The problem
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020 CLA45 AMG vehicles equipped with 4-cylinder gasoline engines. Incorrect spark plugs may have been installed, which could come apart over time and cause engine damage.
The risk
Engine damage may result in an engine stall, increasing the risk of a crash.
The fix
MBUSA will notify owners, and dealers will replace the spark plugs, free of charge. The recall began April 14, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
Recall details
| NHTSA campaign | 21V-124 (21V124000) |
|---|---|
| Manufacturer | Mercedes-Benz USA, LLC |
| Component | Electrical system › Ignition › Coil › Spark plugs |
| Report date | February 26, 2021 |
| Owners notified | April 14, 2021 |
| Vehicles affected | 7 |
| Initiated by | Manufacturer |
Vehicles covered
Frequently asked questions
Is the recall 21V-124 repair free?
Yes. Mercedes-Benz dealers will fix the problem at no cost: MBUSA will notify owners, and dealers will replace the spark plugs, free of charge. The recall began April 14, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 7 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.