BMW 635 (1990)
Running costs, common problems, and reliability data based on 47 real MOT tests in 2024.
MOT Pass Rate
79%
Total Tests (2024)
47
Avg Mileage
101,349 mi
Est. Annual Cost
£2,397
Is the 1990 BMW 635 reliable?
Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the BMW brand average of 88%.
At 34 years old, 79% of BMW 635s from 1990 passed their MOT first time in 2024. That's based on 47 tests across the UK. The average mileage at this age is 101,349 miles.
How does the 1990 BMW 635 compare?
Mileage Analysis
The average 1990 BMW 635 has 101,349 miles on the clock, which is significantly below the expected 251,600 miles for a 34-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
Best year to buy a BMW 635?
The most reliable year is the 2010 model with a 86% MOT pass rate, while the 2008 model has the lowest at 82%. The 1990 sits between the two at 79%.
How much does a 1990 BMW 635 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
BMW 635 by Year
Checking a specific BMW 635?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 1990 BMW 635
The 1990 BMW 635 is a premium performance with a 3430cc petrol engine. 47 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 1990, the average MOT pass rate is 79%, and this model falls short of that benchmark.
With an average of 101,349 miles at 34 years old, BMW 635 owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
1990 BMW 635 Fuel Costs
The 3430cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 1990 BMW 635?
Total estimated annual running cost is £2,397 (£200/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 79% pass rate. Keeping on top of servicing will help avoid surprises.
BMW 635 Reliability Trend
The BMW 635 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 1990 BMW 635
At 34 years old, the BMW 635 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2010 model has the highest pass rate at 86%. Note: with only 47 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 1990 BMW 635
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- PORSCHE 911 (1990) 91% pass rate (+12%) from 1,888 tests
- MERCEDES 300 (1992) 83% pass rate (+4%) from 1,096 tests
- PORSCHE 944 (1990) 85% pass rate (+6%) from 914 tests
- LAND ROVER DISCOVERY (1991) 78% pass rate (-1%) from 319 tests