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Infiniti Q30 H15 (2016-2019) reliability

At a glance

Infiniti Q30 H15 built around 2018: more fails still not passed 3 days later

Infiniti Q30 H15 models built around 2018 fail an MOT and still haven’t passed 3 days later more often than similar cars the same age. Look closely at the tyres on any car you view.

Looking at an Infiniti Q30 H15?

Enter its number plate to see its full MOT history, risk rating and running costs.

Key figure

5.4% of MOT tests on Infiniti Q30 H15 models built around 2018 failed and still hadn’t passed 3 days later. For similar cars the same age, it was 2.3%.

Most common issue

The most common MOT issue on Infiniti Q30 H15 models built around 2018 involves the tyres.

Infiniti Q30 H15
No reliability rating: not enough tests to rate2016-2019HatchbackDIESEL / PETROL

Based on 5,711 tests of Q30 models registered 2016-2019.

About 1 in 20 Q30 H15 MOTs (5.4%) failed and still hadn't passed 3 days later. That's for cars built around 2018 (7 years old), all fuels combined.

Based on 1,343 tests (DVSA MOT results, 2025). A fail that passed a retest within 3 days, even the same day, isn't counted. Nor is a fail with no later MOT on record.

About 1 in 20 Q30 H15 MOTs (4.6%) found at least one dangerous defect. These are cars built around 2018 (7 years old).

Based on 1,343 tests (DVSA MOT results, 2025). Dangerous is the most serious grade an MOT gives: a direct risk to road safety.

H15 fail rate by age

Below typicalAbove typicalHigh (28% or more)Highest fail rateUK average for cars this age
Age / builtFail rateMOT tests
6 yearsbuilt around 2019
27812.6%
7 yearsbuilt around 2018
1,34318.1%
8 yearsbuilt around 2017
2,83318.1%
9 yearsbuilt around 2016
1,25718.9%

Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs. Highest fail rate at 9 years old.

How the Q30 H15 compares

At each age below, see how the Q30 H15 holds up against other cars the same age. The averages combine all fuel types.

Based on 1,771 tests across 3 Infiniti models, built around 2018 (7 years old).

Below typicalAbove typicalHigh (28% or more)Highest fail rateInfiniti average
Age / builtFail rateMOT tests
6 yearsbuilt around 2019
27812.6%
7 yearsbuilt around 2018
1,34318.1%
8 yearsbuilt around 2017
2,83318.1%
9 yearsbuilt around 2016
1,25718.9%

Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs.

What to check before viewing

The model's most common MOT issues, turned into things you can ask about or look for.

Brake discs

High priority

Ask for the date and mileage of the last disc replacement; visually check for a deep wear lip and rust pitting on each disc.

Brake pads

High priority

Ask when the pads were last replaced and check the warning-light history.

Tyres

Worth checking

Check tread depth across the full width on all four; uneven wear suggests alignment or suspension issues.

Vehicle-specific check

Worth checking

Check the car’s number plate on MOT Wise to see its own MOT history and any recalls for its build years.

Other hatchbacks to compare

Other hatchbacks, with each one's figures taken at the same age as the Q30 H15.

  1. 1

    Lexus CT

    Same body type, tested at the same age

    Fail rate
    10.5%
    Fail, no pass in 3 days
    1.1%
    Dangerous
    4.2%
    Still registered at 10 years
    88.2%

    Lower fail rate: 10.5%, against 18.1% for the Infiniti Q30 H15, both built around 2018.

    3,255 MOT tests on cars built around 2018

  2. 2

    Toyota Prius

    Same body type, tested at the same age

    Fail rate
    11.1%
    Fail, no pass in 3 days
    0.9%
    Dangerous
    3.5%
    Still registered at 10 years
    94.4%

    Lower fail rate: 11.1%, against 18.1% for the Infiniti Q30 H15, both built around 2018.

    5 critical recall campaigns matching this model/build period.

    17,367 MOT tests on cars built around 2018

  3. 3

    Mini

    Same body type, tested at the same age

    Fail rate
    12.3%
    Still registered at 10 years
    95.6%

    Lower fail rate: 12.3%, against 18.1% for the Infiniti Q30 H15, both built around 2018.

    Some figures could not be compared for these two cars. So this comparison uses the fail rate and recalls only.

    50,561 MOT tests on cars built around 2018

  4. 4

    Mazda 2

    Same body type, tested at the same age

    Fail rate
    13%
    Fail, no pass in 3 days
    1.5%
    Dangerous
    4%
    Still registered at 10 years
    95.2%

    Lower fail rate: 13.0%, against 18.1% for the Infiniti Q30 H15, both built around 2018.

    8,722 MOT tests on cars built around 2018

Fail rate
= the share of MOT tests that ended in a fail. Retests count as tests.
Fail, no pass in 3 days
= the share of MOT tests that failed and still hadn't passed 3 days later. A fail that passed a retest within 3 days, even the same day, isn't counted.
Dangerous
= the share of MOT tests where the tester marked a fault as dangerous. It is against the law to drive the car until it is fixed.
Still registered at 10 years
= the share of cars still registered (taxed or declared off the road) 10 years after they were first registered.

Recall context

DVSA's recall list has no recalls filed under the Infiniti Q30 name. For the exact car, check with the maker or GOV.UK's recall checker.

How Q30 H15 cars have aged

How Q30 H15 cars have aged

How fail rates have changed as these cars got older. Each line follows cars first registered in about the same year across several years of MOT data. Not a prediction for any one car.

0%10%20%3456789Age at MOTBuilt around 2019, 3 years old at the time of MOT: 7.7% (156 tests, 2022 data)Built around 2019, 4 years old at the time of MOT: 7.6% (145 tests, 2023 data)Built around 2019, 5 years old at the time of MOT: 11.3% (160 tests, 2024 data)Built around 2019, 6 years old at the time of MOT: 13.1% (153 tests, 2025 data)2019Built around 2018, 3 years old at the time of MOT: 7.3% (259 tests, 2021 data)Built around 2018, 4 years old at the time of MOT: 11.9% (261 tests, 2022 data)Built around 2018, 5 years old at the time of MOT: 12.5% (257 tests, 2023 data)Built around 2018, 6 years old at the time of MOT: 10.4% (241 tests, 2024 data)Built around 2018, 7 years old at the time of MOT: 13.0% (239 tests, 2025 data)2018Built around 2017, 4 years old at the time of MOT: 8.5% (1,977 tests, 2021 data)Built around 2017, 5 years old at the time of MOT: 11.5% (1,971 tests, 2022 data)Built around 2017, 6 years old at the time of MOT: 14.0% (1,951 tests, 2023 data)Built around 2017, 7 years old at the time of MOT: 16.0% (1,979 tests, 2024 data)Built around 2017, 8 years old at the time of MOT: 18.3% (1,965 tests, 2025 data)2017Built around 2016, 5 years old at the time of MOT: 11.1% (1,304 tests, 2021 data)Built around 2016, 6 years old at the time of MOT: 11.5% (1,250 tests, 2022 data)Built around 2016, 7 years old at the time of MOT: 15.6% (1,255 tests, 2023 data)Built around 2016, 8 years old at the time of MOT: 15.3% (1,219 tests, 2024 data)Built around 2016, 9 years old at the time of MOT: 18.9% (1,257 tests, 2025 data)2016
First registered around 2019First registered around 2018First registered around 2017First registered around 2016
H15 variants compared

Q30 H15 variants built around 2018

The fail rate for each Q30 H15 variant, grouped by fuel. Each row counts fails per MOT test, the same way as the main fail rate chart.

Diesel

  • Q3018.8%1,019 tests

Petrol

  • Q3015.7%324 tests
All generations of this modelEnough data

Most common issues on Infiniti Q30 models of this age

This list covers every Infiniti Q30 built around 2018, whichever generation it is. We don't have a defect list for the H15 on its own.

Most common advisories and fails

In order of the share of MOT tests that recorded each one

  1. 1
    Advisory

    Tyre worn close to the legal limit or worn on the edge

    18.5%
    Advisory: 340Fail: 41 (11% of the times it was found)
  2. 2
    Advisory

    Tyre slightly damaged, cracking or perishing

    16.4%
    Advisory: 328Fail: 22 (6% of the times it was found)
  3. 3
    Advisory

    Brake disc worn, pitted or scored, but not seriously weakened

    12.5%
    Advisory: 240Fail: 1 (0% of the times it was found)
  4. 4
    Advisory

    Brake pads wearing thin

    10.1%
    Advisory: 145Fail: 18 (11% of the times it was found)
  5. 5
    Advisory

    Brake disc worn, but not excessively

    5.5%
    Advisory: 95Fail: 12 (11% of the times it was found)

Based on 1,343 tests

Looking at an Infiniti Q30 H15?

Enter its number plate to see its full MOT history, risk rating and running costs.

Frequently asked questions

Built around 2018 (7 years old), the Infiniti Q30 H15 (2016-2019) fails MOTs at about the rate typical for this age. This is based on 1,343 7-year-old MOT tests from DVSA data. Each retest counts as a test.

*The build year is worked out from the date a car was first used on UK roads. For most cars this matches when it was registered, but imports may differ by a few months.

Data sourced from DVSA MOT History API. From 5,711 MOT tests on Infiniti Q30 models first registered between 2016-2019. These figures are a guide, not a guarantee.