Used car guide

2018 Vauxhall Mokka: common problems and MOT failures

What MOT testers find on the Vauxhall Mokka first registered in 2018: we looked at the 31,817 MOTs these cars had during 2025. Plus known faults and what to look at before you buy one.

31,817MOTs of 2018 cars, done in 2025
71%pass first time (all 2018 cars: 81%)
6,500typical miles a year
16.6×the usual rate for ball joint dust cover

What goes wrong more than usual on a 2018 Vauxhall Mokka?

Parts flagged at MOT more often on the 2018 Vauxhall Mokka than on all cars registered in 2018.

  • Ball joint dust cover16.6× usual
    Vauxhall Mokka
    13.3% All 2018 cars
    0.8%

    Failed outright at MOT: 8.1%, against 0.3% 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 system7.6× usual
    Vauxhall Mokka
    8.4% All 2018 cars
    1.1%

    Failed outright at MOT: 1.6%, 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.

  • Coil springs3.7× usual
    Vauxhall Mokka
    6.3% All 2018 cars
    1.7%

    Failed outright at MOT: 6%, against 1.3% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £175–£400 (pair, one axle) ClickMechanic

    At the viewing: Look behind each wheel for a snapped spring coil, and listen for a clunk or twang when turning the wheel lock to lock with the car stopped.

  • Engine oil leaks4.1× usual
    Vauxhall Mokka
    5.7% All 2018 cars
    1.4%

    Failed outright at MOT: 0.1%, against 0% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £80–£600 our estimate

    At the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.

  • Wipers2.4× usual
    Vauxhall Mokka
    6.1% All 2018 cars
    2.5%

    Failed outright at MOT: 3.8%, against 1.5% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £15–£60 our estimate

    At the viewing: Test the wipers and washers on every speed.

Common 2018 Vauxhall Mokka MOT failures and advisories

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

  • Tyres
    29% 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
    23% 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
    20% 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
    10% of testsRough price £10–£80

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

  • Exhaust and emissions
    9% of testsRough price £100–£1,200

    At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.

  • Wipers, windscreen and mirrors
    8% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

Known faults on the 2018 Vauxhall Mokka

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.

  • Three safety recalls

    All engines

    The Mokka has been recalled for a steering wheel bolt that can work loose, a seatbelt pre-tensioner fault and an electrical fault that could cause a fire.

    At the viewing: Ask a Vauxhall dealer to check the VIN, and check for warning lights or any burning smell.

    Source: What Car?: used Vauxhall Mokka X advice

  • Blocked DPF (diesel)

    Diesel

    Diesel Mokkas used mainly for short trips can block their particulate filter.

    At the viewing: Look for a DPF warning light and ask how the car has been used.

    If it needs doing: DPF clean or regeneration, about £160–£500. ClickMechanic

    Source: What Car?: used Vauxhall Mokka X advice

Questions to ask the seller before buying a 2018 Vauxhall Mokka

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

  1. Has all the recall work been done?
  2. Has it done regular longer runs, and has the DPF been cleaned?
  3. Any recent work on the ball joint dust cover? (Flagged at MOT 16.6× as often on the 2018 Vauxhall Mokka as on other cars the same age.)
  4. Any recent work on the exhaust system? (Flagged at MOT 7.6× as often on the 2018 Vauxhall Mokka as on other cars the same age.)
  5. Any recent work on the coil springs? (Flagged at MOT 3.7× as often on the 2018 Vauxhall Mokka as on other cars the same age.)
  6. Can I see the service history and receipts for any big jobs?

Looking at a Vauxhall Mokka?

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 Vauxhall Mokka compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
20231,399Tyres 17%
202222,705Tyres 21%
202112,971Tyres 21%
201922,318Tyres 29%
201736,786Tyres 29%
201639,841Suspension 33%
201542,448Suspension 37%
201431,071Suspension 41%
201312,191Suspension 46%
2012754Suspension 46%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2025, counting the MOTs of Vauxhall Mokka cars first registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score