What is the Hybrid 12V Battery Parasitic Drain problem on a 2018 Infiniti Q50?

Reliability Guide

Common Problems with the
2018 Infiniti Q50

We've identified 1 known issue that can affect the 2018 Infiniti Q50. None are considered critical, but they're worth knowing about before you buy.

Known Issues

Serious

Moderate

Minor

The 2018 period has an average number of reported issues compared to other Infiniti Q50 year periods.

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.

Most affected: Hybrid

Estimated cost: £150–£250Affects: 2013–2018Often appears around: Low-use vehicles

✓If the car has "Direct Adaptive Steering" (steer-by-wire), test it extensively; ensure there are no warning lights, as repairs are highly specialized.
✓Check the dual-screen infotainment system, which is known to be laggy and can occasionally freeze or reboot unexpectedly.
✓On the 2.2d (Mercedes-sourced diesel), check for smooth power delivery and ensure the DPF is not blocked from short city trips.
✓Listen for suspension knocking, particularly from the front anti-roll bar drop links.
✓Inspect the interior trim; while luxurious, the leather on the driver's seat bolsters can wear prematurely.
✓Ensure the automatic gearbox shifts smoothly without hesitation, particularly when downshifting under load.