
BMW 635 CSi (1976-89)
Production Total: The BMW 635 CSi was produced from 1976 to 1989, with a total of **51,564 units** built during its production run.
*****
Price New: In 1976, the new price of a BMW 635CSi in the UK was approximately £12,000.
The new price of a BMW 635 CSi in 1976 was approximately **£12,000**. Adjusted for inflation to 2025, this would roughly equate to **£85,000**.
*****
Rivals: In 1976, the new prices of some of the main rivals of the BMW 635 CSi in the UK were approximately:
1. **Mercedes-Benz 450 SLC**: £16,000
2. **Porsche 911**: £13,500
3. **Jaguar XJ-S**: £11,750
4. **Aston Martin V8**: £20,000
These prices reflect the competitive landscape of the luxury sports car market during that era.
*****
Recorded in UK 2025
As of the latest data, there are approximately **55 BMW 635 CSi** models currently licensed and on the road in the UK.
*****
PLEASE NOTE: The information provided below is given in averages across Northern Ireland at the date specified. Petrol reflect average prices for four star fuel in litres.
Road Tax: In 1976, the cost of road tax in the UK varied based on the engine size of the vehicle. For cars with an engine size of up to 1549cc, the road tax was **£35 per year**. For cars with larger engines, the tax was **£50 per year**.
*****
Petrol: In 1976, the cost of four-star petrol in the UK was approximately **40 pence per litre**.
*****
Insurance: The average cost of insurance for a comparable BMW E24 model (such as the BMW 630CS or BMW 633CSi) in the UK during 1976 would likely have been between £150 and £300 annually (£1,200–£2,400 adjusted for inflation to today’s values).
*****
1977/COST OF L:IVING UK
In 1977, the average annual salary in the UK was approximately **£3,000**.
£3,000 in 1977 is equivalent to approximately **£18,000** today.
*****
In 1977, the average price of a house in the UK was approximately **£13,650**](https://www.propertyinvestmentproject.co.uk/property-statistics/nationwide-average-house-price/).
£13,650 in 1977 is equivalent to approximately **£82,000** today](https://www.propertyinvestmentproject.co.uk/property-statistics/house-prices-adjusted-for-inflation-graph/).
*****
In 1977, the average price of a new car in the UK was approximately **£3,000**.
£3,000 in 1977 is equivalent to approximately **£18,000** today.
*****
In 1977, the average price of a loaf of bread in the UK was approximately **21 pence**.
21 pence in 1977 is equivalent to approximately **£1.20** today.
*****
In 1977, the average cost per mile for a bus journey in the UK was approximately **2 pence**.
2 pence per mile in 1977 is equivalent to approximately **12 pence per mile** today.
*****
In 1977, the average charge per mile for a taxi journey in the UK was approximately **20 pence**.
20 pence per mile in 1977 is equivalent to approximately **£1.20 per mile** today.
*****
In 1977, the average cost per mile for a railway journey in the UK was approximately **3 pence**.
3 pence per mile in 1977 is equivalent to approximately **18 pence per mile** today.
*****
In 2025, the average cost per mile of a railway journey in the UK is approximately **33 pence per mile**.
In 2025, the average cost per mile of a car journey in the UK is approximately **33 pence per mile**.
*****
In 1977, there were approximately **18 million vehicles** on UK roads.
As of 2025, there are approximately **41.4 million vehicles** on UK roads.
*****

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 BMW 635CSi is a classic beauty, but like any vintage car, it has its quirks. Here are some common issues reported by owners:
1. Cooling System Problems: Many Sixes suffered from engine overheating due to poor cooling system maintenance. To prevent a cracked cylinder head, ensure that all cooling system components are well-maintained.
2. Rust: Rust can be an Achilles’ heel for the 635CSi. Regular inspections and rust prevention measures are essential to keep this beauty in top shape.
3. Electrical Gremlins: As with any older car, electrical issues can arise. Check wiring, connectors, and fuses to ensure everything is functioning correctly.
4. Intermittent Ignition Switch: The ignition switch tends to wear out internally over time. If you experience starting or dying issues, consider checking the ignition switch.
5. Transmission Issues: Automatics may have trouble with the shifter and inhibit switch, which can affect engine performance. If you notice issues during gear changes, have it inspected.
*****
Generations/Trim Levels
Please Note: Generations and Trim Levels Across Countries
Generations and trim levels of vehicles often vary between countries as manufacturers tailor models to meet the preferences and requirements of specific markets. For example, a trim level designated as “GL” in the UK might be labelled as “XS” in another country. Due to these regional differences, the information provided on this site pertains exclusively to UK-specific products.
The BMW 635 CSi, part of the BMW 6 Series, was produced in a single generation known as the **E24**. Here are the trim levels available for the E24 6 Series:
1. **630 CS**: Introduced in 1976, featuring a 3.0L inline-6 engine.
2. **633 CSi**: Introduced in 1976, featuring a 3.2L inline-6 engine.
3. **628 CSi**: Introduced in 1979, featuring a 2.8L inline-6 engine.
4. **635 CSi**: Introduced in 1978, featuring a 3.5L inline-6 engine.
5. **M635 CSi**: Introduced in 1983, featuring a 3.5L inline-6 engine with more power and performance enhancements.
These trim levels offered a range of options and performance capabilities, making the E24 6 Series a versatile and popular choice among luxury sports car enthusiasts.
*****
Engine
The BMW 635 CSi was equipped with a **3.5L inline-6 engine** (3430 cm) known as the **M30**. This engine delivered **215 hp** (218 PS) and **229 lb-ft** (311 Nm) of torque.
*****
Performance
The BMW 635 CSi offered impressive performance for its time. Here are the key performance figures:
- **0-60 mph**: Approximately 7.4 seconds
- **Top Speed**: Around 140 mph (225 km/h)
- **Power Output**: 215 hp (218 PS) from its 3.5L inline-6 engine
These figures made the 635 CSi a strong contender in the luxury sports car market of the late 1970s and 1980s.
*****
Rivals
Here are the performance figures for some of the main rivals of the BMW 635 CSi in 1976:
1. **Mercedes-Benz 450 SLC**:
- **0-60 mph**: Approximately 8.8 seconds
- **Top Speed**: Around 134 mph (215 km/h)
- **Power Output**: 225 hp
2. **Porsche 911**:
- **0-60 mph**: Approximately 7.5 seconds
- **Top Speed**: Around 137 mph (220 km/h)
- **Power Output**: 163 hp
3. **Jaguar XJ-S**:
- **0-60 mph**: Approximately 7.8 seconds
- **Top Speed**: Around 142 mph (229 km/h)
- **Power Output**: 285 hp - pictures, information & specs - NetCarShow.com](https://www.netcarshow.com/jaguar/1976-xj-s/)
4. **Aston Martin V8**:
- **0-60 mph**: Approximately 5.3 seconds
- **Top Speed**: Around 170 mph (274 km/h)
- **Power Output**: 310 hp
These performance figures highlight the competitive nature of the luxury sports car market during that era, with each model offering a unique blend of power and handling.
*****
Designer/Dimensions
The BMW 635 CSi was designed by **Paul Bracq** - Wikipedia](https://en.wikipedia.org/wiki/BMW_6_Series_%28E24%29).
Here are the dimensions of the BMW 635 CSi:
- **Length**: 4,755 mm (187.2 inches)
- **Width**: 1,725 mm (67.9 inches)
- **Height**: 1,365 mm (53.7 inches)
- **Wheelbase**: 2,630 mm (103.5 inches)
- **Curb Weight**: 1,450–1,619 kg (3,197–3,569 lbs).
*****
Spares/Specialists NI
If you're looking for spares for your **BMW 635CSi**, here are some options:
1. **Railway Auto Spares**:
- Located in Ballynahinch, Northern Ireland, Railway Auto Spares specializes in BMW parts.
- They offer genuine spare parts for various BMW models, including the 635CSi.
- Check out their [website](https://www.railwayautospares.com/).
2. **Bavarian BMW**:
- Bavarian BMW, based in Belfast, offers expert knowledge and genuine BMW parts.
- They cater to specialized needs of BMW drivers and maintain high dealership standards.
- Visit their [website](https://www.agnewcars.com/bmw/).
3. **Prentice BMW**:
- Prentice is an award-winning BMW dealership in Portadown, Northern Ireland.
- They provide new and used BMW sales as well as genuine parts.
- Explore their offerings at their [website](https://www.prenticebmw.co.uk/contact-us/).
**
Specialists NI
There are several specialist garages in Northern Ireland that can service and repair your BMW 635 CSi. Here are a few options:
1. **[PJS Auto Engineering](http://www.pjsautoengineering.co.uk/bmw-specialist-northern-ireland.html)**: Located in Bellaghy, they offer a wide range of services for BMWs, including diagnostics, servicing, and repairs.
2. **[McEvoy Motors](https://www.mcevoymotors.com/index.php/31/)**: Based in Carryduff, near Belfast, they are a German car specialist equipped to work on all types of BMWs, including the 635 CSi.
3. **[Bavarian BMW](https://www.agnewcars.com/bmw/servicing-maintenance/)**: Located in Belfast, they provide BMW-approved servicing and maintenance, ensuring your car is looked after by experienced BMW technicians.
These garages should be able to provide the specialist services you need for your BMW 635 CSi.
*****
Racing
The BMW 635 CSi was a prominent competitor in racing, particularly in the **Group A** touring car category. It achieved significant success in various racing series, including:
1. **European Touring Car Championship (ETCC)**: The 635 CSi was a dominant force, winning multiple championships.
2. **Deutsche Tourenwagen Meisterschaft (DTM)**: The 635 CSi competed in the DTM, securing numerous victories.
3. **24 Hours of Spa**: The 635 CSi achieved several wins in this prestigious endurance race.
4. **24 Hours of Nürburgring**: The 635 CSi also had success in this challenging endurance race.
The 635 CSi's racing pedigree and success on the track helped solidify its reputation as a formidable and iconic sports car.
*****
Valuation
The value of a BMW 635 CSi in the UK today can vary significantly based on its condition, mileage, and originality. On average, you can expect to pay between **£15,000 and £45,000** for a well-maintained example.
*****
Clubs
BMW owners in Northern Ireland can find clubs to join and connect with fellow enthusiasts. Here are a couple of options:
1. **BMW Club Ulster Section**: This club is part of the official BMW Club, which encompasses the United Kingdom and the Republic of Ireland. They organize a variety of events throughout the year, including meet-ups, ride-outs, and tours. You can find more information on their [website](https://www.bmwclubulstersection.com/).
2. **BMW Car Club GB - Irish Region**: This club covers both Northern Ireland and the Republic of Ireland. They host fun drives, local meetings, shows, and exhibitions. More details can be found on their [website](https://bmwcarclubgb.uk/regions/ireland/).
These clubs offer great opportunities to meet other BMW enthusiasts, participate in events, and share your passion for BMWs.
*****