BMW 420 (2015)
Running costs, common problems, and reliability data based on 23,559 real MOT tests in 2024.
MOT Pass Rate
88%
Total Tests (2024)
23,559
Avg Mileage
82,955 mi
Est. Annual Cost
£1,867
Is the 2015 BMW 420 reliable?
Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.
At 9 years old, 88% of BMW 420s from 2015 passed their MOT first time in 2024. That's based on 23,559 tests across the UK. The average mileage at this age is 82,955 miles.
How does the 2015 BMW 420 compare?
Mileage Analysis
The average 2015 BMW 420 has 82,955 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 420?
The most reliable year is the 2021 model with a 94% MOT pass rate, while the 2013 model has the lowest at 85%. The 2015 sits between the two at 88%.
How much does a 2015 BMW 420 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 420 by Year
Checking a specific BMW 420?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2015 BMW 420
The 2015 BMW 420 is a premium with a 1997cc petrol engine. 23,559 of these vehicles were MOT tested in 2024, making it one of the most commonly tested cars 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 82,955 miles at 9 years old, BMW 420 owners cover more miles than the average driver.
2015 BMW 420 Fuel Costs
The 1997cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2015 BMW 420?
Total estimated annual running cost is £1,867 (£156/month), broken down as £1327 fuel, £135 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.
BMW 420 Reliability Trend
Newer BMW 420s show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 2015 BMW 420
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 2021 model has the highest pass rate at 94%. With 23,559 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2015 BMW 420
The BMW 420 is actually the most reliable option among similar petrol premiums from this era. Here are comparable petrol cars with similar engines:
- FORD FOCUS (2013) 78% pass rate (-10%) from 132,292 tests
- NISSAN QASHQAI (2013) 72% pass rate (-16%) from 84,989 tests
- BMW 3 SERIES (2015) 88% pass rate (same) from 61,659 tests
- MERCEDES C (2014) 85% pass rate (-3%) from 54,729 tests