2021 Mercedes-Benz GLB Pre-Purchase Inspection Checklist
Known Issues — 2021 Mercedes-Benz GLB
MODERATE
8G-DCT hesitation and jerk from rest in stop-and-go traffic
MINOR
MBUX freeze resolved by OTA update on most units
MODERATE
Oil consumption in 2.0L M260 turbo engine
MINOR
Third-row seat rattling during driving
MINOR
Rear parking sensors false triggers in narrow spaces
MODERATE
Front camera ADAS calibration loss after windshield repair
What to Inspect
- Drive dual-clutch in urban traffic for hesitation assessment
- Test all three rows of seats including third-row fold mechanism
- Confirm MBUX OTA version is current
- Check oil level relative to last service date
- Verify front camera calibration is active
- Run full diagnostic scan
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Service A (oil & filter) | every 10,000 miles | $230-$340 |
| Service B (full inspection) | every 20,000 miles | $490-$710 |
| Spark plugs replacement | every 60,000 miles | $220-$370 |
| Dual-clutch transmission fluid | every 40,000 miles | $320-$490 |
| Brake pads and rotors (front) | every 30,000-40,000 miles | $560-$860 |
| Cabin air filter | every 20,000 miles | $70-$110 |
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