2020 PORSCHE TAYCAN Complaints

I was driving 30 mph in drive mode on westheimer rd when the car suddenly emergency braked and lost all power i went from 30 to 0 in about a second. Yes the car is available for inspection on request. The car had 180 miles of battery power. The car behind me slammed their brakes on and nearly slammed into the rear of the car. The red warning light came on "Electrical System Error park vehicle in a safe place". There was absolutely no warning before this occurred. I am afraid for my life with this car i nearly got into an accident at 30 mph let alone if i was on the highway i could have easily died. This problem has been reported with thousands of porsche taycans. The car has been at the porsche dealership for a week so far where they are reporting electrical faults in the car.

On March 30, 2023 I had my winter tires and wheels changed out for my summer tires and wheels Goodyear Eagle F1 Asymmetric 3 in sizes 265/35ZR21 101Y XLand 305/30ZR21 104Y XL. At the time, I had about 25,000 miles on the car, and perhaps 15,000 miles on the summer tires. The tire inspection report from Porsche indicated that I had acceptable tread depth on all tires, and no unusual treadwear. Around the end of June I started seeing a very slow pressure decrease in my left rear tire, from about 41psi to 38 psi over a few weeks. On July 18, I experienced a severe drop in pressure to 22 psi and I filled the tire with air to 45psi and used the tire sealant to drive the car to the Porsche dealer, and arrived with 29psi. At no point during the time I had the summer tires on did I ever do anything unusual, or hit any road hazards. Porsche provided me the attached video showing severe cracking between the sidewall and tread around the entire diameter of the drivers side rear, and cracking around part of the diameter of the passenger rear. They claimed this was due to 'misalignment' of the rear tires. The alignment report (attached) shows the drivers rear was within specification, and the passenger rear was 0.2 degrees out of camber (-1.8 deg vs spec of -1.6 deg). There was still 4mm of tread on the tire, and no unusual tread wear was noted on any tires. I have replaced all 4 tires, and am very concerned that the same thing may happen, and I could have a catastrophic failure at high speed. Porsche is unwilling to do anything other than pay for the drivers tire. I don't see how I can be assured that the exact same thing won't happen in the future, since there was no testing or observation that Porsche did that indicated any kind of problem.

Main HV Battery failure, "Electrical System Error" displayed, fortunately this occurred when pulling into the garage. Vehicle would not go into drive or reverse, vehicle had to be towed to the dealership. This could have ended very differently if on the highway. HV Battery Module and 12v battery replaced.

The contact owns a 2020 Porsche Taycan. The contact stated while driving 35 MPH, the power steering failure, and multiple warning lights were illuminated. The contact stated that the vehicle started to decelerate independently and failed to accelerate while depressing the accelerator pedal. The contact was able to park in a nearby driveway. The contact was able to restart the vehicle within 10 minutes and drove to her residence. The contact took the vehicle to the local dealer, where it was diagnosed with needing the gateway control unit to be replaced. The vehicle was repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 15,000.

I was driving in the fast/lane of the freeway, and suddenly the car flashed red "Electrical System Error" "Park Vehicle in Safe Place". The car immediately started to decellerate on its own and I didn't have time to go over to the right so had to move into the left shoulder of the freeway. I was stuck in the middle of the freeway, with cars driving fast coming around a bend of the freeway behind me having to swerve out of the way. Cops finally came to give me cover from behind. Dealership still trying to figure out what the issue is.

Car displayed the following message: Electrical system error Park vehicle in a safe place

Porsche Mobile Charger overheats, rated for 9.6kw but due to safety concerns Porsche adjusted default rate to 4.8kw. Rate can be reset to 9.6 each charge session increasing risk of fire.

It appears that the vehicle 12volt system battery has failed and I am unable to move the vehicle . I have tried to charge the 12volt battery but the car remains undrivable. I had the car towed to the dealership and they have said that the car needs a new 12Volt battery but it is on backorder and that they continue to work with the factory to resolve the issue.

In the center of the lane on a straight highway, vehicle will suddenly brake without warning. There are no vehicles ahead. A warning light comes on the dash and says “Driver Control Required,” yet both my hands are on the steering wheel. The feeling is that of a brake check performed by the electronic sensors of the car, and not at the driver’s command. Had there been a car following behind me, he could have hit me in the rear. Dealer is aware of the complaint but says, “system is working as designed.” Manufacturer responds by directing me back to the dealership. Yet the problem persists.

After the most recent recalls were repaired (all software) on my vehicle the brakes in the car were terrible. Soft /dead pedal feel. I almost rear ended other cars multiple times wen braking at slow speeds. Occasionally the pedal would go all the way to the floor when slowing to 3-5mph - This was consistent over multiple days after I got the car back from recall updates. Also , the first inc of brake pedal travel did not slow teh car at all.