✓ The faults of this engine were checked against sources (10/2026). Each item has at least two independent sources or an official recall or parts-maker technical note.
12V battery drained by control units not sleeping (early software)
usually 0–80,000 km · Medium risk
model years 2020–2022 only
Signs: Car is dead or will not switch on after a few days parked; screens reboot or freeze
Fix: Install the current ID software (3.x or newer) and have the quiescent current measured; replace the 12V battery only if it was deeply discharged
€0–300
Sudden loss of drive power: battery management / inverter software (ID.4 2020-2022)
usually 0–100,000 km · High risk
model years 2020–2022 only
Signs: Drive power cuts out while driving, warning on the dash; steering and brakes keep working
Fix: Ask a dealer to check by VIN that the battery management and pulse inverter software updates are installed
free / recall
Rear motor whine or jerky take-off (calibration, software)
usually 0–150,000 km · Wear part
Signs: Whistle or hum from the rear drive unit, or jerks when pulling away
Fix: Software update for motor control and inverter first; inspect the drive unit only if the noise stays
€0–300
HV battery capacity loss (normal ageing)
usually 100,000–300,000 km · Wear part
Signs: Range about 5-10 % below new; less in winter
Fix: Normal; check the battery state of health before buying. VW covers the battery for 8 years / 160,000 km against falling below 70 %
free / recall