NHTSA Complaint #11633995 — 2018 SUBARU LEGACY

For context, we are the original owners of the 2018 Subaru Legacy car (leased in 2018, and then purchased outright in 2022). At the time of the incident, the car was in pristine condition. We had the oil changed in accordance with the maintenance agreement during the lease, and then every 6,000 miles or whenever the dealership called us to bring in the car. The car had 39,000 miles on it at the time of the incident and had an oil change as recently as 2.5 months prior. While stopped in traffic, the car began making a sputtering noise and all the lights on the dashboard turned on at the same time. When pushing on the gas the car began rolling down the hill towards the car behind me. I put the car into park and then turned it off, and then waved traffic to pass me. After reinserting the key into the ignition, the car began to make the sputtering noise again, but I was able to move the car very slowly onto the shoulder of the road. The greatest danger is that this occurred in moving traffic. Thankfully, there was no harm done to me or anyone else. I had the car towed to the nearest auto mechanic shop. Initially, the shop informed me it was an issue with the spark plug, but upon further investigation, they told me the problem was with the engine and asked me to bring it to the dealership. The dealership is unsure of the exact issue, but stated that it was engine failure (more details in screenshots below). The technician has stated that we will need to completely rebuild the engine to fully identify and fix the problem.