2015 Mercedes-Benz C-Class Pre-Purchase Inspection Checklist
Known Issues — 2015 Mercedes-Benz C-Class
MODERATE
Sunroof rattle and water ingress due to drainage tube blockage
MODERATE
9G-Tronic transmission jerky low-speed behavior in early build months
CRITICAL
Air suspension (if equipped) compressor failure leading to sagging ride height
MODERATE
Panoramic sunroof glass cracking spontaneously under thermal stress
MINOR
COMAND infotainment system freezes and requires hard reset
MODERATE
Front brake rotor warping causing steering wheel vibration under braking
What to Inspect
- Check sunroof drainage channels and headliner for water stains
- Test 9G-Tronic transmission for jerky low-speed shifts
- Verify air suspension (if equipped) raises and holds height evenly
- Inspect all four brake rotors for warping with test drive
- Confirm COMAND screen responsiveness and map update status
- Scan for stored fault codes with Mercedes XENTRY-compatible tool
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Service A (oil & filter, fluid check) | every 10,000 miles | $250-$350 |
| Service B (full inspection, brake fluid, cabin filter) | every 20,000 miles | $500-$700 |
| Spark plugs replacement | every 60,000 miles | $300-$450 |
| Transmission fluid service | every 40,000 miles | $350-$500 |
| Brake pads and rotors (front axle) | every 30,000-40,000 miles | $600-$900 |
| Air filter replacement | every 20,000 miles | $80-$130 |
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