Used car guide

2002 Mercedes-Benz S-Class diesel: common problems and MOT failures

What MOT testers find on the diesel Mercedes-Benz S-Class first registered in 2002 (diesel cars only): we looked at the 408 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 408 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

408MOTs of 2002 diesel cars, done in 2023–2025
68%pass first time (all 2002 cars: 58%)
5,400typical miles a year
38%had suspension flagged

Common 2002 Mercedes-Benz S-Class diesel MOT failures and advisories

The share of 2002 Mercedes-Benz S-Class diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    38% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Brakes
    38% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Lights and electrics
    33% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Tyres
    28% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

  • Oil and fluid leaks
    12% of testsRough price £80–£600

    At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

  • Rust and bodywork
    9% of testsRough price £150–£1,000

    At the viewing: Check the sills, wheel arches and underneath for rust, and look along the panels for uneven gaps or paint.

Questions to ask the seller before buying a 2002 Mercedes-Benz S-Class diesel

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

  1. Can I see the service history and receipts for any big jobs?

Looking at a Mercedes-Benz S-Class?

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Other years

Every year of the Mercedes-Benz S-Class compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023513Tyres 14%
2022651Tyres 12%
2021148Tyres 20%
2020775Tyres 21%
20196,969Tyres 19%
20186,939Tyres 18%
20177,115Tyres 22%
20168,055Tyres 23%
20156,498Tyres 23%
20144,832Tyres 22%
20132,929Brakes 26%
20123,634Brakes 31%
20112,761Brakes 30%
20102,549Brakes 31%
20092,529Brakes 37%
20082,858Brakes 39%
20073,814Brakes 40%
20063,082Brakes 37%
20051,569Brakes 37%
20041,856Brakes 37%
20031,931Brakes 35%
20011,009Brakes 34%
2000748Suspension 35%
1999491Brakes 34%
1998501Brakes 32%
1997351Brakes 34%
1996318Brakes 28%
1995257Suspension 40%
1994148Suspension 31%
1993–Too few tests
1991133Brakes 18%
1990128Suspension 27%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Mercedes-Benz S-Class cars first registered in 2002. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score