2020 Mazda CX-30 hybrid: common problems and MOT failures
What MOT testers find on the hybrid Mazda CX-30 first registered in 2020 (hybrid cars only): we looked at the 144 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.
Small sample: there were only 144 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.
Common 2020 Mazda CX-30 hybrid MOT failures and advisories
The share of 2020 Mazda CX-30 hybrid MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Brakes17% 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.
- Tyres16% 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.
- Suspension13% 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 mirrors6% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
- Lights and electrics1% 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 seatbelts1% of testsRough price £80–£250
At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.
Known faults on the 2020 Mazda CX-30 hybrid
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.
- All engines
Battery and electrical faults
Battery problems are the biggest complaint in What Car?'s survey, followed by other electrical faults, infotainment freezes and unexpected warning lights.
At the viewing: Make sure it starts easily and no warning lights show, and test the infotainment and phone connection.
Questions to ask the seller before buying a 2020 Mazda CX-30 hybrid
Ask before you travel to see it. A seller who knows the car will have answers, and receipts.
- Can I see the service history and receipts for any big jobs?
Looking at a Mazda CX-30?
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-30 compared
| Year | MOT tests | Most flagged |
|---|---|---|
| 2026 | – | Too new for MOT data |
| 2025 | – | Too new for MOT data |
| 2024 | – | Too new for MOT data |
| 2023 | 253 | Tyres 8% |
| 2022 | 6,466 | Tyres 18% |
| 2021 | 15,890 | Brakes 20% |
| 2019 | 647 | Tyres 23% |
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-30 cars first registered in 2020. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score