Mercedes-Benz B-Class MOT Data
Pass rate, failures & statistics from 104,587 tests
80.5%
Good
Reliability Verdict
#418
of 605 models
30.7%
Better than X% of cars
-1.8%
vs National Average
Common MOT Failures
Brakes373,889
Tyres306,880
Suspension267,651
Lamps, reflectors and electrical equipment166,978
Visibility70,019
Noise, emissions and leaks68,263
Body, chassis, structure54,665
Non-component advisories35,581
Number of failure items recorded across all MOT tests
Mileage Distribution
0–30K miles8,147
30–60K miles27,904
60–90K miles33,154
90–120K miles22,392
120K+ miles12,990
How It Compares
| Model | Pass Rate |
|---|---|
| Mercedes-Benz B-Class | 80.5% |
Mercedes-Benz B-Class — MOT Overview
Based on 104,587 MOT tests, the Mercedes-Benz B-Class has an overall pass rate of 80.5%. This is below the national average of 82.3%, making it rank #418 out of 605 models tested.
The most common failure reasons for the Mercedes-Benz B-Class are brakes, tyres, suspension. Brakes accounts for 67.9% of all failure items recorded.
Before your Mercedes-Benz B-Class's MOT, check your lights, tyres (minimum 1.6mm tread depth), brakes, windscreen, and dashboard warning lights. These are the most commonly failed items across all vehicles.
Frequently Asked Questions
What is the Mercedes-Benz B-Class MOT pass rate?▼
The Mercedes-Benz B-Class has an overall MOT pass rate of 80.5% based on 104,587 tests. This puts it at #418 out of 605 car models tested.
What are the most common Mercedes-Benz B-Class MOT failures?▼
The most common failure items are: Brakes (67.9%), Tyres (55.7%), Suspension (48.6%), Lamps, reflectors and electrical equipment (30.3%), Visibility (12.7%).
Is the Mercedes-Benz B-Class reliable?▼
The Mercedes-Benz B-Class is rated "Good" for MOT reliability, with a pass rate of 80.5% — 1.8 percentage points below the national average. MOT pass rate is one indicator of reliability, alongside owner reviews and recall history.
How much does an MOT cost for a Mercedes-Benz B-Class?▼
The maximum MOT fee for a Mercedes-Benz B-Class (Class 4) is £54.85, set by the DVSA. Many garages charge less — you can typically find MOTs for £25–£40. The test itself takes 45–60 minutes.