IsItAGoodCar
Reliability Guide

Common Problems with the
2020 Porsche 911 (992)

We've identified 4 known issues that can affect the 2020 Porsche 911 (992). None are considered critical, but they're worth knowing about before you buy.

4
Known Issues
0
Serious
2
Moderate
2
Minor

All Known Issues

PADM Failure

ModerateSuspension & Chassis

Like the 991, the active engine mounts remain a point of potential failure on the 992.

Est. Repair Cost: £1,200–£1,600 per side
Warning Signs:

PADM Fault message, Rumble at idle

What to Inspect:
  • Check dashboard for warnings
Verified by IsItAGoodCar Research Team

Ignition Coil Failure

ModerateEngine

911s have a history of burning through coil packs. The 992 coils are prone to corroding and failing, causing misfires. The retaining bolts also corrode frequently.

Est. Repair Cost: £200–£400
Warning Signs:

Cylinder misfires, Hesitation upon acceleration, Rough idling, Hard starts

What to Inspect:
  • Scan for misfire codes
  • Inspect coil packs for corrosion
  • Check bolt condition
Verified by IsItAGoodCar Research Team

PCM & Electrical Glitches

MinorElectrics & Electronics

Software bugs in the infotainment system can cause screen freezes or CarPlay disconnects.

Est. Repair Cost: £0–£200 (Software update)
Warning Signs:

Screen freeze, Connectivity issues, Ghost alarm triggers

What to Inspect:
  • Ensure the latest software updates are installed
Verified by IsItAGoodCar Research Team

Bose Speaker Rattle

MinorInterior & Trim

The Bose speaker mounts in the door panels are known to develop a rattle or complete failure, particularly the driver side door speaker.

Est. Repair Cost: £200–£500
Warning Signs:

Door speaker rattling, Distorted audio from one door, Speaker failure

What to Inspect:
  • Listen to all speakers during test drive
  • Check for rattling from door panels
Verified by IsItAGoodCar Research Team

Buying Tips for 2020 Porsche 911 (992)

  • Check for rattles from the Bose speakers in the doors; a known issue with the speaker mounts.
  • If the car is not a daily driver, use a CTEK Lithium charger; the Li-ion batteries are expensive if they fail.
  • Check the condition of the lightweight glass on GT3/RS models for spontaneous cracks.