2018 Porsche Cayenne Pre-Purchase Inspection Checklist
Known Issues — 2018 Porsche Cayenne
MODERATE
PCM infotainment software glitches and module communication errors on high-mileage units
MODERATE
Air suspension compressor and strut wear common on high-mileage units
MODERATE
Carbon buildup on intake valves — direct-injected V6/V8 engines are prone to buildup over time
MINOR
Panoramic sunroof wind noise at highway speeds
MINOR
Brake dust shield rattling against rotors
MINOR
Rear hatch power strut failure causing lid to fall
What to Inspect
- Verify all PCM and module software is fully updated
- Test air suspension at all ride heights
- Check intake valves for carbon on higher-mileage units
- Verify panoramic roof seals and test for wind noise
- Test all PDCC, PASM, and chassis electronics
- Inspect brakes for uneven wear and dust shield clearance
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Engine oil service | every 10,000 miles | $250-$400 |
| Major service (plugs, filters, fluids) | every 30,000 miles | $800-$1,400 |
| Intake valve walnut blast | every 40,000-60,000 miles | $600-$1,000 |
| Air suspension service | as needed | $1,000-$2,500 |
| Brake pad/rotor replacement | every 30,000-50,000 miles | $900-$1,600 |
| Transfer case fluid | every 40,000 miles | $300-$500 |
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