Used car guide

2018 BMW X5 diesel: common problems and MOT failures

What MOT testers find on the diesel BMW X5 first registered in 2018 (diesel cars only): we looked at the 18,753 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

18,753MOTs of 2018 diesel cars, done in 2023–2025
86%pass first time (all 2018 cars: 83%)
9,200typical miles a year
3.4×the usual rate for ball joint

What goes wrong more than usual on a 2018 BMW X5 diesel?

Parts flagged at MOT more often on the 2018 BMW X5 diesel than on all cars registered in 2018.

  • Ball joint3.4× usual
    BMW X5
    3.4% All 2018 cars
    1%

    Failed outright at MOT: 0.8%, against 0.4% of all 2018 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.

Common 2018 BMW X5 diesel MOT failures and advisories

The share of 2018 BMW X5 diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    26% 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
    10% 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
    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.

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

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

Known faults on the 2018 BMW X5 diesel

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.

Questions to ask the seller before buying a 2018 BMW X5 diesel

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

  1. Has the EGR cooler recall been done?
  2. Any recent work on the ball joint? (Flagged at MOT 3.4× as often on the 2018 BMW X5 diesel as on other cars the same age.)
  3. Can I see the service history and receipts for any big jobs?

Looking at a BMW X5?

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 X5 compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023224Tyres 12%
20228,124Tyres 25%
202113,390Tyres 25%
202014,853Tyres 23%
201925,450Tyres 23%
201718,041Tyres 26%
201618,935Tyres 26%
201520,364Tyres 27%
201415,752Tyres 26%
20139,980Tyres 29%
201211,686Tyres 31%
201111,449Tyres 30%
201010,621Tyres 30%
200911,406Suspension 33%
20089,407Suspension 36%
20079,795Suspension 38%
20069,115Brakes 45%
200514,710Brakes 43%
20048,300Brakes 42%
20035,708Brakes 45%
20023,205Suspension 42%
20011,594Brakes 42%
2000–Too few tests

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 X5 cars first registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score