1999 Mercedes-Benz C-Class · 4,330 MOT tests
1999 Mercedes-Benz C-Class reliability
1999 Mercedes-Benz C-Classs fail 29.1% of first MOT tests, 25% fewer MOT fails than the average car its age and mileage, ranking 4 of 25 C-Class years (4,330 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz C-Classs: 24%)
- 29.1%
- first-time fail rate (all Mercedes-Benz C-Classs: 24%)
- fails than cars of the same age and mileage
- 25% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 24
- 106,228
- typical miles at its MOT, aged about 24
- MOT tests, 2022 to 2024
- 4,330
- MOT tests, 2022 to 2024
Year on year
1999 against the years either side
- 1998 cars: 21% fewer MOT fails than the average car its age (the 1999 car does better)
- 2000 cars: 15% fewer MOT fails than the average car its age (the 1999 car does better)
- Strong point: steering, 57% fewer fails than comparable cars.
Common problems
What fails on a 1999 Mercedes-Benz C-Class
Fail rate by area
- Lights and electrics14.3%
- Suspension9.5%
- Brakes7.2%
- Body, chassis and structure5.1%
- Windscreen, wipers and mirrors4.6%
- Tyres4.2%
- Exhaust, emissions and leaks3.6%
Average for cars of the same age and mileage
Top failures
Suspension mounting area seriously corroded 2.24%
Corrosion near suspension mountings can seriously weaken the body structure, so an expert inspection is needed.
Position lamp not working 2.17%
A failed position lamp makes the car harder to see in poor light and is illegal, so it must be repaired.
Wiper blade not clearing windscreen 1.89%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
Direction indicator wrong colour 1.73%
An indicator showing the wrong colour may confuse other drivers, so the lens or bulb should be replaced.
Stop lamp not working 1.71%
A failed stop lamp means drivers behind cannot see when you brake, a safety risk that must be fixed.
Tyre tread below 1.6mm 1.55%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Common advisories
Brake pipes corroded and greasy (13.21%) · Tyre worn close to legal limit (9.84%) · Engine oil leak, not excessive (7.3%) · Coil spring showing some corrosion (6.86%) · Tyre slightly damaged or cracking (5.96%) · Wheel bearing slight play (5.36%)
Other years
Every Mercedes-Benz C-Class year
The full picture: Mercedes-Benz C-Class reliability. Before you pay for any Mercedes-Benz C-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 1999 Mercedes-Benz C-Class reliable?
1999 Mercedes-Benz C-Classs fail 29.1% of first MOT tests, 25% fewer MOT fails than the average car its age and mileage, ranking 4 of 25 C-Class years (4,330 DVSA tests, 2022 to 2024).
What fails on a 1999 Mercedes-Benz C-Class MOT?
Most often suspension mounting area seriously corroded (2.24% of tests), position lamp not working (2.17% of tests), wiper blade not clearing windscreen (1.89% of tests).
How many miles should a 1999 Mercedes-Benz C-Class have done?
At its MOT aged about 24, a typical 1999 Mercedes-Benz C-Class shows 106,228 miles. Much higher or lower is worth asking about.
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