Used car guide

2018 Fiat 500X: common problems and what to check

What gets flagged at MOT on 2018 Fiat 500Xs, from 2,864 tests in 2025, plus known faults and what to look at before you buy one.

2,864MOT tests in 2025
80%pass first time (all 2018 cars: 81%)
6,400typical miles a year
4.6×the usual rate for track rod ends

What stands out

Parts flagged at MOT more often on 2018 Fiat 500Xs than on all cars registered in 2018.

  • Track rod ends4.6× usual
    Fiat 500X
    7.8% All 2018 cars
    1.7%

    Failed outright at MOT: 3.4%, against 0.8% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £50–£150 (one end, plus about £30–£50 if it needs a wheel alignment) ClickMechanic

    At the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.

  • Anti-roll bar link joints10.8× usual
    Fiat 500X
    5.4% All 2018 cars
    0.5%

    Failed outright at MOT: 1.9%, against 0.2% 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.

  • Exhaust system1.9× usual
    Fiat 500X
    2.1% All 2018 cars
    1.1%

    Failed outright at MOT: 0.3%, against 0.2% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £100–£500 (pipe or section) ClickMechanic

    At the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.

By area

The share of 2018 Fiat 500X MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    34% 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.

  • Suspension
    19% 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.

  • Brakes
    18% 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.

  • Lights and electrics
    5% 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
    5% of testsRough price £80–£250

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

  • 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.

Looking at a Fiat 500X?

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Other years

YearMOT testsMost flagged
2022869Tyres 34%
20211,629Tyres 27%
20202,112Tyres 32%
20193,390Tyres 34%
20174,680Tyres 35%
201613,699Tyres 34%
20157,094Suspension 36%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2018 Fiat 500Xs registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score