Buying Report · £14.99
Tools

Common problems by part

Infiniti Q50 exhaust, emissions and leaks problems

DVSA MOT tests 2022–2025 · 2,281 MOT tests · Updated

At 8 years, 1.8 in 100 MOT tests of the Infiniti Q50 failed on exhaust, emissions and leaks, against 2.1 for all class 4 vehicles the same age (all test years; 2,281 MOT tests) [1].

Buying Report £14.99 incl. VAT · one car · no subscription · Not a mechanical inspection.

  • Against all class 4 vehicles the same age: about average for all class 4 vehicles the same age (all test years), 42 MOT tests with a fail
  • By age: seen at 5 ages from 6 to 10 years, 8,734 MOT tests
  • MOT tests at 8 years: 2,281 for the Infiniti Q50

Figures are for the model as a whole, not for one car.

What the MOT tests show

What we know

1.8 fails per 100 MOT tests at 8 years, against 2.1 for all class 4 vehicles tested at 8 (all test years). That is about average.

Why it matters

An exhaust, emissions and leaks fail stops the car passing until it is fixed.

What to check

Start the car from cold and look for smoke at the exhaust, listen for blowing joints, and look under the engine and gearbox for fresh oil or fluid drips.

Infiniti Q50 exhaust, emissions and leaks fails by age

Infiniti Q50 exhaust, emissions and leaks fails per 100 MOT tests by ageSolid line: the Infiniti Q50. Dashed line: all cars the same age. The table below lists every value.01236 years: 1.2 per 100 (all cars 1.3), 1,389 MOT tests67 years: 1.6 per 100 (all cars 1.7), 2,117 MOT tests78 years: 1.8 per 100 (all cars 2.1), 2,281 MOT tests89 years: 1.5 per 100 (all cars 2.4), 1,790 MOT tests910 years: 1.2 per 100 (all cars 2.8), 1,157 MOT tests10
Fails per 100 MOT tests by age, all first-use years pooled. Infiniti Q50 All class 4 vehicles the same age
AgeMOT testsFails per 100All class 4 vehicles the same age
61,3891.21.3
72,1171.61.7
82,2811.82.1
91,7901.52.4
101,1571.22.8

All first-use years of the Infiniti Q50 pooled at each age, against all class 4 vehicles at that age over all 2022–2025 test years.

What fails in the exhaust, emissions and leaks at 8 years

Advisories (not fails)

Buying an Infiniti Q50? Check that exact car before the viewing.

Buying Report £14.99 incl. VAT · one car · no subscription · Not a mechanical inspection.

  • Model risks for this year and fuel
  • What similar cars did at their next MOT
  • Repairs ahead
  • Viewing checklist

See a sample report

How to check on a test drive

Start the car from cold and look for smoke at the exhaust, listen for blowing joints, and look under the engine and gearbox for fresh oil or fluid drips.

The most common advisory here in MOT records: Engine oil leaks: leak, but not excessive.

Check one Infiniti Q50, not the average

The figures here describe Infiniti Q50 cars as a group. These free tools answer for one car. Each line says what the tool reads.

Other Infiniti Q50 problems

Exhaust, emissions and leaks on rival models

Questions people ask

Does the Infiniti Q50 have more exhaust, emissions and leaks problems than other cars?

1.8 in 100 MOT tests at 8 years, against 2.1 for all class 4 vehicles the same age: about average by our test (all test years; 2,281 MOT tests).

How common are Infiniti Q50 exhaust, emissions and leaks problems?

1.8 in 100 MOT tests at 8 years failed on exhaust, emissions and leaks, against 2.1 for all class 4 vehicles the same age (all test years; 2,281 MOT tests).

Sources

  1. Driver and Vehicle Standards Agency, Anonymised MOT tests and results, 2022 to 2025. DVSA MOT data, Open Government Licence v3.0, 8,734 MOT tests. Accessed 7 Oct 2026.

Parts: against all class 4 vehicles at the same age, all 2022–2025 test years pooled, not adjusted for mileage. Breakdowns and non-MOT faults are not in this data. How we compare