Vehicle recall R/2021/304

Mercedes-Benz C-Class and others recall: The belt tensioner arm may have been manufactured with borderline tolerance

DVSA recall R/2021/304 names the Mercedes-Benz C-Class, Mercedes-Benz E-Class, Mercedes-Benz GLE and Mercedes-Benz GLC. It was launched 23 September 2021. It covers vehicles built 9 January 2019 to 17 March 2021.

Recall data updated 22 September 2026

Recall: R/2021/304
Launched: 23 September 2021
Issued by: MERCEDES-BENZ CARS UK LTD
Manufacturer reference: SRPC2141
Vehicles: DVSA lists 427 on each model line

What can go wrong

The belt tensioner arm may have been manufactured with borderline tolerance.

The fix

Replace the belt tensioner. Additionally check the v-ribbed belt on the affected vehicles and replace it if necessary.

Models and build dates

As listed in the DVSA recall file. DVSA lists the same vehicle number on each line: 427. It may be a figure per line or for the whole recall.
Model	Built	Vehicles
Mercedes-Benz C-Class	9 January 2019 to 17 March 2021	427
Mercedes-Benz E-Class	9 January 2019 to 17 March 2021	427
Mercedes-Benz GLC	9 January 2019 to 17 March 2021	427
Mercedes-Benz GLE	9 January 2019 to 17 March 2021	427

Is a specific car affected? A recall lists models and build dates, not individual vehicles, so these pages cannot tell you whether one car is included. Enter the registration on the DVSA vehicle recall checker on GOV.UK, or give the vehicle identification number (VIN) to the manufacturer or one of its dealers. Buying used? Ask the seller for proof that any recall work was done.

Other recalls for these models

R/2021/286 The locking mechanism for the electrical connector of the side crash sensors might not meet specifications 9 September 2021, Mercedes-Benz GLC, Mercedes-Benz EQC, Mercedes-Benz E-Class
R/2021/274 Vehicles with a panoramic sunroofthe polycarbonate panel may not have been bonded correctly during a prior service repair 20 August 2021, Mercedes-Benz C-Class, Mercedes-Benz GLC, Mercedes-Benz GLA and others
R/2021/277 The driver's air bag may have a chemical change to its propellant over time 17 August 2021, Mercedes-Benz A-Class, Mercedes-Benz R-Class, Mercedes-Benz C-Class and others
R/2021/279 The driver's air bag may have a chemical change to its propellant over time 17 August 2021, Mercedes-Benz SLK, Mercedes-Benz M-Class, Mercedes-Benz R-Class and others
R/2021/340 A nozzle inside the suction jet pump in the fuel tank might not have been installed or fixed inside the pump according to specifications 5 November 2021, Mercedes-Benz S-Class, Mercedes-Benz C-Class
R/2021/359 Takata airbag might not deploy as specified 8 November 2021, Mercedes-Benz E-Class, Mercedes-Benz C-Class

Found one you might buy?

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Source

Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA vehicle recall records (RecallsFile.csv), recalls launched 1992 to 2026. Recall data updated 22 September 2026.

Recall wording is DVSA's, with capitals and punctuation tidied and American spellings such as tire, center and windshield given in British English. We list a recall when its make and model match a car or van family with at least 1,000 DVSA MOT tests from 2022 to 2025, and when the maker of the vehicle issued it.

Not affiliated with or endorsed by DVSA. Methodology · Data sources