While driving in traffic on a busy highway, I heard a loud clunk from the rear of the car and it instantly decelerated from 70+ miles per hour to 22 miles per hour, where it stayed and would not go faster. I had to get across 3 lanes of traffic to exit. Thereafter, the car would not move and had to be put on a flatbed to get to the Porsche dealer. Note that for 2 years prior the transmission had emitted a whine while in first gear. The dealership (Porsche Austin) said it was normal, but it is a known problem among owners, possibly related to the input shaft bearing. They did not fix it when the problem was first raised. The dealership has diagnosed it only as a transmission error, without providing further detail on what is actually wrong. I should be able to access my dash cam footage if helpful.

Source: NHTSA complaint ODI #11732597 · view all complaints for this vehicle at nhtsa.gov

The mapping system is out of date and tried to route me to an offramp that doesn't exist. I did some research and found the offramp changed over 4 years ago, roughly when the car was built. I took the car to my local dealership to get the maps updated and Porsche claims I have the latest map. I think this is a dangerous situation if someone tried to drift off the road in bad weather (for example) where an offramp doesn't exist. Their newer cars show the correct mapping. Porsche should be made to make the latest maps available to all their cars. It would cost them nothing if they simply posted the data on a website for a user to move it to a USB drive and plug it into the car.

Source: NHTSA complaint ODI #11733098 · view all complaints for this vehicle at nhtsa.gov

My Porsche Taycan unexpectedly applies the brakes on its own while traveling at highway speeds and flashes a red warning message instructing me to take control of the steering wheel, even though both of my hands are already on the wheel. This is extremely dangerous because sudden braking at high speeds creates a major risk of rear-end collisions and loss of control. When It Occurs: This issue started recently and has happened multiple times under normal driving conditions (clear weather, open road, both hands on the wheel, no imminent obstacle). It appears to occur without warning and without any legitimate reason for emergency braking. Approximately 3 times in 1 month. Dealer Response: I reported the problem to my Porsche dealership. They claimed this behavior is “normal,” but also acknowledged that many other owners have experienced similar issues. Despite this, they offered no fix and did not classify it as a defect. I strongly disagree that this is normal—this is a critical safety hazard. I have another upcoming appointment for an additional check June 29, 2025. Safety Risk: Unexpected braking at highway speeds could lead to a rear-end crash, loss of control, or serious injury. This is not driver error. The vehicle is misinterpreting conditions or malfunctioning, and the warning to take control of the steering wheel despite both hands being on the wheel suggests a possible sensor or software failure.

Source: NHTSA complaint ODI #11676380 · view all complaints for this vehicle at nhtsa.gov

Tires on Taycan seems to wearing very odd. The inner side is getting signficantly faster wear than remaining tire resulting in tire burst within 8K miles. Replaced both rear tires 3 times in last 15 months.

Source: NHTSA complaint ODI #11590330 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2022 Porsche Taycan. The contact received notification of NHTSA Campaign Number: 25V221000 (Air Bags). The contact called a dealer about the recall and was advised that there was no part yet available for the recall repair. The contact called the manufacturer and was provided with similar information. The contact stated that there was a failure, but did not feel safe while a passenger was seated in the front seat. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The failure mileage was unknown.

Source: NHTSA complaint ODI #11688467 · view all complaints for this vehicle at nhtsa.gov

Porsche dealers are not fixing this recall. They offer service appointments 6 months in advance, and then cancel at the last minute. I've been trying to get this recall done for 18 months, with no success.

Source: NHTSA complaint ODI #11756474 · view all complaints for this vehicle at nhtsa.gov