Mazda
2,057 MOT tests analysed. sits above the UK fleet average — here's where CX 30 GT Sport Tech Mhevs pass, fail, and end up on the retest sheet.
That's 14.9 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
92.4%
Pass-after-fix
2.2%
Fail
5.0%
Avg miles
24,361
Pass + Pass-after-fix + Fail = 100%
Petrol cars first registered from January 2006 meet Euro 4 — compliant in London ULEZ, Birmingham CAZ, Bristol CAZ, and Glasgow LEZ.
Performance by cohort
2 year bands · 2,057 tests
Pass rate climbs 2.1 points across the cohorts — newer CX 30 GT Sport Tech Mhev examples clear the test more reliably than the early cars.
Pass
91.3%
Fail
5.6%
PRS
2.3%
Avg mileage at test
27,189 mi
Pass
93.4%
Fail
4.4%
PRS
2.1%
Avg mileage at test
21,854 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 616 MOT tests, the Cx-30 Gt Sport Tech Mhev returns 94.0% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is a seriously damaged tyre. A defective wiper blade and windscreen damage round out the top three. Average tested mileage sits at 20,414, which is the lens to read those failure rankings through. If you own one and the next test is close, the ranked list below is a sensible pre-test checklist.
ABI Insurance Group
Around the UK fleet average for insurance cost. Lower groups cost less to insure; UK fleet average is around Group 22.
Source: ABI Group Rating Panel · administered by Thatcham Research · groups cover standard variants; performance trims may sit higher. Browse all insurance groups →
18–26
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Wiper blade defective
22 occurrences · 1.1% of tests
A tyre seriously damaged
19 occurrences · 0.9% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
15 occurrences · 0.7% of tests
Wiper blade missing or obviously not clearing the windscreen
14 occurrences · 0.7% of tests
Engine MIL illuminated indicating a malfunction
12 occurrences · 0.6% of tests
a brake lining or pad worn below 1.5mm
12 occurrences · 0.6% of tests
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
9 occurrences · 0.4% of tests
A tyre seriously damaged
5 occurrences · 0.2% of tests
Brake disc or drum excessively weakened, insecure or fractured
5 occurrences · 0.2% of tests
Obligatory mirror or device slightly damaged or loose
4 occurrences · 0.2% of tests
Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.
Worst-case fix budget · top 2 failures
£40–£90
If every one of this CX 30 GT Sport Tech Mhev's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →
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Build your own retest budget.
Year-band analysis
First-time MOT pass rate split by registration band. A 2.1-point gap between bands is modest — the year you buy Mazda CX 30 GT Sport Tech Mhev makes a small but real difference to MOT outcomes.
Best band to buy
93.4%
2021+ registration
the 2021-on band climbs to 93.4% — a 2.1-point improvement. Tests in this band average 21,854 miles — roughly 5K miles fewer on the clock than the older band. Failures here are mostly wear items: has a cut in excess of the…, blade defective — the structural issues that drag down older examples don't appear in the top-10 for this band. Post-2020 examples are early in their MOT life and generally show the cleanest records.
Band to be cautious about
91.3%
2018–2020 registration
On the 2018–2020 band, the data shows a 91.3% pass rate against a fleet average of 93.4% on the newer band. The main culprits logged at test: blade defective, inoperative or indicates a malfunction, and has a cut in excess of the…. Average mileage on test for this band is 27,189 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2021+ (93.4% first-time pass). Worst band to avoid: 2018-2020 (91.3% pass). That's a 2.1-point spread across 971 older tests and 1,086 newer ones — year of build makes a material difference on this model.
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Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.
If you own a CX 30 GT Sport Tech Mhev and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.
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