Infiniti Q30: MOT pass rate and reliability data

The Infiniti Q30 passes its MOT first time more often than the average UK car, by 8.5 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 4,900 individual Infiniti Q30 tests. Nothing here is an estimate or a survey.

The numbers

What this means if you are buying one

A 85.2% first-time pass rate means roughly 15 in every 100 Infiniti Q30s 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 Infiniti Q30 tested had covered 59,240 miles and was built around 2017.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. The Infiniti Q30 sits 8.5 points above the national average, ranked 1,230 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 Infiniti Q30 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 Infiniti Q30s at UK salvage auction.

Most common MOT failures on a Infiniti Q30

1. A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED, 1.8% of tests (1.49x the national rate for this defect)
2. An SRS malfunction indicator lamp (MIL) indicates a system malfunction, 0.6% of tests (1.48x the national rate for this defect)
3. A suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 2.4% of tests (1.32x the national rate for this defect)
4. Brake disc or drum significantly and obviously worn, 1% of tests (1.26x the national rate for this defect)
5. Tyre tread depth not in accordance with the requirements, 3.2% of tests
6. A spring or spring component fractured or seriously weakened, 2.4% of tests
7. a brake lining or pad worn below 1.5mm, 2% of tests
8. A tyre seriously damaged, 2% of tests
9. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 1% of tests
10. Engine MIL illuminated indicating a malfunction, 1% of tests

From 4,889 DVSA-tracked Infiniti Q30 tests, 2024. DVSA testers marked 6.31% of these flagged Infiniti Q30 defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 5.11% nationally.

Most common MOT advisories on a Infiniti Q30

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 Infiniti Q30 before it actually fails on it.

1. Brake disc or drum significantly and obviously worn, 5.9% of tests (1.85x the national rate for this advisory), also fails
2. A tyre seriously damaged, 25.2% of tests (1.63x the national rate for this advisory), also fails
3. Tyre tread depth not in accordance with the requirements, 25.5% of tests, also fails
4. Brake disc or drum excessively weakened, insecure or fractured, 13.1% of tests
5. a brake lining or pad worn below 1.5mm, 10.2% of tests, also fails
6. A suspension pin, bush or joint excessively worn, 2.4% of tests
7. Number plate inscription missing or illegible, 1.2% of tests
8. Brake pipe damaged or excessively corroded, 0.9% of tests
9. Excessive fluctuation in brake effort through each wheel revolution., 0.9% of tests
10. A spring or spring component fractured or seriously weakened, 0.8% of tests, also fails

From 4,889 DVSA-tracked Infiniti Q30 tests, 2024.

Infiniti Q30 pass rate by model year

From its 2016 to its 2018 model year, the Infiniti Q30's first-time pass rate has risen 7 points, from 84.6% to 91.6%, the usual pattern: a newer model year is a younger car today, so it fails less. First-time pass rate for each Infiniti Q30 year:

• 2016 Infiniti Q30 - 84.6% first-time pass, 1,777 tests
• 2017 Infiniti Q30 - 85.2% first-time pass, 2,575 tests
• 2018 Infiniti Q30 - 91.6% first-time pass, 309 tests
• 2019 Infiniti Q30 - 89.3% first-time pass, 206 tests

Infiniti Q30 by fuel type

The Infiniti Q30's two most-tested fuel types split by 4.9 points: diesel passes first time 84.6% of the time (3,897 tests) against 89.5% for petrol (982 tests).

• Diesel Infiniti Q30 - 84.6% first-time pass, 3,897 tests
• Petrol Infiniti Q30 - 89.5% first-time pass, 982 tests

Other Infiniti models

• Infiniti Q50 - 80.3%

Models with a similar pass rate

• Land Rover Discovery Sport R-Dyn Hse A - 85.3%
• BMW X1 - 85.2%
• Mercedes-Benz Gla - 85.2%
• Land Rover Discovery Sport S D Mhev Auto - 85.2%
• Vauxhall Crossland - 85.1%
• MINI Clubman - 85.1%

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