2005 Mercedes-Benz B-Class · 1,778 MOT tests
2005 Mercedes-Benz B-Class reliability
2005 Mercedes-Benz B-Classs fail 43.4% of first MOT tests, about average for its age and mileage, ranking 10 of 16 B-Class years (1,778 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz B-Classs: 26.5%)
- 43.4%
- first-time fail rate (all Mercedes-Benz B-Classs: 26.5%)
- fails than cars of the same age and mileage
- 1% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 17
- 100,892
- typical miles at its MOT, aged about 17
- MOT tests, 2022 to 2024
- 1,778
- MOT tests, 2022 to 2024
Year on year
2005 against the years either side
- 2006 cars: about average for its age (the 2005 car does better)
- Weak spot: wheels, 1.5% of tests fail here (184% above cars of the same age and mileage).
- Strong point: steering, 64% fewer fails than comparable cars.
- Plates: a 2005 car carries a 54 plate (January–February 2005), or a 05 plate (March–August 2005), or a 55 plate (September–December 2005).
Common problems
What fails on a 2005 Mercedes-Benz B-Class
Fail rate by area
- Lights and electrics18.2%
- Body, chassis and structure15.4%
- Brakes14.5%
- Suspension13.2%
- Windscreen, wipers and mirrors9.1%
- Exhaust, emissions and leaks8.3%
- Tyres6.9%
Average for cars of the same age and mileage
Top failures
CV joint boot split or insecure 10.35%
A split CV boot lets dirt in and grease out, so the joint wears and may need full replacement.
Coil spring fractured or broken 5.91%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Windscreen washer fluid insufficient 3.88%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Parking brake efficiency below minimum 3.54%
The parking brake holds the car less well than required, so it may roll on a slope and needs repair.
Stop lamp not working 3.32%
A failed stop lamp means drivers behind cannot see when you brake, a safety risk that must be fixed.
Suspension ball joint excessively worn 2.98%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
Common advisories
Brake pipes corroded and greasy (17.6%) · Tyre worn close to legal limit (15.8%) · Brake disc pitted or scored (13.22%) · Tyre slightly damaged or cracking (9%) · Brake pads wearing thin (6.52%) · Flexible brake hose slightly deteriorated (5.96%)
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 2005 Mercedes-Benz B-Class reliable?
2005 Mercedes-Benz B-Classs fail 43.4% of first MOT tests, about average for its age and mileage, ranking 10 of 16 B-Class years (1,778 DVSA tests, 2022 to 2024).
What fails on a 2005 Mercedes-Benz B-Class MOT?
Most often cv joint boot split or insecure (10.35% of tests), coil spring fractured or broken (5.91% of tests), windscreen washer fluid insufficient (3.88% of tests).
How many miles should a 2005 Mercedes-Benz B-Class have done?
At its MOT aged about 17, a typical 2005 Mercedes-Benz B-Class shows 100,892 miles. Much higher or lower is worth asking about.
What plate is a 2005 car?
A car first registered in 2005 carries a 54 plate (January–February 2005), or a 05 plate (March–August 2005), or a 55 plate (September–December 2005).
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