2020 Mercedes-Benz GLB Pre-Purchase Inspection Checklist
Known Issues — 2020 Mercedes-Benz GLB
MODERATE
MBUX infotainment software instability on early X247 units
MODERATE
8G-DCT dual-clutch transmission hesitation and jerk at low speeds
MODERATE
Oil consumption in M260 2.0L turbo engine
MINOR
Third-row seat folding mechanism difficult to operate
MODERATE
OTA update failures requiring dealer reflash on early builds
MINOR
Front wiper chattering in light rain conditions
What to Inspect
- Test MBUX — full reboot and test all functions
- Drive dual-clutch in urban slow traffic from standing starts
- Check oil level relative to service history
- Test third-row seat fold and unfold mechanism
- Confirm all OTA updates are applied
- Scan all modules for fault codes
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Service A (oil & filter) | every 10,000 miles | $230-$340 |
| Service B (full inspection) | every 20,000 miles | $480-$700 |
| Spark plugs replacement | every 60,000 miles | $220-$370 |
| Dual-clutch transmission fluid | every 40,000 miles | $320-$480 |
| Brake pads and rotors (front) | every 30,000-40,000 miles | $550-$850 |
| Cabin air filter | every 20,000 miles | $70-$110 |
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