What 69 owners told NHTSA about the 2021 Porsche Taycan 4s With Performance Pack

No heater for cabin or front windshield defroster, available for inspection. Ice build up in inside limiting visibility Taking care in but need to wait 4 weeks for appointment. Has not been inspected yet. No warnings just cold air blowing.

NHTSA ODI 11510739

The brakes fail in wet conditions. Porsche Taycan has 2 brake systems- light braking is regenerative braking (converting mechanical energy into electricity) and for heavier braking the mechanical disc brakes take over IN THIS FAILURE SITUATION in wet conditions pressing the brake pedal does VERY LITTLE to slow the car. DURING THESE FAILURE SITUATIONS, there is 0 regenerative braking occurring. Normally if there is 0 regen braking mechanical brakes engage at 1% brake pedal press so the entirety of the brake pedal engages the mechanical brakes. DURING THIS FAILURE SITUATION, the mechanical braking system does not engage early so it does not begin to engage until near the end of the brake pedal travel. DURING THIS FAILURE EVENT, THE MECHANICAL BRAKES ARE ONLY AT MINIMAL STOPPING POWER (+/- 20%). It has been compared to the first stop after getting a car washed– one must ‘jam on’ their brakes in order to get their car to stop, after which it tends to stop well. Cars come from the car wash at 1-3 mph, so 10-20% braking power does not put the user in jeopardy. IN THESE FAILURE SITUATIONS THE PORSCHE TAYCAN only has 10-20% stopping power WHILE TRAVELLING ‘AT SPEED’ ON NORMAL ROADWAYS The first time this happened I was approaching a stop light in traffic. If the turn lane weren’t empty I WOULD HAVE CRASHED into the cars ahead of me; I jerked the car into the turn lane & eventually came to a stop, with the brake pedal pressed in at 100% for the entire time. It happens at speeds from 3-50 mph It HAS been reproduced with myself in the car by Porsche service, and by other people in their cars, it was reproduced on my car AND ALL OTHER TAYCANS ON THE LOT at the dealer – each car did it The dealer has done ‘everything in their power’ but it is still happening. I was told Porsche NA was investigating on their wet track at their Atlanta HQ, but that the cars ‘tested as designed’ No warning messages or errors –the regen braking gauge always shows 0% while this happens

NHTSA ODI 11509792

On December 29, 2022, the heater unit in the car failed. This caused ice to form on the inside of the car, all windows. Winter in Chicago. Dealer said they are aware of other Tacans having this came issue but there are no parts available and could be 4 to 6 weeks for parts. it is now February 15th and still no parts and the car is unsafe to drive as you can not see out of the windows. If you look on the website in Europe there are reported over 800 of these cars with the same issue and now Audi is having the same issue. These cars are unsafer and should be removed from the roads.

NHTSA ODI 11507742

Cabin Heat not working at all. Fan blows but the cabin does not get warm.

NHTSA ODI 11506332

Several times when driving (3) the vehicle loses all power and stops. Warning error messages are displayed on the dashboard screen ("Electrical system error") and "Engine Control Error" This is a dangerous situation, as the car suddenly just went dead on the middle of the highway. with cars having to swerve out of the way to avoid hitting my vehicle. The vehicle has been in the Porsche dealer once to have this issue rectified, but has happened again twice since that time.

NHTSA ODI 11501045

The heating unit and defrosting unit fail on the Porsche Taycans. I have seen this in other Porsche Taycans and it is nearly impossible to see through the windshield when it fails. I had to cautiously limp it to a Porsche dealership due to not being able to see out of the front windshield. There were no warning lamps or messages displayed simply zero heat and the driver side and passenger side windshield areas immediately fog up and it is impossible for it to be reduced.

NHTSA ODI 11499717

Cabin heater in the car failed during very cold temperatures. Making the windows fog up considerably. Limiting my trips to short distances until this problem can be fixed due the safety concern of the windows fogging during longer trips. No warnings to the failure, dealer is aware of this being a common issue on the Taycan.

NHTSA ODI 11498160

Spontaneous shutdown of the vehicle while driving. Critical failure of motility while driving. Driving at 50km per hour extremely dangerous as car just shutdown and I had to try to roll off the road but it died so I had to put it in neutral and push it by hand on a busy road. Car has been at the dealer for 3 weeks now. The spontaneous shut occurred and a red light came on.

NHTSA ODI 11496914

While driving my Porsche Taycan 2021 (5000 miles) Nov 4th, 2022, at highway speeds on I-15 to Vegas, the instrument cluster started flashing "Electric System Error" and instructed me to park in safe place immediately and call Roadside Assistance. I had to park on the hard shoulder and wait for a tow truck. It was scary as there were big rigs passing my every 10-20 seconds. Car was towed to the Porsche dealer in Vegas. Upon inspection it was found that the "High Voltage Converter" had malfunctioned and had to be replaced. This is very concerning that a critical EV component can fail in new car, which had done just over 5000 miles. Dealer replaced the component and now the vehicle is running fine but I am very skeptical to take the car out on long drives.

NHTSA ODI 11496955

There have been four total episodes when the car would not accelerate when the acceleration pedal was pressed. The last time it happened (late October 2022) the acceleration was very sluggish and I barely made it home. This happened on a residential street, and continued for 10+ minutes. If this power loss occurred on a highway, it could have lead to a very dangerous situation. There were no errors/warnings on dash. I brought the car for service to address this issue on Nov 2nd to Porsche Irvine. They told me that they identified a problem and had to replace "rear control unit" but since it's not available, they cannot provide ETA and car is still in service for 30 days now.

NHTSA ODI 11495919

The car experiences issue, after issue, including but not limited to collision alert warning not functioning, lane change assist failure, and the alarm sounding (disturbing the peace). As Porsche fixes the issues one by one, other matters emerge. The latest is the antania, and communications.

NHTSA ODI 11485935

Driving at night at ~72 mph on a 65 mph divided highway with no traffic nearby the Collision Warning message appeared on the dash and the car noticeably slowed perhaps 5-10 mph. Then the msg cleared itself and the trip was completed otherwise uneventfully.

NHTSA ODI 11476728

November 27,2021 Electrical System Failure . Car was parked in a parking lot . RED system failure error . After 30 minutes the car started and I drove it to Town Motors Porsche , Englewood NJ (purchase dealer). They had car for ~ 3 weeks and "everything is fine." July 6th 2022: Identical Electrical Systems failure . Again while car was parked in my garage . Car started on its own several hours later . Drove car to Town Englewood Porsche , Englewood NJ . The car is clearly unsafe and I do not feel comfortable driving this car. I do NOT want to be the first casualty because it fails on a highway . Porsche needs to take ownership . Taycan forum online clearly show that this is an issue with this car .

NHTSA ODI 11472637

This vehicle is fully electric, and it uses regeneration while braking. With regeneration on, the braking distance is much shorter than without. The driver does NOT have any means to turn regeneration off while braking. In some instances, the first time the braking system is engaged, regeneration does not kick in, and the braking distance is unexpectedly longer than usual. This has always happened after the car was off for a while and only during the first hard braking. I captured a video of one of these instances.

NHTSA ODI 11458089

The Taycan offers what Porsche calls Porsche Innodrive (PID). PID once activated, the car uses navigation information and road signs to automatically adjust the vehicle's speed to the speed limit of the road. In some instances, the system speed freezes at, e.g., 50 mph and no longer adjusts to the speed limit of the road. When this happens, the vehicle will accelerate to the speed it froze at. I have experienced this multiple times. See attached image. The car indicates that it would accelerate to 50 mph in a 25 mph zone. This has happened multiple times, with speeds frozen at 65 mph.

NHTSA ODI 11458090

The Taycan offers what Porsche calls Porsche Innodrive (PID). PID once activated, the car uses navigation information and road signs to automatically adjust the vehicle's speed to the maximum speed limit of the road. In some locations, the vehicle abruptly reduces its speed because PID misreads a Truck Speed Limit sign, e.g.: the vehicle is moving at 65 mph, then it abruptly reduces the speed to 35 mph, which can cause another closely following vehicle to crash into the Taycan.

NHTSA ODI 11458091

Electrical system error message appeared when I turned on the car. I exited and locked the car in an attempt to reset the system. I tried this several times with no success so I attempted to call for a tow. After waiting 20 minutes I tried again to exit the car and lock it. This time when I reentered the car it started and I drove home.

NHTSA ODI 11453560

The Park Assist system frequently throws a warning that the system is malfunctioning & requires service. During this time the system does not in fact work. However, the system will work again after the car has been turned off for a while, so it seems like the error message is wrong and it’s more of a software problem then a hardware problem that requires service.

NHTSA ODI 11442473

Rearview camera picture quality is poor, even in ideal weather conditions.

NHTSA ODI 11438490

On August 28, 2021, I was on I-75 in light traffic going about 70 MPH when a red alert on my screen appeared that said, “COLLISION WARNING.” It remained illuminated for about 3 seconds, then disappeared. It startled me because I didn’t know what evasive action to take. There were no vehicles even close to me. I also continue to receive "Driver Attention Required" warnings from time to time. My dealer told me that can happen if I don't have both hands on the wheel. In all instances, I had both hands tightly on the wheel. I sent an email to my dealer's manager with a request that he document this with Porsche corporate and that I receive a written response that includes the number of owners reporting a similar event to Porsche, Porsche's attempts to ascertain a cause, Porsche’s determination of the probable cause and Porche’s proposed remedy. He replied, "I’ve escalated your concerns to PCNA." They asked me to take my 2021 Taycan RWD in for them to download the event log for analysis. I did that. Hearing nothing back three weeks later, I followed up with another email to my dealer. I promptly received a phone call from the service manager saying that he was told by PCNA "that they reviewed the log, they have never seen or heard of the problem and that they don't know what may have caused it."

NHTSA ODI 11436290

I'm submitting this information because I was in a accident and my airbags didn't deploy, taking speed and location of impact into consideration I think the airbag should've deployed, the vehicle that crossed over from the left 3rd lane to make a right turn was luckily hit on rear passenger door of SUV avoiding center pillar and rear tire, however their vehicle airbag did deploy for its front passengers and my passenger EV sports sedan airbags did not. Currently my EV passenger sports sedan hasn't been assessed, it has been towed to Tysons Corner Collision Center in Vienna, VA. I had no airbag failure notices prior to 9/25 accident which occurred on E Market Street and Cardinal Park Drive., Leesburg, VA The claim has been submitted to USAA.

NHTSA ODI 11435205

The vehicle would loose braking pressure after a few minutes of driving. This occurred when the vehicle transitions from regenerative braking to standard braking. Dealer states it is a problem with the brake booster.

NHTSA ODI 11433024

Got into the car like every morning but car displayed a warning “Electrical System Error, Park vehicle in safe place” Car would not start

NHTSA ODI 11431568

The rear camera required by the DOT presents a distorted image making objects appear farther away than they actually are. The problem is a commonly discussed topic as an issue with the camera software on multiple Taycan Forums. See: https://www.taycanforum.com/forum/threads/backup-camera-quality-to-improve.6423/page-3#post-91894 The safety of persons standing to close to the vehicle may be impacted as the driver would think they are father away from the vehicle. Damage to property can occur by relying on the image and hitting an object that appears farther away than it is. I backed up into a garage pillar support which presented being farther away from the vehicle than it was causing US$2,500 to repair. The vehicle has not been inspected, this is a widely complained about issue among Taycan owners See the Taycan Forum https://www.taycanforum.com/forum/threads/backup-camera-quality-to-improve.6423/page-3#post-91894

NHTSA ODI 11431492

I am getting a warning and sometimes unwanted braking. the warning is that driver must assume control but this happens when I have all the driver's assist features turned off. on a recent 1500 mile road trip this fault happened at least 10 times at highway speeds.

NHTSA ODI 11430353