Used car guide

2000 Mercedes-Benz ML: common problems and what to check

What gets flagged at MOT on 2000 Mercedes-Benz MLs, from 318 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 318 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

318MOT tests in 2025
57%pass first time (all 2000 cars: 63%)
5,300typical miles a year
1.9×the usual rate for engine oil leaks

What stands out

Parts flagged at MOT more often on 2000 Mercedes-Benz MLs than on all cars registered in 2000.

  • Engine oil leaks1.9× usual
    Mercedes-Benz ML
    30.8% All 2000 cars
    16%

    Failed outright at MOT: 0.3%, against 0.3% of all 2000 cars. The rest were advisories or minor defects.

    Rough price £80–£600 our estimate

    At the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.

  • Headlights2.6× usual
    Mercedes-Benz ML
    19.5% All 2000 cars
    7.4%

    Failed outright at MOT: 6.3%, against 3.2% of all 2000 cars. The rest were advisories or minor defects.

    Rough price £40–£400 our estimate

    At the viewing: Check both headlights on dipped and full beam, and look for cloudy or cracked lenses.

  • Anti-roll bar bushes and joints6.5× usual
    Mercedes-Benz ML
    12.3% All 2000 cars
    1.9%

    Failed outright at MOT: 2.5%, against 0.4% of all 2000 cars. The rest were advisories or minor defects.

    Rough price £100–£280 (pair of drop links) Checkatrade

    At the viewing: Drive slowly over bumps and listen for a knock or rattle from the front. Worn anti-roll bar links are a cheap fix.

  • Ball joint2.8× usual
    Mercedes-Benz ML
    15.4% All 2000 cars
    5.5%

    Failed outright at MOT: 3.8%, against 2% of all 2000 cars. The rest were advisories or minor defects.

    Rough price £60–£150 (one joint) ClickMechanic

    At the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.

  • Brake pads2.6× usual
    Mercedes-Benz ML
    12.6% All 2000 cars
    4.9%

    Failed outright at MOT: 0.9%, against 1.1% of all 2000 cars. The rest were advisories or minor defects.

    Rough price £75–£175 (one axle) ClickMechanic

    At the viewing: Listen for squealing or grinding when braking, and look through the wheel at how much pad is left.

By area

The share of 2000 Mercedes-Benz ML MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Brakes
    49% 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
    47% 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.

  • Lights and electrics
    43% of testsRough price £10–£80

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

  • Oil and fluid leaks
    34% 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.

  • 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.

  • Steering
    19% of testsRough price £100–£450

    At the viewing: On a straight road the steering wheel should sit straight. Feel for play or knocking when turning.

Looking at a Mercedes-Benz ML?

Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.

Other years

YearMOT testsMost flagged
20153,138Tyres 28%
20143,787Tyres 28%
20134,070Tyres 27%
20122,218Tyres 27%
20112,383Tyres 29%
20102,340Brakes 31%
20091,745Brakes 38%
20081,886Brakes 38%
20071,710Brakes 39%
20061,376Suspension 38%
2005771Suspension 49%
20041,006Suspension 55%
2003755Suspension 54%
2002653Suspension 51%
2001377Suspension 46%
1999164Oil and fluid leaks 52%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2000 Mercedes-Benz MLs registered in 2000. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score