '70s. They offer classic car restoration, servicing, and race preparation.

• Contact: You can reach them at 0117 950 1836. More information is available on their website.

Merlin Classic Cars

• Location: The Ropery, Unit 1C Redmoor Lane, Stockport SK22 3JL

• Services: Renowned for their restoration, maintenance, race preparation, and sales of all Austin Healey marques. They have over 30 years of experience in restoring classic and vintage vehicles.

• Contact: You can contact them at 01663 746499. More details can be found on their website.


Austin mechanic specialist in County Fermanagh Northern Ireland

1. Lochside Garages: While they are primarily Vauxhall dealers, they offer comprehensive servicing and repairs for various car brands. They are located at 22 Tempo Road, Enniskillen BT74 6HR. You can contact them at 028 6632 4366.

2. Enniskillen Motor Services: They provide a range of vehicle services, including diagnostics, repairs, and maintenance. They are based in Enniskillen.


Austin specialist mechanics in County Londonderry, Northern Ireland:

1. Lloyd Cooke Motors Ltd: They provide expert vehicle maintenance and car bodywork repairs. Located at 53 Lismacarol Road, Londonderry BT47 3LZ. You can contact them at 028 7130 2100.

2. S M C Motors: Offering a range of garage services throughout County Londonderry.

3. Satnams Garage: Another reliable option for various auto repair services in Londonderry.


Austin specialist mechanics in County Tyrone, Northern Ireland:

1. KG Truck & Plant: Based in Dungannon, they offer mobile mechanics for plant machinery and hydraulic repairs. They provide 24/7 on-site services and have over 20 years of experience. You can contact them at 07771 904 505.

2. NR Trucks Ltd: Located at 70 Armagh Road, Dungannon, they offer a range of services for commercial vehicles. You can reach them at 028 8778 9775.

3. Tyrone Diesel Systems: Specialising in the testing and repair of diesel fuel systems, they are the only fully-authorised Bosch Diesel Centre in Northern Ireland. They are based in Omagh

These specialists should be able to assist you with parts, advice, and support for your Austin Maxi.

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Manufacturer Recommended

Engine Oil: Austin originally recommended **Castrol XL** for the **Austin A105 Westminster (1954-59)**, which was a **monograde SAE 30 oil**. This oil was suited to the **C-Series six-cylinder engine**, providing adequate lubrication for the era’s tolerances and materials.


**Modern Equivalents**

Today, classic car specialists and enthusiasts often use:

- **SAE 20W-50** – A **high-zinc content** oil, ideal for older engines with flat tappet camshafts.

- **Classic 30 or 40 Grade Oils** – Some prefer **SAE 40** for warmer climates.

- **Castrol Classic XL 20W-50** – A direct modern replacement with similar viscosity and additives.

- **Morris Golden Film SAE 30 or 20W-50** – A well-regarded classic oil option.

- **Penrite Classic Light 20W-60** – Offers slightly higher viscosity for worn engines.


Regular oil changes are **essential** for maintaining engine health, especially in classic cars. 

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Transmission Oil: Austin originally recommended **Castrol XXL** for the **Austin A105 Westminster (1954-59)**, which was a **monograde SAE 40 oil**. This oil was suited to the **four-speed manual transmission**, providing adequate lubrication for the gearbox components.


**Modern Equivalents**

Today, classic car specialists and enthusiasts often use:

- **SAE 40 or SAE 50** – A straight-grade oil, ideal for older gearboxes.

- **Castrol Classic XL 20W-50** – A multigrade alternative with similar viscosity.

- **Morris Golden Film SAE 40** – A well-regarded classic oil option.

- **Penrite Transoil 140** – Suitable for gearboxes with non-synchro components.

- **Millers Classic Gear Oil EP 80W-90** – A mild EP oil for smoother shifts.


Regular oil changes are **essential** for maintaining gearbox health, especially in classic cars. 

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Tyres: Austin originally recommended **600-15 or optional 640-15 crossply tyres** for the **Austin A105 Westminster (1954-59)**. These tyres were standard for many British saloons of the era.


**Modern Equivalents**

Today, classic car specialists suggest the following radial replacements:

- **185R15** – A widely accepted modern radial equivalent.

- **Michelin XVS 185VR15** – Offers improved handling and stability.

- **Pirelli Cinturato CA67 185VR15** – A period-correct radial tyre.

- **Avon Super Safety 640H15** – A crossply option for authenticity.

- **Vredestein Sprint Classic 185/80R15** – A well-regarded classic tyre.


For those seeking **whitewall tyres**, Michelin and Pirelli offer **185R15 whitewall options**. 

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Petrol: Austin originally recommended **premium leaded petrol** with an **octane rating of around 97 RON** for the **Austin A105 Westminster (1954-59)**. This was necessary to support the **2.6L C-Series six-cylinder engine**, which relied on higher-octane fuel for optimal performance.


**Modern Equivalents**

Since leaded petrol is no longer widely available, classic car owners typically use:

- **Super Unleaded (97-99 RON)** – The closest modern equivalent.

- **E5 Petrol (97 RON)** – Contains **up to 5% ethanol**, safer for older engines.

- **Lead Replacement Additives** – Helps protect **valve seats** from wear.

- **Shell V-Power (99 RON)** – A premium fuel with cleaning additives.

- **BP Ultimate (97 RON)** – A reliable high-octane alternative.


Using **lead replacement additives** is highly recommended to **prevent valve seat recession** in classic engines. 

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Racing

The Austin A105 Westminster did take part in racing. Notably, it was involved in the inaugural year of the British Saloon Car Championship (now known as the British Touring Car Championship) in 1958. The A105, driven by Jack Sears, won the championship that year. This victory marked the A105 as one of the early champions in British saloon car racing history.


The 1958 British Saloon Car Championship (BSCC) was the inaugural season of what is now known as the British Touring Car Championship (BTCC). Here are some key details:

- **Classes**: The championship was divided into four classes based on engine capacity: up to 1200cc, 1201-1600cc, 1601-2700cc, and 2701cc and above.

- **Points System**: Equal championship points were awarded in each class, meaning any driver could win the championship without necessarily winning races outright.

- **Notable Event**: The first round was held on December 26, 1957, at Brands Hatch.

- **Championship Decider**: The season ended dramatically with Jack Sears and Tommy Sopwith tied on points. The championship was decided by a unique shoot-out using identical Riley One-Point-Five works rally cars¹. Jack Sears emerged as the first BSCC champion.

This championship laid the foundation for what has become one of the most popular touring car series in the world.

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Valuation

The **Austin A105 Westminster (1954-59)** has an estimated market value of **£5,800** in **average condition** in the UK in **2025**. However, prices can vary significantly based on condition and rarity:


**Valuation Breakdown**

- **Fair Condition:** ~£3,200

- **Good Condition:** ~£6,100

- **Excellent Condition:** ~£8,200

- **Concours Condition:** ~£11,700

- **Highest Recorded Sale:** **£30,140** for a **Vanden Plas edition**


Auction estimates for **pristine examples**, especially the **Vanden Plas edition**, range between **£26,000 - £30,000**. 

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Investment Assessment

The **Austin A105 Westminster (1954-59)** would likely be rated around **3 out of 5** as a financial investment. While it is a **rare and desirable classic**, particularly in its **Vanden Plas edition**, its **market value** remains moderate compared to more iconic British classics.


 **Investment Factors**

- **Rarity (✅ Positive)** – With only **6,770 units** produced, it is relatively scarce.

- **Collector Appeal (✅ Positive)** – The **Vanden Plas edition** is highly sought after.

- **Market Value (⚠️ Moderate)** – Average condition examples sell for **~£5,800**, while pristine versions can reach **£30,000**.

- **Restoration Costs (⚠️ Considerable)** – Parts availability is decent, but restoration can be expensive.

- **Long-Term Appreciation (✅ Positive)** – Prices have been rising, but not as dramatically as some other British classics.


While it is a **solid investment**, it may not offer the **highest returns** compared to more famous models like the **Jaguar Mk2** or **Austin-Healey 3000**. However, for enthusiasts who appreciate its **luxury and rarity**, it remains a **worthwhile classic**.

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Clubs

If you're looking for **Austin A105 Westminster** owner clubs in **Northern Ireland**, you might want to check out the **Austin Cambridge / Westminster Car Club**. This club caters to owners of various **Austin Westminster models**, including the **A105**, and provides support for restoration, technical advice, and events.


Another great option is the **Cambridge-Oxford Owners Club**](https://www.co-oc.org/vehicles/austin-westminster-a105), which includes Austin Westminster models among its supported vehicles. They offer **historical insights, technical resources, and community events** for enthusiasts.

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