Used car guide

2015 BMW 640i: common problems and MOT failures

What MOT testers find on the BMW 640i first registered in 2015: we looked at the 497 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 497 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

497MOTs of 2015 cars, done in 2023–2025
86%pass first time (all 2015 cars: 74%)
6,200typical miles a year
23%had tyres flagged

Common 2015 BMW 640i MOT failures and advisories

The share of 2015 BMW 640i MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    23% 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
    11% 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
    6% 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.

  • 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.

  • Lights and electrics
    4% 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
    2% 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.

Questions to ask the seller before buying a 2015 BMW 640i

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 640i?

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 640i compared

YearMOT testsMost flagged
2018110Tyres 18%
2017417Tyres 23%
2016331Tyres 24%
2014223Tyres 24%
2013154Tyres 22%
2012224Tyres 17%
2011786Tyres 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 BMW 640i cars first registered in 2015. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score