2023 Mercedes-Benz GLC Pre-Purchase Inspection Checklist
Known Issues — 2023 Mercedes-Benz GLC
MODERATE
MBUX infotainment software instability on early build units
MODERATE
48V mild hybrid system fault codes on some vehicles
MODERATE
PHEV charging port door actuator failure
MODERATE
Rear-axle steering calibration loss after wheel service
MODERATE
OTA update failures requiring dealer intervention
MINOR
GLC43 exhaust flap rattle at cold start
What to Inspect
- Test MBUX fully — all menus, voice, navigation, media
- Check 48V system fault codes and mild hybrid engagement
- Verify PHEV charging port opens and closes smoothly
- Test rear-axle steering at parking speeds (if equipped)
- Confirm all OTA updates are applied and no errors pending
- Listen for GLC43 cold-start exhaust rattle
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Service A (oil & filter) | every 10,000 miles | $300-$450 |
| Service B (full inspection) | every 20,000 miles | $650-$950 |
| Spark plugs replacement | every 60,000 miles | $300-$500 |
| Transmission fluid service | every 40,000 miles | $400-$600 |
| Brake pads and rotors (front) | every 30,000-40,000 miles | $750-$1,100 |
| PHEV high-voltage battery check | every 30,000 miles | $200-$400 |
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