The problem
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 AMG GT 63 S E Performance 4-door coupe, 2025 AMG GLC 63 S E Performance, GLC 63 S E Performance Coupe, AMG GT 63 S E Performance, 2023-2025 AMG S 63 E Performance, and 2024-2025 AMG SL 63 S E Performance vehicles with a hybrid powertrain. A software error may cause the high-voltage starter alternator control unit to fail, causing a loss of drive power.
The risk
A loss of drive power increases the risk of a crash.
The fix
Dealers will update the high-voltage starter alternator control unit software, free of charge. Owner notification letters were mailed April 11, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025030012.
Recall details
| NHTSA campaign | 25V-129 (25V129000) |
|---|---|
| Manufacturer number | 2025030012 |
| Manufacturer | Mercedes-Benz USA, LLC |
| Component | Electrical system › Propulsion system |
| Report date | February 28, 2025 |
| Owners notified | April 11, 2025 |
| Vehicles affected | 2,943 |
| Initiated by | Manufacturer |
Vehicles covered
- 2025 Mercedes-Benz AMG GLC63 S E 4MATIC+
- 2024 Mercedes-Benz AMG S 63 E 4MATIC+
- 2025 Mercedes-Benz AMG S 63 E 4MATIC+
- 2024 Mercedes-Benz AMG SL63 S E
Plus 6 other model/year combinations not covered on this site.
Frequently asked questions
Is the recall 25V-129 repair free?
Yes. Mercedes-Benz dealers will fix the problem at no cost: Dealers will update the high-voltage starter alternator control unit software, free of charge. Owner notification letters were mailed April 11, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025030012.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 2,943 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.