Most common 2021 Mercedes-Benz AMG GLC63 problems
Share of the 2 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz AMG GLC63 complaints by model year
2021 Mercedes-Benz AMG GLC63 recalls (6)
Fuel system, gasoline › Delivery › Fuel pump
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.
Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.
Communication › Auto crash notification
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details.
Remedy: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022.
Exterior lighting › Headlights
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 GLC 300, GLC 300 4Matic, AMG GLC 63 4Matic, AMG GLC 63 S 4Matic, and AMG GLC 43 4Matic vehicles. The electrical connection for the headlights may not be watertight, which can result in headlight failure.
Remedy: Dealers will inspect and replace the headlight sealing plugs, as necessary, free of charge. Owner notification letters were mailed June 3, 2022. Owners may contact MBUSA customer service at 1-800-367-6372.
Electrical system › Software
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2021 CLA-Class, GLE/GLS-Class, A-Class, E-Class, E-Class Coupe and Convertible, GLA/GLB-Class, GLC-Class, CLS-Class, and AMG GT-Class 4-door Coupe vehicles. Please refer to MBUSA's recall report for specific vehicle model details.
Remedy: The multimedia system software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed beginning June 28, 2021.
Seats
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 C-Class, E-Class, E-Class Coupe and Convertible, GLC, CLS, AMG GT 4-door Coupe and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details.
Remedy: MBUSA will notify owners, and dealers will replace the seat position switches, free of charge. Owner letters were mailed May 21, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
Communication › Auto crash notification
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details.
Remedy: MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021.
2021 Mercedes-Benz AMG GLC63 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 4.0L 8-cyl turbo | 9-speed automatic | 4WD | 15 / 22 / 17 |
EPA ratings. Class: Small SUV.
Frequently asked questions
Is the 2021 Mercedes-Benz AMG GLC63 a good car?
Based on 2 owner complaints filed with NHTSA, the 2021 AMG GLC63 rates few complaints: about as many complaints as a typical year of the AMG GLC63 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2021 Mercedes-Benz AMG GLC63?
The electrical system — 1 complaint, 50% of all complaints for this model year, most often about ignition › coil. Next are the suspension (1) and transmission & drivetrain (1).
How many recalls does the 2021 Mercedes-Benz AMG GLC63 have?
There are 6 recalls for the 2021 Mercedes-Benz AMG GLC63, the most recent from June 26, 2023 (fuel pump). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
At what mileage do 2021 Mercedes-Benz AMG GLC63 problems happen?
The median mileage reported in complaints is about 65,000 miles; 0% of problems with a recorded mileage started before 50,000 miles.
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.