BMW 4 SERIES (2015)
Running costs, common problems, and reliability data based on 68 real MOT tests in 2024.
MOT Pass Rate
87%
Total Tests (2024)
68
Avg Mileage
80,358 mi
Est. Annual Cost
£1,577
Is the 2015 BMW 4 SERIES reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 9 years old, 87% of BMW 4 SERIESs from 2015 passed their MOT first time in 2024. That's based on 68 tests across the UK. The average mileage at this age is 80,358 miles.
How does the 2015 BMW 4 SERIES compare?
Mileage Analysis
The average 2015 BMW 4 SERIES has 80,358 miles on the clock, which is above the expected 66,600 miles for a 9-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a BMW 4 SERIES?
The most reliable year is the 2018 model with a 96% MOT pass rate, while the 2016 model has the lowest at 85%. The 2015 sits between the two at 87%.
How much does a 2015 BMW 4 SERIES 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 4 SERIES by Year
Checking a specific BMW 4 SERIES?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2015 BMW 4 SERIES
The 2015 BMW 4 SERIES is a premium with a 1995cc diesel engine. 68 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 2015, the average MOT pass rate is 83%, and this model beats that benchmark.
With an average of 80,358 miles at 9 years old, BMW 4 SERIES owners cover more miles than the average driver.
2015 BMW 4 SERIES Fuel Costs
The 1995cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2015 BMW 4 SERIES?
Total estimated annual running cost is £1,577 (£131/month), broken down as £1037 fuel, £135 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 87% pass rate. Keeping on top of servicing will help avoid surprises.
BMW 4 SERIES Reliability Trend
Newer BMW 4 SERIESs show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Buying a Used 2015 BMW 4 SERIES
At 9 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2018 model has the highest pass rate at 96%. Note: with only 68 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2015 BMW 4 SERIES
If reliability is your priority, there are 2 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2017) 91% pass rate (+4%) from 127,682 tests
- VAUXHALL ASTRA (2013) 79% pass rate (-8%) from 101,969 tests
- AUDI A3 (2015) 88% pass rate (+1%) from 80,797 tests
- FORD TRANSIT (2017) 81% pass rate (-6%) from 80,031 tests