Used car guide

2020 BMW 318d: common problems and MOT failures

What MOT testers find on the BMW 318d first registered in 2020: we looked at the 2,051 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

2,051MOTs of 2020 cars, done in 2023–2025
85%pass first time (all 2020 cars: 87%)
11,000typical miles a year
28%had tyres flagged

Common 2020 BMW 318d MOT failures and advisories

The share of 2020 BMW 318d MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • 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.

  • Brakes
    15% 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
    5% 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.

  • 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.

  • Suspension
    2% 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.

Known faults on the 2020 BMW 318d

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

  • Electrical and infotainment glitches

    All engines

    In What Car?'s survey 13% of petrol and plug-in hybrid cars had a fault, mostly minor electrical, engine and infotainment glitches.

    At the viewing: Test the infotainment and all the electrics, and make sure no warning lights show.

    Source: What Car?: BMW 3 Series (2019 on) reliability

Questions to ask the seller before buying a 2020 BMW 318d

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 318d?

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 318d compared

YearMOT testsMost flagged
2022161Tyres 17%
20211,168Tyres 29%
20193,545Tyres 27%
20183,453Tyres 27%
20174,140Tyres 27%
20161,047Tyres 32%
2015108Tyres 31%

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 318d cars first registered in 2020. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score