BMW I4 M50 MOT pass rate: 83.9% (1,918 tests, 2025)

The BMW I4 M50 passed 83.9% of its 1,918 MOT tests in 2025 — 6.4 points above the UK average of 77.5%. The median tested example was 3 years old with 29,874 miles on the clock.

83.9%Pass rate (2025)

1,918MOT tests analysed

29,874 miMedian mileage at test

3 yrsMedian age at test

How the I4 M50 compares

BMW I4 M50

83.9%

UK average (all Class 4 vehicles)

77.5% across 33.1 million tests

BMW average (all models)

83.0%

What fails most on the BMW I4 M50

Across failed and rectified tests in 2025, these vehicle systems produced the most defects on the I4 M50:

#	System	Defects recorded	Share
1	Tyres	420	100.0%

Pre-MOT checklist for I4 M50 owners

Based on the failure profile above, ten minutes with a torch before your test removes the most likely fail items:

Check tread with the 20p test and inspect sidewalls for cracking — tyres close to the limit are the country’s most common advisory

Check the engine before the tester does

A stored fault code with the engine light on is an automatic Major defect. Scan and clear resolved faults before booking.

Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
Autel UK testersAutel professional-grade diagnostic testers

I4 M50 pass rate by registration year

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2022	1,729	83.5%	-7.7 pts	29,820

Check a specific I4 M50 before you buy

Pass rates describe the model; they can’t tell you about the one car you’re looking at. Run its plate through our free MOT history check to see its personal record of failures, advisories and mileage readings.

Other BMW models

3 Series77.7% pass rate · 346,191 tests 11883.0% pass rate · 151,434 tests X185.0% pass rate · 105,826 tests 11678.5% pass rate · 100,371 tests X383.1% pass rate · 88,755 tests 1 Series81.7% pass rate · 77,207 tests X582.4% pass rate · 76,168 tests 5 Series85.7% pass rate · 71,923 tests

FAQs

What is the MOT pass rate for a BMW I4 M50?

In 2025, 83.9% of 1,918 first MOT tests on the BMW I4 M50 were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the I4 M50 fail its MOT on most?

Lighting, tyres and suspension dominate failures across comparable models.

Is the BMW I4 M50 reliable?

MOT pass rate is one lens on durability: at 83.9% it performs above the national average at a median age of 3 years and 29,874 miles. Always check the individual car's history too.

Source: DVSA Anonymised MOT tests and results, 2025 extract (Class 4 initial tests only; retests excluded). Contains public sector information licensed under the Open Government Licence v3.0. Figures rounded to one decimal place.