Used car guide

2020 Jeep Grand Cherokee diesel: common problems and MOT failures

What MOT testers find on the diesel Jeep Grand Cherokee first registered in 2020 (diesel cars only): we looked at the 163 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 163 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

163MOTs of 2020 diesel cars, done in 2023–2025
84%pass first time (all 2020 cars: 87%)
6,200typical miles a year
2.6×the usual rate for brake discs

What goes wrong more than usual on a 2020 Jeep Grand Cherokee diesel?

Parts flagged at MOT more often on the 2020 Jeep Grand Cherokee diesel than on all cars registered in 2020.

  • Brake discs2.6× usual
    Jeep Grand Cherokee
    19% All 2020 cars
    7.3%

    Failed outright at MOT: 2.5%, against 0.4% of all 2020 cars. The rest were advisories or minor defects.

    Rough price £150–£350 our estimate

    At the viewing: Look through the wheel at the brake disc: a deep lip at the edge or heavy scoring means they're worn. Feel for judder when braking.

Common 2020 Jeep Grand Cherokee diesel MOT failures and advisories

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

  • Brakes
    23% 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.

  • Tyres
    15% 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.

  • Lights and electrics
    7% of testsRough price £10–£80

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

  • 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.

  • 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.

  • Seats and seatbelts
    2% of testsRough price £80–£250

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

Questions to ask the seller before buying a 2020 Jeep Grand Cherokee 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 brake discs? (Flagged at MOT 2.6× as often on the 2020 Jeep Grand Cherokee diesel as on other cars the same age.)
  2. Can I see the service history and receipts for any big jobs?

Looking at a Jeep Grand Cherokee?

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 Jeep Grand Cherokee 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
2019772Brakes 18%
20181,196Brakes 22%
20172,561Brakes 23%
20163,072Brakes 25%
20154,137Brakes 27%
20144,331Brakes 27%
20132,951Brakes 25%
20121,527Brakes 24%
2011619Suspension 26%
2009141Suspension 47%
2008588Suspension 47%
2007634Suspension 50%
20061,755Suspension 46%
20051,454Suspension 51%
2004740Suspension 55%
2003446Suspension 59%
2002660Suspension 52%
2001544Suspension 45%
2000402Suspension 46%
1999325Suspension 50%
1998188Brakes 38%
1997119Suspension 44%
1996–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 Jeep Grand Cherokee cars first registered in 2020. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score