2018 Audi Q3 Engine Problems

On 5/18/2026 my wife left home to run an errand in our newly purchased 2018 Audi Q3. About 1-2 miles away from home, she experienced a strange sound coming from the engine bay, the car lost accelerating power, and the car displayed a warning message that the oil pressure was low and to stop operating the car. The power briefly returned, and she was able to safely return home. Thankfully, she hadn't gotten onto the highway, where the power loss could have caused loss of control of the car resulting in a crash that could have harmed her or others, perhaps fatally. After she returned, I used a consumer-level reader to get the code, which indicated there was catastrophic failure to one of the engine's cylinders. We had it towed to a nearby Audi dealership, where the service department confirmed one of the cylinders had failed and the car needed a new engine. The car had given numerous signals prior to this. First, the night we purchased the car, we experienced the exact same warning light and loss of power. We had it towed then to the same Audi dealership, who said it only needed an oil change. During that conversation, the Audi tech told me that the car had a head gasket replacement the prior year (2025), at around 55k mi, and that the previous owner reported other oil-related warnings. I was then told the oil sensors are sensitive, the car was fine, just be mindful of oil levels. In the proceeding weeks after that (and prior to the engine failure), we experienced moments when the same oil pressure warning flickered on-and-off. The failure on 5/18 was less than 45 days after our first indicator experience.

The contact owns a 2018 Audi Q3. The contact stated while driving at an undisclosed speed, the vehicle stalled with the check engine warning light illuminated. The vehicle was restarted; however, the failure recurred. The vehicle was taken to an independent mechanic where it was diagnosed as a failure with the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The vehicle was taken to the dealer where it was diagnosed as a carbon build-up in the engine. The contact was informed that the engine needed to be repaired. The vehicle was not repaired. The manufacturer was made aware of the failure The failure mileage was approximately 42,000.

My daughter was driving with her brother and a friend and stopped at an intersection on red signal. The car stopped and would not start. Definitely the safety of the passengers and the people behind were put at risk because of stalled car due to engine failure at a busy intersection. It is a 2018 model and followed the Audi's recommended maintenance schedule. Check engine light was on few days before and diagnosed to be a failure of a sensor by an independent service center and was waiting to get the part. After the incident the car was towed to the dealership and they have diagnosed to be low engine compression and needs engine replacement.

The vehicle is burning and consuming too much oil too quickly between oil changes. Oil pressure light keeps turning off and on even when there is oil. Vehicle has been serviced and worked on by Audi dealership. Currently vehicle is at Audi for exact same issues after Audi claimed to fix it. Vehicle had to be taken back to the dealer for repairs within 30 minutes after picking up the vehicle from dealership for the same light. Paid $2300 for the first time I took the car in for repairs and I had to take it back cause nothing was fixed

The contact owns a 2018 Audi Q3. The contact stated while driving 45 MPH, the vehicle lost motive power and stalled without warning. The contact was assisted by a Police Officer to move the vehicle out of the roadway. The vehicle was towed to the local dealer to be diagnosed but was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 9,600.