Mercedes-Benz GLC X254 Coupé
Weaknesses, engine ratings and buying advice
Engine Overview
The Mercedes-Benz GLC X254 Coupé is available with 3 engine variants — from 169 to 272 hp.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| False emergency braking in snowfall Faulty parking sensors and camera systems trigger false warnings. In snowfall, the emergency brake assist activates unintentionally. Symptoms: Autonomous braking without obstacle, false obstacle warning, sign recognition incorrect from 10,000 km | Low | |
| MBUX software faults and assistance system failures The MBUX system freezes or becomes unresponsive. Assistance systems can be permanently deactivated. OTA updates often only temporarily relieve the symptoms. Symptoms: Touchscreen unresponsive, camera stays black, assistance systems permanently failed | Medium | |
| MBUX Software Instability and Crashes MBUX system shows sporadic crashes, sluggish responses and connection drops, especially in early production months. Software updates at the workshop frequently needed. Symptoms: Display freezes, black screen, voice control unresponsive, navigation drops out | Low | |
| Driver Assistance Systems and Sensors Faulty Park assist detects non-existent obstacles, brake assist brakes without reason in snowfall, blind spot monitor fails. False alarms can trigger dangerous situations. Symptoms: Unprovoked full braking, parking beeps without obstacle, blind spot warning permanently off | Medium | |
| MBUX system overheats and fails The MBUX system gets very hot on longer journeys. The display shows visual noise or goes black in heat. The fault disappears after cooling down. Symptoms: Display shows coloured noise or goes black, warm air from display area from 20,000 km | Medium | |
| MBUX Software Faults and Camera Failure Early C254 models show software faults: rear camera stays black, driver assistance fails, screen freezes. Usually resolvable after OTA updates. Symptoms: Rear camera shows no image. Screen freezes. Distronic and lane-keeping assist report errors. from 15,000 km | Medium |
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee