Used car guide

2021 BMW M440D: common problems and MOT failures

What MOT testers find on the BMW M440D first registered in 2021: we looked at the 342 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 342 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

342MOTs of 2021 cars, done in 2023–2025
87%pass first time (all 2021 cars: 87%)
10,000typical miles a year
20%had tyres flagged

Common 2021 BMW M440D MOT failures and advisories

The share of 2021 BMW M440D MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    20% 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
    3% 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.

  • Wipers, windscreen and mirrors
    2% of testsRough price £15–£250

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

  • Brakes
    2% 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.

  • Seats and seatbelts
    1% of testsRough price £80–£250

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

  • Lights and electrics
    1% 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 2021 BMW M440D

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 BMW M440D?

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Other years

Every year of the BMW M440D compared

YearMOT testsMost flagged
2022521Tyres 16%

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 M440D cars first registered in 2021. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score