Bmw 4 series
Reliability, running costs, and MOT data across 7 years from 3,242 real MOT tests.
Avg Pass Rate
90%
Total Tests
3,242
Best Year
2018 (96%)
Years Covered
7
About the Bmw 4 series
The Bmw 4 series has been tested 3,242 times in 2026 MOT data across 7 model years (2013 to 2019), with an average pass rate of 90%. That's comfortably above the national average of 82%, making it a reliable choice. Available as petrol and diesel.
Best and Worst Years
The 2018 model is the most reliable with a 96% pass rate from 405 tests. The 2016 model has the lowest at 85%. The 11 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
Newer BMW 4 SERIESs show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Mileage Across Years
The oldest model in our data (2013) averages 97,268 miles, while the newest (2019) averages 22,960 miles.
Estimated Running Costs
Based on 7,400 miles/year, current fuel prices, and MOT pass rate data. Insurance not included.
Full 2019 detailsHow reliable is the Bmw 4 series?
Bmw 4 series by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
Bmw 4 series Guides & Articles
How to Prepare for Your MOT: 20 Checks That Could Save You Money
8 min read
Buying GuideCars That Hold Their Value UK 2026 (Up to 71% After 3 Years)
10 min read
Buying GuideCars That Lose Value Fastest: Models to Avoid for Depreciation
8 min read
Buying GuideFord Fiesta Common Problems (2026): What to Check Before Buying
13 min read
ReliabilityFord Puma Problems: 7 Issues Owners Report (2026)
13 min read
Checking a specific Bmw 4 series?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.