Mazda CX-30 Reliability: Common Problems and Years to Avoid
Typical MOT issues to check on the Mazda CX-30, with rough repair costs, and how each model year's MOT pass rate compares with other cars of the same age. Based on 5,421 MOT tests across 3 model years (DVSA data for tests carried out in 2024, retests included).
Segment: family car | Fuel: Petrol
93%
Mazda CX-30 pass rate
81%
Mazda average
82%
All-model average
The Mazda CX-30 has an average MOT pass rate of 93%, which is 12 points above the Mazda average and 11 points above the average across all models in our data.
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Common MOT Issues to Check on the Mazda CX-30
Typical issues for a car of this age and type, estimated from its age, fuel type and engine size (not counted from its MOT records), with rough repair costs
Brakes
Moderate likelihood£80 - £450
Typical repair cost
Common advisories:
Brake discs worn, brake pads thin, handbrake adjustment needed
Failure points:
Brake disc excessively worn, brake pipe corroded, brake efficiency below minimum
Suspension
Moderate likelihood£150 - £600
Typical repair cost
Common advisories:
Suspension arm bush worn, shock absorber misting, spring corroded
Failure points:
Coil spring broken, ball joint excessive play, shock absorber leaking
Lights
Moderate likelihood£15 - £200
Typical repair cost
Common advisories:
Headlamp aim slightly out, lens deteriorated
Failure points:
Headlamp not working, brake light not functioning, indicator failure
Tyres
Moderate likelihood£50 - £300
Typical repair cost
Common advisories:
Tyre approaching legal limit, slight damage to sidewall
Failure points:
Tyre below minimum tread depth, tyre has a cut exposing ply
Exhaust & Emissions
Moderate likelihood£80 - £800
Typical repair cost
Common advisories:
Exhaust mounting corroded, slight exhaust leak
Failure points:
Exhaust emissions exceed limits, catalytic converter efficiency low, DPF warning
Steering
Lower likelihood£100 - £500
Typical repair cost
Common advisories:
Track rod end has slight play, steering rack boot deteriorated
Failure points:
Steering rack leaking, track rod ball joint worn beyond limits
Body & Structure
Lower likelihood£200 - £1200
Typical repair cost
Common advisories:
Surface corrosion on subframe, slight body panel damage
Failure points:
Structural corrosion, body mounting corroded through, chassis weakness
Windscreen & Wipers
Lower likelihood£10 - £350
Typical repair cost
Common advisories:
Minor windscreen chip, wiper blade deteriorated
Failure points:
Windscreen crack in swept area, wiper does not clear windscreen
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Mazda CX-30 Years to Avoid
Every car in the 2024 MOT data was tested at the same age as the other cars first registered that year, so each CX-30 year is compared with all cars from the same year. Years with 1,000+ tests that were at least three years old are included.
Failed more often than cars their age
No year passed 3 or more points less often than other cars of the same age.
Passed more often than cars their age
No year passed 3 or more points more often than other cars of the same age.
A lower pass rate means that year failed its MOT more often in 2024; it does not mean every car from that year is bad. Old cars still on the road are often the best-kept ones, which can lift the pass rates of the oldest years. How a car has been looked after matters more, so check the MOT history of the car you are looking at.
Mazda CX-30 Reliability by Year
MOT pass rate for each model year, from DVSA data for tests carried out in 2024 (retests included). Newer cars usually pass more often simply because they are younger. All Cars is the pass rate of every car first registered that year, with the gap in points. Highest and lowest are marked among years with 100+ tests that were at least three years old when tested. Fuel and engine size are a guide only.
Mazda CX-30 Running Costs
Want to know the full annual running costs for the Mazda CX-30? Including fuel, road tax, the MOT and predicted repairs based on MOT pass rates, plus an estimated insurance group.
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Mazda CX-30 FAQ
What are the most common Mazda CX-30 problems?
Most of the Mazda CX-30 cars in our data are fairly new, so no issue stands out; the list on this page shows the usual things to check on cars like this, with rough repair costs. Across 5,421 MOT tests (DVSA MOT data for tests in 2024, retests included), 93% ended in a pass.
Is the Mazda CX-30 reliable?
The Mazda CX-30 has an average MOT pass rate of 93%, from 5,421 MOT tests (DVSA MOT data for tests in 2024, retests included). Comparing each model year with all cars first registered the same year, so that age is allowed for, it passed within 1 point of other cars of the same age, so about average for its age.
Which Mazda CX-30 years should I avoid?
No Mazda CX-30 year with 1,000+ tests passed 3 or more points less often than all cars first registered the same year (DVSA MOT data for tests in 2024, retests included). A year's pass rate does not tell you about one car, so check the MOT history of the car you are buying.
How much does it cost to fix common Mazda CX-30 faults?
As a rough guide, brake work on a Mazda CX-30 typically costs £80-£450 and suspension repairs £150-£600, while exhaust and emissions fixes can cost £80-£800. Lighting and wiper fixes are usually under £200.
Check a Specific Mazda CX-30
Enter any reg plate to see the exact MOT history, defects found, health score, and running cost estimate for that specific car.
Other Mazda Models
Common problems pages for other Mazda models