2021 Porsche Cayenne Forward collision avoidance Problems
- Complaints
- 2about this part
- Share
- 10%of 21 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the forward collision avoidance of the 2021 Porsche Cayenne, 10% of the 21 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Much like thousands of Cayenne drivers, I am constantly let down by an ongoing issue with Adaptive Cruise Control failures with an error message that reads, “Adaptive Cruise Control unavailable.” THIS MAY CAUSE SERIOUS INJURY OR DEATH IF NOT REPAIRED AS VEHICULAR COLLISION RATES INCREASE DRAMATICALLY TO NO AVAIL. Porsche dealers are notoriously recalcitrant about taking adequate responsibility for these failures. The cost of repairing Porsche’s poor craftsmanship is either prohibitive or they are disinterested in repairing these problems within an acceptable timeframe. …”
NHTSA complaint #11593255, filed 2024-06Related service bulletins
- 11037046Aug 25, 2026Technical Information for White Messages Regarding Driver Assistance Systems in Conjunction with Passive Fault Memory Entries in the ZFAS Control Unit
- 11035741Jul 29, 2026ACC Dynamic Calibration Fault C110300
- 11027134Dec 3, 2025Technical information for Various Error Messages Regarding Driver Assistance Systems in the Instrument Cluster in Conjunction With Passive Fault Memory Entries in the Driver…
Forward collision avoidance: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 4 | 80% |
| 2025 | 4 | 80% |
| 2024 | 1 | 20% |
| 2023 | 1 | 20% |
| 2021 | 2 | 10% |
| 2020 | 1 | 4% |
| 2019 | 3 | 6% |
| 2018 | 1 | 8% |
| 2011 | 1 | 3% |
| 2005 | 1 | 3% |
Other parts of the 2021 Porsche Cayenne
6 complaintsOther or unknown
5 complaintsAir bags
4 complaintsEngine
3 complaintsBrakes
2 complaintsSteering
2 complaintsTransmission and drivetrain
2 complaintsBack-over prevention (rear camera)
1 complaintsFuel system
1 complaintsSeat belts
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2021 Porsche Cayenne
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology