2011 Mercedes-Benz B-Class · 12,470 MOT tests
2011 Mercedes-Benz B-Class reliability
2011 Mercedes-Benz B-Classs fail 38.8% of first MOT tests, 11% more MOT fails than the average car its age and mileage, ranking 16 of 16 B-Class years (12,470 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz B-Classs: 26.5%)
- 38.8%
- first-time fail rate (all Mercedes-Benz B-Classs: 26.5%)
- fails than cars of the same age and mileage
- 11% more
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 12
- 76,595
- typical miles at its MOT, aged about 12
- MOT tests, 2022 to 2024
- 12,470
- MOT tests, 2022 to 2024
Year on year
2011 against the years either side
- 2010 cars: 6% more MOT fails than the average car its age (the 2011 car does worse)
- 2012 cars: 14% fewer MOT fails than the average car its age (the 2011 car does worse)
- Weak spot: exhaust, emissions and leaks, 5.2% of tests fail here (47% above cars of the same age and mileage).
- Plates: a 2011 car carries a 60 plate (January–February 2011), or a 11 plate (March–August 2011), or a 61 plate (September–December 2011).
Common problems
What fails on a 2011 Mercedes-Benz B-Class
Fail rate by area
- Lights and electrics18%
- Suspension13.4%
- Brakes11.1%
- Tyres8%
- Windscreen, wipers and mirrors5.5%
- Exhaust, emissions and leaks5.2%
- Body, chassis and structure4%
Average for cars of the same age and mileage
Top failures
Side repeater not working 5.25%
A failed side repeater means other road users cannot see your intended direction change, which is dangerous and must be fixed.
Coil spring fractured or broken 3.97%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Suspension ball joint excessively worn 3.06%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
Dipped beam headlamp not working 3%
A failed dipped beam makes it hard to see and be seen at night, so the lamp needs fixing before driving.
Direction indicator wrong colour 2.67%
An indicator showing the wrong colour may confuse other drivers, so the lens or bulb should be replaced.
Rigid brake pipe excessively corroded 2.66%
Badly corroded brake pipes can leak or fail, which can cause a loss of braking, so repair is urgent.
Common advisories
Brake pipes corroded and greasy (14.32%) · Tyre worn close to legal limit (11.92%) · Brake disc pitted or scored (10.23%) · Tyre slightly damaged or cracking (9.7%) · Brake pads wearing thin (6.09%) · Shock absorber light oil misting (5.2%)
Other years
Every Mercedes-Benz B-Class year
The full picture: Mercedes-Benz B-Class reliability. Before you pay for any Mercedes-Benz B-Class, a Full Check (£9.99) shows finance, stolen and write-off records the MOT can't.
Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2011 Mercedes-Benz B-Class reliable?
2011 Mercedes-Benz B-Classs fail 38.8% of first MOT tests, 11% more MOT fails than the average car its age and mileage, ranking 16 of 16 B-Class years (12,470 DVSA tests, 2022 to 2024).
What fails on a 2011 Mercedes-Benz B-Class MOT?
Most often side repeater not working (5.25% of tests), coil spring fractured or broken (3.97% of tests), suspension ball joint excessively worn (3.06% of tests).
How many miles should a 2011 Mercedes-Benz B-Class have done?
At its MOT aged about 12, a typical 2011 Mercedes-Benz B-Class shows 76,595 miles. Much higher or lower is worth asking about.
What plate is a 2011 car?
A car first registered in 2011 carries a 60 plate (January–February 2011), or a 11 plate (March–August 2011), or a 61 plate (September–December 2011).
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