NHTSA campaign 21V271000 · Porsche campaign AMA9
Porsche Recall 21V-271: Rear Axle Lock Nuts May Break
NHTSA recall 21V271000 (Porsche campaign AMA9) was reported by Porsche Cars North America, Inc. on April 21, 2021, with 1,568 vehicles potentially affected (per NHTSA). NHTSA's record lists the Porsche Cayenne for the 2021 model year. Owners were notified on June 18, 2021, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V271000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Porsche VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 21V271000 (also written 21V-271 or 21V271)
- Filed by
- Porsche Cars North America, Inc.
- Porsche campaign number
- AMA9
- Report received
- Potentially affected
- 1,568 vehicles (per NHTSA)
- Component
- Suspension — Rear — Axle — Non-Powered Axle Assembly
- Owners notified
Repair completion: 98.21% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 21V271000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Porsche
Porsche Cayenne
NHTSA's recall notice
As NHTSA's recall record states it for campaign 21V271000.
Defect description
Porsche Cars North America, Inc. (Porsche) is recalling certain 2021 Cayenne, Cayenne S, Cayenne Turbo, Cayenne GTS, Cayenne Coupe, Cayenne S Coupe, Cayenne Turbo Coupe, and Cayenne GTS Coupe vehicles. The lock nut on the trailing arm of the rear axle may break due to stress corrosion.
Safety consequence
A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.
Manufacturer remedy
Porsche will notify owners, and dealers will replace the lock nuts, free of charge. The recall began on June 18, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMA9.
Notes
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.
Sources
Official NHTSA notice for recall 21V271000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.