Porsche Taycan

I own a 2020 Porsche Taycan 4S (in service Nov 2, 2020) with a performance+ HV battery. I am currently facing a third round of module replacements.  The service chronology and detail is set forth in the attached e-mail I sent to Porsche and the attached service reports. The safety concern I have is that when the defective modules fail, the vehicle suddenly becomes inoperable. The last failure incident in April 2026 resulted in the vehicle blocking in two other vehicles until it could be…

While driving my Porsche Taycan through a high-speed intersection, the vehicle suddenly displayed battery and chassis system error messages instructing me to pull over immediately. Before I could safely move the vehicle to the side of the road, it completely lost propulsion, speed control, and steering capability, causing the vehicle to abruptly slow to 0 mph in active traffic and leaving me stranded in the middle of the roadway. This created an immediate safety hazard, as approaching vehicles…

I have had two delaminations of my tires, one in August 2023, and one just this week - June 2026. Pictures are attached. Both tires had more than 50% tread left, and the tread was delaminating from the sidewall. MICHELIN PILOT SPORT 4S Max Performance Summer Tires in 285/40ZR22

My 2020 Porsche Taycan 4S (VIN [XXX]) has a recurring, dangerous brake failure that remains unresolved after multiple dealer repair attempts. At low speed, the automatic emergency braking system activates on its own and begins decelerating the car. As the car slows to roughly 5 mph, the brake pedal drops, braking pressure disappears, and the vehicle keeps rolling forward. Pressing the pedal as hard as I physically can does not bring the car to a stop. On more than 5 occasions I have had to…

Component/system: High-voltage (HV) battery system and power electronics. 2020 Porsche Taycan Turbo, VIN [XXX] . Vehicle available for inspection. Safety risk: Since January 2025, the vehicle has repeatedly displayed a pull over and park safely emergency warning and shut off unexpectedly while driving at highway and surface road speeds. Sudden loss of propulsion at speed created serious collision risk. Dealer-confirmed: Porsche Woodland Hills documented (July 2025): vehicle just shut off on…

When the forward collision warning activates, the braking pedal loses its effectiveness and causes the car to brake much more slowly than it should, which actually increases the chance of a collision occurring. This has happened multiple times to me in the past few weeks. It is a very dangerous problem.

The tungsten carbide coating on the PSCB (Porsche Surface Coated Brake) rotors has failed at 44,000 miles. This is not normal wear. The Taycan’s regenerative braking system handles the substantial majority of deceleration under normal driving conditions, meaning the mechanical brakes on this vehicle have seen a fraction of the use they would on a comparable internal combustion vehicle at the same mileage. Coating failure under these conditions is consistent with a material or manufacturing…

While driving my 2023 Porsche Taycan under normal conditions, the plastic underbody protection panel on the bottom of the vehicle came loose and detached. The metal underneath the plastic panel is now visibly bent. I did NOT hit any object. There was NO impact. I did NOT hear or feel anything during driving. There were no warning lights, alarms, or messages on the dashboard. The first indication of any problem was discovering the detached plastic and bent metal after the fact. This is a…

The vehicle has now gone into Turtle Mode three times in the last month. Twice to dealership without fixing issue. Turtle mode renders the car undriveable. There is no propulsion, car won’t go over 20 mph

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…