2020 Porsche 911 Pre-Purchase Inspection Checklist
Known Issues — 2020 Porsche 911
MINOR
Early 992 software bugs causing PCM freezes and infotainment reboots
MINOR
PDK 8-speed software calibration issues causing harsh downshifts in Sport mode
MODERATE
Rear-axle steering module software faults on early production cars
MODERATE
Carbon buildup on intake valves — new engine still uses direct injection
MINOR
HVAC evaporator condensation drain clogging causing water intrusion
MINOR
Sport exhaust valve noise and rattle at cold start
What to Inspect
- Verify PCM software is fully updated — check for known TSBs
- Test rear-axle steering at low and high speed
- Confirm 8-speed PDK shifts smoothly in all modes
- Check for intake valve carbon — early 992 production units may need first cleaning
- Verify all driver assistance systems function correctly
- Inspect for any warranty claims or open recalls
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Major service (spark plugs, filters, fluids) | every 30,000 miles | $1,000-$1,600 |
| Intake valve walnut blast cleaning | every 40,000-60,000 miles | $600-$1,000 |
| 8-speed PDK fluid | every 40,000 miles | $350-$550 |
| Brake fluid flush | every 2 years | $150-$250 |
| Tire replacement (rear 305/30-20) | every 15,000-25,000 miles | $1,400-$2,000 |
| Annual inspection | yearly | $500-$800 |
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