2021 BMW M4 Pre-Purchase Inspection Checklist
Known Issues — 2021 BMW M4
CRITICAL
S55/S58 rod bearing wear on track-driven or high-mileage examples
MODERATE
DCT clutch wear with aggressive track use
MODERATE
Carbon buildup on direct injection
MODERATE
Cooling capacity limited under sustained track use
CRITICAL
Track use very common — thorough inspection critical
What to Inspect
- Check rod bearing condition
- Inspect for track use — brake, tire, clutch wear
- Test DCT or manual transmission
- Scan all modules for fault codes
- Verify oil change history — critical for engine
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Oil change (S55/S58) | every 5,000 miles | $180-$280 |
| Brake pads + rotors (front) | every 15,000-25,000 miles | $700-$1,500 |
| Spark plugs | every 40,000 miles | $300-$500 |
| Rod bearing inspection | every 40,000 miles | $500-$1,500 |
| Clutch inspection (manual/DCT) | every 30,000 miles | $200-$500 |
| Coolant flush | every 3 years | $150-$250 |
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