Know Your MOT
10.9%fail rate

Mercedes-Benz B common MOT failures and failure rate

What a Mercedes-Benz B fails its MOT on most often, from real DVSA test data, and the part that resolves each item.

Based on 430 MOT tests in a recent DVSA sample.

What it fails on, and the fix

Tyres48.9% of failures
Brakes12.8% of failures
Visibility/wipers10.6% of failures
Lamps & electrical6.4% of failures
Seat belts6.4% of failures
Other2.1% of failures
Usually bodywork or inspection, not a single bolt-on part.

About 10.9% of MOT tests recorded on the Mercedes-Benz B in this DVSA sample end in a failure. The pattern is consistent: the same handful of items account for most of them.

Its most common failure is tyres, which makes up 48.9% of the Mercedes-Benz B's failures, followed by tyres, brakes, visibility/wipers, lamps & electrical. Each item below links to the part that resolves it. Confirm the exact fitment against your registration or VIN before buying, and have safety-critical work done by a competent mechanic.

Other models

Mercedes-Benz C MOT failures18.9% failure rateMercedes-Benz A-Class MOT failures18.5% failure rateMercedes-Benz E MOT failures17.7% failure rateFord Fiesta MOT failures22.8% failure rate

Sources: DVSA MOT History API: MOT test results and defect data ยท DVSA MOT testing data for Great Britain