2017 Audi Q7: engine failure

Filed Jan 22, 2026 · Engine · OH

Car has a burnt cylinder from excessive oil consumption due to poor piston ring design. These engines are prone to failure to do carbon buildup on the cylinders which leads to poor PCV performance to exacerbate the problem. Audi dealership has confirmed my cylinder 3 has a burnt valve and requires a new engine.

Filed Jan 5, 2026 · Engine, Transmission · CA

Catastrophic Engine failure while driving on highway with family. System gave error codes DTC P054A, DTC P0301, DTC P0017. Vehicle was not drivable. Always serviced with oil and filter change at recommended service intervals at authorized Audi dealer. Never showed any signs of malfunction or warning lamps prior to this incidence. Brought it to a mechanic specializing in European cars and diagnosis was the Engine has failed completely and needs new engine.

Filed Sep 9, 2025 · Engine, Fuel system · TN

My 2017 Audi Q7 Prestige 3.0T 6Cyl GAS CREC Supercharged has experienced repeated, serious failures involving the engine, powertrain, and fuel system. - At 72,000 miles, the vehicle developed coolant leaks under the supercharger, a failed water pump, and soaked drive belts. Repairs included multiple hoses, gaskets, and thermostat replacement. -Shortly after, repeated PCV/Oil system failures caused oil leaks, warning lights, and engine shaking. Repairs included PCV system, oil separator, valve cover gasket, breather pipes, and new spark plugs. - at 111,000 miles, the low-pressure fuel pump and relay failed, causing the vehicle to stall and lose all power while driving- a major safety risk. -Most recently, the engine developed a severe misfire in cylinder #4. Compression testing confirmed abnormally low compression (15 psi) due to a suspected cracked valve seat. The vehicle cannot be repaired without a complete engine replacement, quoted at ~$20,000. Safety Impact: - Vehicle has stalled suddenly in traffic due to fuel and engine failures, risking crash or injury. - Coolant and oil leaks present a potential fire hazard. - Loss of power and shaking while driving put my family and others at risk. Inspection/Confirmation: -All problems have been repeatedly confirmed and repaired by an independent Audi specialty service center (S&S Auto Repair). - Numerous invoices document coolant, oil, fuel, and engine failures. Warning Signs: - Multiple dashboard warning lights appeared either right before or during failure, including engine malfunction, coolant loss, and auto start/stop malfunction. These repeated failures at relatively low mileage suggest a design/manufacturing defect with the Audi 3.0T engine platform that compromises both safety and reliability. The issue seems to be widespread amongst other Audi owners with the same 3.0T engine- Per AudiWorld Forums.

Filed Apr 1, 2025 · Engine · NC

My engine just failed after over a year of having to put oil in. The car has 77K miles and has been regularly maintained. Audi used this as a "demo car" and after purchase we immediately had to put oil in and were told verbally this is not an issue. The excessive engine oil consumption caused this catastrophic engine failure our an independent and trusted mechanic reports the engine has failed and cylinder number five only has 30 pounds of pressure. Please advise on what I can do with Audi for repair. We also have a 2019 and are fearful this will happen to that car as well. Thank you.

Filed Jan 14, 2025 · Engine · OR

Drive system malfunction warning while driving on the highway at 75 mph and the car began sputtering, lugging, jerking and had to be manually shifted to get it safely off the highway. If we had been in traffic we would have been rear ended as the car drastically lost speed on the highway. Dealership initial diagnosis was a misfire in cylinder 4. Upon further inspection we were told that a piece of the exhaust manifold had broken off resulting in catastrophic engine failure and we needed to replace the long block at a quote of $32,000. Car had been serviced only at the Audi dealer and all Audi care maintenance had been completed. We had informed the dealer that the car was burning oil on two previous service visits and we were adding a quart every 1000 miles or so and we were told that was normal for a 2017 Q7 with over 80,000 miles on it. Last service inspection and Audi care package in September 2024 we were told the car was in great shape. Catastrophic engine failure in December 2024.

Filed May 20, 2023 · Engine · MI

Car issued an alert for Low Coolant, I checked next morning only to find that the coolant tank was empty. This warning could have alerted long back when the level fell below "Min" marker. Owners cannot notice this leak because the coolant doesn't drip on the floor. Took it to an independent service center who alerted me about this issue. I researched and noticed that there's been a lot of complaints on forums for 2017 Audi Q7 3.0 for coolant leak cause by the water pump, which always needs replacement. The replacement costs by AUDI are upwards of US $1300. This issue seems like a regular pattern and can cause an engine failure. AUDI should take responsibility and fix these cars.

Filed Jul 15, 2022 · Engine · MD

Purchased 2017 Q7 sometime back in August of 2019. the car had about 42k miles on it as it was a used CPO car. After purchase the car was driven around 8900 miles suddenly the warning sign and sound occurs to warned to add engine oil. This is not supposed to happen as the car can drive up to 10k miles in single oil change. Went to the dealer right away & they blame on the tech saying " he must have not added enough oil my mistake. 2nd, 3rd, 4th, 5th,6th time I experienced the issue I reported them and they always came back something related my driving style, or behavior that is causing the issue and nothing at their fault. They always says something to avoid to look further to the problem or to avoid/admitted their mistake ( Manufacture). I didn't even realize that they are probably trying to push the car mileage out of factory warranty as well. than I got the warning came in below 6k miles and seeing very high oil consumption ratio but by than my car has close to 111k miles on it - I had to show my research result of on going Audi oil consumption cases for different model than the took the car and ran some test and found out that my car burns 1.52 litter of engine oil in every 1000 miles that it runs back then. Audi tech recommended engine replacement or piston ring replacement. Now my car burns so much engine oil that every 580 miles I need to add a QT of oil to keep driving. Talked to Audi customer service, the dealer service managers and they all saying that the car has high mileage but there are lots of Audi car has the same issue though they cant help me since my car has high mileage. I feel like this is Audi's manufactural issues to begin with to build a car with poor quality piston head and piston rings. the cylinder can bust and catch file, or piston can brake while driving also burns so much oil that it sure pollute the air - there are 100's of thousands of Audi with same problem to produce enough CO@ that we can avoid by holding them accountable.

Filed Nov 3, 2021 · Engine · IL

At 35,400 miles, the car indicated low coolant via dash message. Audi dealer then diagnosed as a leaking water pump that requires replacement. Continued driving could have led to complete engine failure, since the engine would overheat and be destroyed by a lack of coolant. This type of water pump failure should never happen at such low mileage, yet this is a common problem with Audi models. I had to pay out of pocket for repairs.