Used car guide

2018 Mazda CX-5 petrol: common problems and MOT failures

What MOT testers find on the petrol Mazda CX-5 first registered in 2018 (petrol cars only): we looked at the 14,150 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

14,150MOTs of 2018 petrol cars, done in 2023–2025
87%pass first time (all 2018 cars: 83%)
7,400typical miles a year
27%had tyres flagged

Common 2018 Mazda CX-5 petrol MOT failures and advisories

The share of 2018 Mazda CX-5 petrol MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    27% 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
    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.

  • Wipers, windscreen and mirrors
    7% of testsRough price £15–£250

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

  • Suspension
    7% 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
    5% of testsRough price £80–£250

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

  • 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.

Known faults on the 2018 Mazda CX-5 petrol

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.

  • Intake valve recall: stalling (built Jan 2012 to June 2018)

    Built Jan 2012 to June 2018

    An intake shutter valve could clog with soot and cause stalling or a no-start. Cars built January 2012 to June 2018 were recalled to clean or replace it and update the software.

    At the viewing: Ask a Mazda dealer to confirm the recall was done.

    Source: Auto Express: used Mazda CX-5 review

Questions to ask the seller before buying a 2018 Mazda CX-5 petrol

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

  1. Has the intake shutter valve recall been done?
  2. Can I see the service history and receipts for any big jobs?

Looking at a Mazda CX-5?

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 Mazda CX-5 compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023387Tyres 13%
20227,527Tyres 17%
202110,974Tyres 20%
202016,951Tyres 21%
201930,027Tyres 25%
201721,526Tyres 26%
201621,054Brakes 27%
201520,955Suspension 30%
201420,220Suspension 38%
201315,269Suspension 46%
20124,237Suspension 46%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Mazda CX-5 cars first registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score