Used car guide

2020 BMW X7 diesel: common problems and MOT failures

What MOT testers find on the diesel BMW X7 first registered in 2020 (diesel cars only): we looked at the 1,463 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

1,463MOTs of 2020 diesel cars, done in 2023–2025
85%pass first time (all 2020 cars: 87%)
10,000typical miles a year
2.3×the usual rate for suspension arm bushes and joints

What goes wrong more than usual on a 2020 BMW X7 diesel?

Parts flagged at MOT more often on the 2020 BMW X7 diesel than on all cars registered in 2020.

  • Suspension arm bushes and joints2.3× usual
    BMW X7
    2.5% All 2020 cars
    1.1%

    Failed outright at MOT: 0.5%, against 0.2% of all 2020 cars. The rest were advisories or minor defects.

    Rough price £120–£180 (one arm) ClickMechanic

    At the viewing: Listen for clunks over bumps and feel for the steering wandering. Worn arm bushes show as cracked rubber near the wheels.

Better than most

Brake discs: 1.7% here, against 7.4% of all 2020 cars. Brake pads: 3.8% here, against 7.7% of all 2020 cars.

Common 2020 BMW X7 diesel MOT failures and advisories

The share of 2020 BMW X7 diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    24% 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.

  • Brakes
    5% 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.

  • Wipers, windscreen and mirrors
    4% of testsRough price £15–£250

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

  • Seats and seatbelts
    3% of testsRough price £80–£250

    At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.

  • Suspension
    3% 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
    3% of testsRough price £10–£80

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

Questions to ask the seller before buying a 2020 BMW X7 diesel

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

  1. Any recent work on the suspension arm bushes and joints? (Flagged at MOT 2.3× as often on the 2020 BMW X7 diesel as on other cars the same age.)
  2. Can I see the service history and receipts for any big jobs?

Looking at a BMW X7?

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

Other years

Every year of the BMW X7 compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023–Too new for MOT data
2022742Tyres 22%
20211,293Tyres 22%
20191,594Tyres 26%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of BMW X7 cars first registered in 2020. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score