Used car guide

1997 Mercedes-Benz S-Class: common problems and MOT failures

What MOT testers find on the Mercedes-Benz S-Class first registered in 1997: we looked at the 354 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 354 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

354MOTs of 1997 cars, done in 2023–2025
75%pass first time (all 1997 cars: 65%)
4,000typical miles a year
34%had brakes flagged

Common 1997 Mercedes-Benz S-Class MOT failures and advisories

The share of 1997 Mercedes-Benz S-Class MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Brakes
    34% 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.

  • Suspension
    32% 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.

  • Oil and fluid leaks
    27% 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.

  • Lights and electrics
    23% 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
    19% 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.

  • Wipers, windscreen and mirrors
    13% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

Questions to ask the seller before buying a 1997 Mercedes-Benz S-Class

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%
2021181Tyres 18%
2020775Tyres 21%
20196,969Tyres 19%
20186,956Tyres 18%
20177,118Tyres 22%
20168,055Tyres 23%
20156,498Tyres 23%
20144,858Tyres 22%
20132,948Brakes 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%
20021,143Brakes 33%
20011,009Brakes 34%
2000768Suspension 35%
1999491Brakes 34%
1998501Brakes 32%
1996319Brakes 29%
1995258Suspension 40%
1994149Suspension 32%
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 1997. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score