NHTSA (USA)High Risk
2020 MERCEDES-BENZ AMG CLA45NHTSA Campaign #21V124000
The official notice
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.
Safety Risk
Engine damage may result in an engine stall, increasing the risk of a crash.
Remedy
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.
7 vehicles affectedUpdated June 10, 2026