IsItAGoodCar

Common Problems with the
2015–2018 Infiniti Q30 / QX30

We've identified 3 known issues that can affect the 2015–2018 Infiniti Q30 / QX30. 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
0
Moderate
1
Minor

The 2015–2018 period has 1 more issue than the Infiniti Q30 / QX30 average across all year periods.

All Known Issues

DCT Gearbox Sensor and Software Issues

SeriousGearbox & Transmission

The Mercedes-sourced 7-speed dual-clutch transmission can suffer from jerky shifts or failing speed sensors, which can put the car into limp mode.

Estimated cost: £500–£2,500Affects: 2015–2018Often appears around: 40,000+ miles

Typical symptoms

  • •Jerky gear changes
  • •Hesitation when pulling away
  • •Transmission warning light
  • •Limp mode

What to inspect before you buy

  • ✓Ensure the gearbox shifts cleanly through all gears under both light and heavy acceleration
  • ✓Check service history for transmission fluid changes

OM651 Diesel Timing Chain Tensioner

SeriousEngine

The 2.1-litre diesel engine (badged as 2.2d) is known for timing chain tensioner wear. If left unaddressed, the chain can stretch or snap, leading to catastrophic engine failure.

Most affected: 2.2d

Estimated cost: £800–£1,500Affects: 2015–2020Often appears around: 70,000+ miles

Typical symptoms

  • •Rattling sound from the engine on cold start
  • •Check engine light
  • •Rough idling

What to inspect before you buy

  • ✓Listen carefully for a metallic "clacking" sound for the first few seconds after a cold start

Suspension Component Wear

MinorSuspension & Chassis

Shared with the GLA, the front suspension bushes and drop links can wear prematurely, leading to knocks and vague steering.

Estimated cost: £150–£350Affects: 2015–2020Often appears around: 30,000+ miles

Typical symptoms

  • •Knocking noise over speed bumps
  • •Uneven tyre wear
  • •Slight pulling to one side

What to inspect before you buy

  • ✓Listen for knocks during the test drive
  • ✓Inspect front tyres for uneven wear patterns

Buying Tips for the 2015 Infiniti Q30 / QX30

  • ✓Pay close attention to the 7-speed DCT gearbox; it should shift smoothly. Any hesitation or "clunking" could indicate a failing sensor or actuator.
  • ✓Check the ride quality; models on larger 19-inch wheels can be quite harsh on UK roads.
  • ✓Verify the history of the 2.1L diesel (2.2d); it requires specific oil and timely maintenance to avoid timing chain issues.
2019–2020 Infiniti Q30 / QX30

Browse 2015–2018 Infiniti Q30 / QX30 in our Directory

View MOT history, registration data, and reliability scores for 2015–2018 Infiniti Q30 / QX30 vehicles.

View 2015–2018 Directory

Other Infiniti Q30 / QX30 Year Periods

2015–20182019–2020

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