What 8 owners told NHTSA about the 2025 Porsche H1.3 Macan

While slowing to a near-complete stop and preparing to shift into Park at a low-speed private property location, the vehicle suddenly and violently accelerated without any driver input. The operator, a [XXX] experienced driver, had no time to react. The vehicle travelled approximately 200-300 meters uncontrolled, narrowly missed a grounds keeper operating a tractor on the paved road, left the paved road, drove over a fallen log and between trees, and stopped autonomously just before hitting a tree directly ahead. The driver did not brake at any point. The vehicle stopped itself. Physical evidence at the scene shows deep tire marks dug into soft ground consistent with autonomous emergency braking activation directed straight toward the tree. Four witnesses were present including a bystander who nearly was struck by the vehicle. A formal safety case has been opened with the manufacturer's corporate office. Federal safety complaint also filed with Transport Canada. A nearly identical sudden unintended acceleration incident involving a 2023 Porsche Macan while parking is already on record with NHTSA. This appears to represent a pattern on the same platform and warrants formal investigation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11741847

I had a red sign on dashboard saying:*chassis failure, park the car carefully.* the car was towed to Porshe. And, was released after one week as safe to drive and dismissed the sign as a glitch. The second day of releasing the car, I had a major accident while parking the car in the garage. The accident resulted in damage to the outer wall and to cabinets. I requested an investigation of the car and the results from Porshe weren’t convincing. I know I pushed the brake twice but the car jumped with acceleration twice and stopped because of the wreckage in front of it.

NHTSA ODI 11739807

I was driving on the highway at 60mph on a 4 month old 2025 Porsche Macan Ev 4S. I turned off the AC for both driver and passenger. I suddenly started seeing increasingly larger clouds of black smoke coming out of the passenger side of the cabin, and a clear and increasing smell of something burning. I had to roll down my windows because of the smoke. The cabin filled with black smoke. I tried different things to see if something was broken, and as part of my troubleshooting I turned the AC back on. That got the smoke to clear. There was no warning indicator, no message and no service required indicator on my dash. I did not receive any recall notices. I brought the car in to the Porsche Bellevue Service Center to get it serviced. The service attendant insisted that as the car was not reproducing the issue at that exact moment there was nothing they could do more than a visual inspection. I insisted and they agreed to investigate. They found an active Porsche bulletin for my vehicle, SY 828055 'Smoke and or a burnt odor from vents in the passenger compartment'. The service center did replace the passenger ac unit and this has not happened since. The attendant was clearly not trained on these bulletins as they kept denying anything could possibly be wrong with the car telling me 'we can't just take your car apart for a problem that happened once'. When this was in fact what needed to happen. A electric car that's 4 months old catching fire at 60mph on the highway is not normal. It's a major safety issue. If I hadn't lucked into turning the AC on I imagine this would have been a major fire on the freeway. Can you help bring this to Porsche's attention? I'm surprised this was not part of a recall.

NHTSA ODI 11692623