2020 Mercedes-Benz AMG CLA45 Recall: Incorrect spark plugs may have been installed, which could come apart over…
NHTSA campaign 21V124000 · Electrical System · filed Feb 26, 2021 · verified Jul 30, 2026
The defect
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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Mercedes-Benz | AMG CLA45 | 2020 |
Related recalls
More Mercedes-Benz AMG CLA45 recalls
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- 2023 Mercedes-Benz AMG CLA45 — Tires may leak air
- 2019–2021 Mercedes-Benz A 220 and 58 other models — Please refer to MBUSA's recall report for specific vehicle…
- 2019–2020 Mercedes-Benz A 220 and 29 other models — Please refer to MBUSA's recall report for specific vehicle…
Other campaigns involving Mercedes-Benz vehicles
- 2026 Mercedes-Benz AMG GLE53 4MATIC+ and 13 other models — Bolts for the rear seat belts may not be tightened properly
- 2026 Mercedes-Benz CLA 250+ (ev) and 1 other model — Front passenger seat belt retractor may have been…
- 2025–2026 Mercedes-Benz AMG C43 4MATIC and 34 other models — Infotainment control unit may reset while the vehicle is in…
All Mercedes-Benz AMG CLA45 recalls → · All Mercedes-Benz recalls →
Source: NHTSA recall database, campaign 21V124000. Data last verified Jul 30, 2026.