78.9%
Infiniti Q30 pass rate
Used Infiniti Q30 buying guide
In 2025, Infiniti Q30 cars passed 78.9% of 4,850 initial MOT tests, 6.6 points above the 72.3% UK average. Here is where it fails and what to check before you buy.
Looking at a specific Q30? Check its finance, write-off, stolen, mileage and keeper history. £15, no account needed.
Infiniti Q30 MOT record in brief
Initial MOT tests in 2025, retests excluded.
72.3%
UK average, all cars
+6.6
percentage points above average
Ranked on pass rate the Q30 sits 216th of 575 models in the data. Infiniti as a brand averaged 78.3%, so this model runs 0.6 points ahead of its own brand. Infiniti Q30 cars aged 3 to 5 years passed 91% of MOT tests in 2025; for examples aged 6 to 10 years that fell to 78.6%.
A pass rate is not a reliability score. The full Infiniti Q30 MOT record has the pass rate by age, every common failure and how the Q30 compares with similar cars.
Q30 fuel types
Diesel made up 79.7% of Infiniti Q30 MOT tests in 2025, against 39.3% across all models in this data. Most used examples you look at will be diesels.
Where the Q30 fails its MOT
Where Infiniti Q30 cars that failed their 2025 MOT were marked down, as a share of all recorded failure items.
The specific items testers recorded most often were coil spring fractured or broken (9.5%), linkage ball joint dust cover ball joint dust cover no longer prevents the ingress of dirt (9.4%) and tread depth below requirements of 1.6mm (8.4%). See every common Q30 MOT failure.
These are DVSA failure records across every Infiniti Q30 that failed, not a claim that every Q30 has these problems.
What should you check when buying a used Q30?
The areas above, most common first, and what an MOT tester looks at in each.
1
Suspension
Listen for knocks over bumps, check the car sits level, and look for leaking shock absorbers and split rubber gaiters. 27.3% of Q30 failure items.
2
Lamps, reflectors and electrical equipment
Walk round with every light on: headlights, brake lights, indicators, fog lights and the number plate lamp. Check no warning lights stay on after starting. 19.7% of Q30 failure items.
3
Tyres
Check tread depth across the full width of every tyre (the legal minimum is 1.6mm), and look for cuts, bulges and uneven wear. 19.5% of Q30 failure items.
4
Brakes
Make sure the pedal feels firm, the car stops in a straight line, the handbrake holds on a slope and no brake warning light is showing. 13.8% of Q30 failure items.
5
Visibility
Check the windscreen for chips or cracks in the driver's view, and that the wipers and washers clear it properly. 8.3% of Q30 failure items.
None of this replaces the car's own record. Run a free MOT history check on the registration to see every test, advisory and recorded mileage for that car.
What the MOT record doesn't tell you
Knowing Infiniti Q30 failures cluster around suspension and lamps, reflectors and electrical equipment tells you what to inspect. It tells you nothing about whether the car is safe to buy. An MOT does not show money still owed on the car, a write-off, a theft record or a clocked odometer.
Check the exact Q30 you are looking at. One £15 report, instant results, backed by a £30,000 data guarantee. More on the Infiniti history check.
- Outstanding finance
- Write-off records
- Stolen markers
- Mileage history
- Previous keepers
Other used Infiniti models
The most-tested Infiniti models in 2025, with how their MOT pass rate compares with the Q30.
See all 2 Infiniti models ranked by MOT pass rate.
Used Infiniti Q30 FAQs
Is the Infiniti Q30 reliable?
MOT data does not measure reliability. It records whether a car met the roadworthiness standard on the day of its test. What it does show is a 78.9% first-time pass rate for the Infiniti Q30 across 4,850 tests in 2025, above the 72.3% average for all cars.
Do older Infiniti Q30 cars fail their MOT more often?
Infiniti Q30 cars aged 3 to 5 years passed 91% of MOT tests in 2025; for examples aged 6 to 10 years that fell to 78.6%. On an older example, the car's own MOT history tells you more than the model average.
What should I check before buying a used Infiniti Q30?
On the car itself, start with the areas it most often fails on: suspension, lamps, reflectors and electrical equipment and tyres. Then check the individual car's history: outstanding finance, insurance write-off records, stolen markers, mileage and previous keepers. None of these appear in the MOT record or on the V5C.
How do I check an Infiniti Q30's history?
Enter the registration of the specific car. A Carpeep car history check reports outstanding finance, write-off category, stolen markers, mileage history, previous keepers, MOT and tax status, import and export markers and scrapped status in one £15 report.
MOT figures are aggregated from the DVSA MOT Anonymised data set for 2025 (class 4 initial tests, retests excluded), licensed under the Open Government Licence v3.0. MOT results describe roadworthiness at test, not mechanical reliability.