IsItAGoodCar
Reliability Guide

Common Problems with the
2017 Infiniti Q50

The 2017 facelift was a significant update for the Q50, introducing new 3.0-litre twin-turbo V6 engines (in 300bhp and 400bhp Red Sport forms) replacing the old 3.7-litre V6. The exterior received subtle design tweaks, while the interior gained an upgraded Bose Performance Series sound system and new Designer Pack options. The DAS steering system was refined with improved calibration.

What changed for 2017

  • •New 3.0-litre twin-turbo V6 engines (300bhp and 400bhp Red Sport)
  • •Old 3.7-litre V6 discontinued
  • •Bose Performance Series 16-speaker sound system
  • •Designer Pack with quilted leather and open-pore wood
  • •Refined DAS steering calibration

Common MOT watch-outs

  • !Check for brake pedal feel; master cylinder issues were reported
  • !Verify DAS steering tracks straight on a flat road
2
Known Issues
1
Serious
1
Moderate
0
Minor

All Known Issues

2.2d Turbo and Injector Issues

SeriousEngine

The Mercedes-sourced 2.1L diesel (2.2d) can suffer from turbocharger actuator failure and piezo-injector leaks as it ages.

Est. Repair Cost: £600–£1,800
Warning Signs:

Loss of power, Black smoke from exhaust, Diesel smell in the cabin, Engine stuttering

What to Inspect:
  • Look for "black death" (carbon buildup) around the injectors under the engine cover
  • Test for smooth power delivery without hesitation
Verified by IsItAGoodCar Research Team

Hybrid 12V Battery Parasitic Drain

ModerateElectrics & Electronics

The auxiliary battery on Hybrid models can drain in as little as 10 days if left unused, leaving the car unable to start.

Est. Repair Cost: £150–£250
Warning Signs:

Car won't unlock or start, Multiple warning lights, Infotainment settings lost

What to Inspect:
  • Check the age of the 12V battery
  • Ask the owner if they use a trickle charger
Verified by IsItAGoodCar Research Team

Buying Tips for 2017 Infiniti Q50

  • ✓The 2017+ Red Sport 400 is the performance choice with 400bhp
  • ✓The 2.2d diesel is the sensible used buy but check for timing chain issues
2015–20162018
Check a 2017 Infiniti Q50 by Registration