2021 Porsche Cayenne GTS Recall: Cracks may develop on the surface of the engine cylinder bore
NHTSA campaign 21V341000 · Engine · filed May 12, 2021 · verified Jul 30, 2026
The defect
Porsche Cars North America, Inc. (Porsche) is recalling certain 2021 Cayenne Turbo, Cayenne GTS, and Cayenne GTS Coupe vehicles. Cracks may develop on the surface of the engine cylinder bore.
The risk
Cracks may cause engine damage and a stall or an oil leak, increasing the risk of a crash or fire.
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
Dealers will replace the engine, free of charge. Owner notification letters were mailed July 9, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB1.
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 |
|---|---|---|
| Porsche | Cayenne GTS | 2021 |
Related recalls
More Porsche Cayenne GTS recalls
Other campaigns involving Porsche vehicles
Source: NHTSA recall database, campaign 21V341000 (manufacturer number AMB1). Data last verified Jul 30, 2026.