Table 1 shows one common power train related problems of the 2013 Audi Q7.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
On July 20, 2026, I was driving northbound on us-101 from ventura to santa barbara to pick up a family member for an appointment. The vehicle had been operating normally at freeway speed. As traffic slowed for a construction zone near summerland, I intentionally reduced speed to approximately 20 mph. At that point, I heard a sudden abnormal rotational mechanical noise from the engine compartment, best described as a flapping or rubbing sound. The noise had not been present earlier during the drive. Within moments, the engine lost power and shut down. The vehicle lost propulsion while in traffic, and power steering assist was lost after the engine stopped. I was able to safely maneuver the vehicle off the roadway. The engine would not restart. Before this incident, I did not observe any meaningful warning of an impending catastrophic engine failure. I did not observe an engine overheating warning, an oil-pressure warning, or any other dashboard warning indicating an imminent engine seizure. Before purchasing the vehicle, and during my ownership, I used ross-tech vcds (Audi/vw-specific diagnostic software) as part of proactive maintenance and monitoring. Nothing identified an impending catastrophic engine failure. The vehicle was transported to an independent european repair facility for inspection. The shop determined that the engine is mechanically seized and advised that the precise initiating cause cannot be determined without engine disassembly. An Audi dealership likewise indicated that additional manufacturer-level diagnostic procedures would be required. A case was created, and Audi declined assistance. I am submitting this complaint because the engine failed suddenly during normal operation without a meaningful advance warning, resulting in an immediate loss of propulsion in traffic. I believe this type of unexpected catastrophic engine failure presents a potential safety concern if it occurs while the vehicle is being operated on a public roadway.
First thing is fuel smell in cabin very dangerous for me as well as any passengers next is transmission there is no way telling how much fluid is in the vehicle that should be monitored by the consumer they have a right to know front & rear axles seem to get worn quickly must be a problem in the drivetrain somewhere.
The vehicle has performed poorly after completing a us department of justice mandated "fix" of diesel (3. 0 liter tdi, engine code cnrb) emissions equipment related to vw/Audi emissions cheating. There is now sporadic lag in acceleration, especially at low speeds, or accelerating from a complete stop. There were times when I have pulled into oncoming traffic, and the power delivery was non-existent, followed by, after a 1 second delay, rapid over acceleration. There have also been many problems related to the reductant metering module failure that has caused dangerous delays and lags in acceleration.
Within 300 miles of the diesel recall modification the engine lost power at 70 mph and slowly drifted to lower speed. Additionally the transmission did not respond to manual shift to a lower gear (it stayed in 8th). After stopping the car and turning it off a "reset accoured" and the car operated normally for another 300 miles. The car again lost power and the transmission did not respond to manual shift to a lower gear. The car was taken to Audi and they "cleaned" the erg valve. The loss of power and lack of transmission accrued again at about 300 ,450 and 600 miles past the event of Audi working on the ergt. All of these events have taken place at interstate speeds and when the car is being operated on trips in excess of 300 miles.