Mercedes-Benz A Class Recall R/2021/292: Software Update To Improve Emissions, Who Is Affected And What To Do
- Low
- How serious
- 29 Oct 2021
- Launched
- 237
- vehicles in the UK
- SRPC2142
- Manufacturer’s campaign code
Mercedes-Benz recalled A Class vehicles built between 1 December 2009 and 20 July 2010. Nitrogen oxide emissions may not meet requirements. The dealer will update the diesel engine control unit software. You won't usually pay for it.1
What’s Wrong
Nitrogen oxide emissions may not meet requirements.
DVSA's Original Wording
Concern: SOFTWARE UPDATE TO IMPROVE EMISSIONS Defect: Nitrogen oxide emissions may not meet requirements. Remedy: Update the diesel engine control unit software.
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
The recall notice describes the concern as: software update to improve emissions.
The Fix
The dealer will update the diesel engine control unit software. The fix is a software update, which usually takes under an hour at the dealer.
Are You Affected?
A Class built between 1 December 2009 and 20 July 2010 may be included. Mercedes-Benz estimates 237 vehicles in the UK. Enter your registration to check, then confirm by VIN with Mercedes-Benz, because not every car in the date range may be included.
Which Car Is It?
Choose the make and model so we can match recalls to your car.
What To Do Now
- Check your car by registration above, then by VIN with Mercedes-Benz.
- Book with any franchised Mercedes-Benz dealer, quoting the campaign code SRPC2142 or the DVSA reference R/2021/292. See how to get a Mercedes-Benz recall fixed.
- Follow the letter's instructions until the repair is done. See can you drive a car with a recall?.
Related Recalls
| Launched | Vehicle and fault | Severity | Reference |
|---|---|---|---|
| A ClassInterior door handle release | Book soon | R/2026/098 | |
| A Class, CLAVariant of rear axle brake hose | Urgent | R/2025/131 | |
| A Class, B Class, CLA, EQA and 3 moreBackup function of steering software | Urgent | R/2024/166 | |
| A Class, C Class, CLA(117), GLA and 2 moreOn affected vehicles the panel located between the windshield and the panoramic sunroof might not have been bonded correctly during a prior service repair | Low | R/2024/024 | |
| A ClassOn affected vehicles the equipped tyres might not meet the load requirements | Book soon | R/2023/190 |
This is one of 833 Mercedes-Benz recalls in DVSA’s data. The Mercedes-Benz recall launched before it was R/2021/350 on 20 Oct 2021, for update the software in the engine control unit. The one launched after it was R/2021/340 on 5 Nov 2021, for a nozzle inside the suction jet pump in the fuel tank might not have been installed or…. You can also see every Mercedes-Benz recall, all recalls launched in 2021 and software recalls across every make.
Source: DVSA recall R/2021/292, launched 29 October 2021. Data updated 15 October 2026. How we grade urgency.
Sources
- The Code does not itself say repairs are free. GOV.UK guidance says "You will not usually have to pay for any repairs or parts under a safety recall." gov.uk Checked 15 Oct 2026.