Mazda Cx-30: MOT pass rate and reliability data

The Mazda Cx-30 passes its MOT first time more often than the average UK car, by 17.2 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 3,174 individual Mazda Cx-30 tests. Nothing here is an estimate or a survey.

The numbers

What this means if you are buying one

A 93.9% first-time pass rate means roughly 6 in every 100 Mazda Cx-30s presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average Mazda Cx-30 tested had covered 24,803 miles and was built around 2021.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. The Mazda Cx-30 sits 17.2 points above the national average, ranked 142 of 2,005 models. On one bought as repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific Mazda Cx-30 rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see recorded closing bids for damaged Mazda Cx-30s at UK salvage auction.

Most common MOT failures on a Mazda Cx-30

1. A tyre seriously damaged, 2.4% of tests
2. a brake lining or pad worn below 1.5mm, 1.1% of tests
3. Wiper blade missing or obviously not clearing the windscreen, 0.9% of tests
4. Tyre tread depth not in accordance with the requirements, 0.9% of tests
5. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 0.5% of tests
6. Engine MIL illuminated indicating a malfunction, 0.3% of tests
7. Brake disc or drum significantly and obviously worn, 0.3% of tests
8. A tyre cords visible or damaged, 0.2% of tests
9. The aim of a headlamp is not within limits laid down in the requirements, 0.2% of tests
10. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 0.2% of tests

From 3,168 DVSA-tracked Mazda Cx-30 tests, 2024. DVSA testers marked 3.39% of these flagged Mazda Cx-30 defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 5.11% nationally.

Most common MOT advisories on a Mazda Cx-30

An advisory doesn't fail the car - the tester flags it as worth watching, but it still passes. A different list from the failures above: what testers are noting on a Mazda Cx-30 before it actually fails on it.

1. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 10.6% of tests (2.7x the national rate for this advisory), also fails
2. Brake disc or drum excessively weakened, insecure or fractured, 19.1% of tests (1.56x the national rate for this advisory)
3. a brake lining or pad worn below 1.5mm, 11.6% of tests (1.25x the national rate for this advisory), also fails
4. Tyre tread depth not in accordance with the requirements, 20.5% of tests, also fails
5. A tyre seriously damaged, 6.5% of tests, also fails
6. Brake disc or drum significantly and obviously worn, 3.6% of tests, also fails
7. Excessive fluctuation in brake effort through each wheel revolution., 0.4% of tests
8. Brake fluid significantly below minimum mark, 0.4% of tests (4.86x the national rate for this advisory)
9. A wheel badly distorted or wear between wheel and hub at spigot mounting, 0.3% of tests
10. Brake fluid below minimum mark, 0.3% of tests (5.42x the national rate for this advisory)

From 3,168 DVSA-tracked Mazda Cx-30 tests, 2024.

Mazda Cx-30 pass rate by model year

From its 2020 to its 2021 model year, the Mazda Cx-30's first-time pass rate has risen 2.6 points, from 92.6% to 95.2%, the usual pattern: a newer model year is a younger car today, so it fails less. First-time pass rate for each Mazda Cx-30 year:

• 2020 Mazda Cx-30 - 92.6% first-time pass, 1,170 tests
• 2021 Mazda Cx-30 - 95.2% first-time pass, 1,904 tests

Other Mazda models

• Mazda 2 - 73.4%
• Mazda 3 - 73.4%
• Mazda Mx-5 - 77.2%
• Mazda 6 - 74%
• Mazda Cx-5 - 83.1%
• Mazda Cx-3 - 88%
• Mazda 5 - 59%
• Mazda Bongo - 58.1%

Models with a similar pass rate

• Porsche 911 Turbo S S-A - 94%
• Aston Martin Vantage - 93.9%
• Mazda 2 GT Sport Nav Mhev - 93.9%
• Toyota C-Hr Gr Sport Hev Cvt - 93.9%
• Ford Puma St-Line Vignale Mhev - 93.9%
• Audi Q3 Sport 35 Tfsi Mhev S-A - 93.9%

If this car is a salvage or write-off

• What does Cat N mean? Category N explained
• What does Cat S mean? Category S explained
• Cat S vs Cat N: the real differences
• Do you need an HPI check on a car you know is a write-off?

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All 2,005 models ranked by MOT pass rate