2018 Porsche Boxster Pre-Purchase Inspection Checklist
Known Issues — 2018 Porsche Boxster
MINOR
Turbocharger wastegate rattle on cold start
MODERATE
Carbon buildup on direct-injection intake valves
MODERATE
Oil separator membrane failure
MODERATE
Convertible top hydraulic seal degradation
MINOR
PCM infotainment occasional freeze
MINOR
Wind noise from convertible top seals at highway speed
What to Inspect
- Turbo cold-start rattle — listen carefully on first start
- Check intake valves for carbon deposits
- Convertible top operation, seals, and hydraulic fluid
- PCM update status and connectivity
- Oil separator function and intake system inspection
- Brake and tire condition
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Engine oil service | every 10,000 miles | $180-$300 |
| Intake valve walnut blast | every 40,000-60,000 miles | $500-$800 |
| Convertible top inspection/fluid | every 30,000 miles | $200-$400 |
| PDK transmission fluid | every 40,000 miles | $250-$450 |
| Brake pad/rotor replacement | every 25,000-40,000 miles | $600-$1,000 |
| Major service (plugs, filters) | every 30,000 miles | $700-$1,100 |
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