Mercedes-Benz Clase A (W176): known faults of the gearbox and transmission according to L'argus

Engine / equipment

Mercedes-Benz Clase A (W176), all engines

Period mentioned

2012–2018

Symptoms

[manual gearbox] Clutch pedal does not return (up to February 2013); [7G-DCT dual-clutch] Abnormal noise between 60 and 80 km/h; [7G-DCT dual-clutch] Stiff 1st-to-2nd change (from September 2012 to May 2013); [7G-DCT dual-clutch] Reverse will not engage (up to June 2013); [7G-DCT dual-clutch] Crunch when changing gear (up to 30/06/2013); [7G-DCT dual-clutch] Gearbox locks in "P" (up to December 2013); [7G-DCT dual-clutch] Warning light on; [7G-DCT dual-clutch] Transmission noise, gears will not engage (OM651); [7G-DCT dual-clutch] Fault light on (from August 2014 to March 2016); [7G-DCT dual-clutch] Crunches when shifting from "D" to "R" (up to March 2017); [7G-DCT dual-clutch] 6th gear will not engage (petrol version); [7G-DCT dual-clutch] Bell-like noise at start-up (petrol version)

Possible cause described

According to the brand's technical notes reported by L'argus (each date shows up to when the affected cars were built): 1) [manual gearbox] Clutch pedal does not return (up to February 2013): Clutch release bearing. 2) [7G-DCT dual-clutch] Abnormal noise between 60 and 80 km/h: Fit a damper to the wheel half-shaft. 3) [7G-DCT dual-clutch] Stiff 1st-to-2nd change (from September 2012 to May 2013): Synchroniser. 4) [7G-DCT dual-clutch] Reverse will not engage (up to June 2013): Reprogramming. 5) [7G-DCT dual-clutch] Crunch when changing gear (up to 30/06/2013): Output shafts. 6) [7G-DCT dual-clutch] Gearbox locks in "P" (up to December 2013): Control unit. 7) [7G-DCT dual-clutch] Warning light on: Replace the automatic gearbox control unit and repair the EHS hydraulic control. 8) [7G-DCT dual-clutch] Transmission noise, gears will not engage (OM651): Dual clutch and flywheel. 9) [7G-DCT dual-clutch] Fault light on (from August 2014 to March 2016): Additional electric oil pump. 10) [7G-DCT dual-clutch] Crunches when shifting from "D" to "R" (up to March 2017): Output shaft or complete gearbox. 11) [7G-DCT dual-clutch] 6th gear will not engage (petrol version): Dual clutch. 12) [7G-DCT dual-clutch] Bell-like noise at start-up (petrol version): Flywheel.

Check for the garage

Compare your symptom and your car's build date with this list. If they match, tell the workshop and ask them to check that part first before replacing others. The brand or a warranty extension covers some repairs: ask the dealer with the car's details.

Cost cited in the source

No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Sources from the original database