2017 Audi Q7: engine overheating

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 Feb 4, 2024 · VA

There is a known oil consumption problem. And I have experienced having to fill up my oil every 200 miles. There is no proof of an oil leak but it just uses it constantly. It has left my car overheating in two cities with my toddlers.

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 Jan 14, 2023 · Engine · IA

Engine coolant leak due requiring a water pump and thermostat replacement. Vehicle has 53,621 miles.

Filed Feb 13, 2022 · Engine · OH

The water pump, thermostat housing, thermostat, and coolant crossover pipe were replaced to address a coolant leak issue. This was a repair done outside of the warranty at a cost of $2025. The mileage on the car was 65893.

Filed Nov 9, 2021 · VA

Failed water pump at 67,000 miles. The vehicle started with a slow leak and coolant smell, but escalated to losing one liter of coolant each day in about a month. Potential for overheating and fires.

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.

Filed Sep 28, 2021 · Engine · WA

Water pump failed at 42,xxx miles, well below the 50,000 mile warranty of the vehicle. Totally unacceptable for this type of luxury SUV and no support from Audi or my local dealer to cover any of the nearly $1500 charges to replace the water pump and refill / test the system with coolant. If the car wasn't in my garage at home, I could have been left stranded several hundred miles from any type of service or repairs. This is a common problem with other previous Audi SUVs and there should be an extended warranty for these repairs, something the manufacturer didn't build the car right to save a few dollars and leaving Owners to foot the high repair bills and deal with being stranded. If this would have happened while driving on the highway, my engine could have overheated and caught fire or caused a high-speed accident, possibly injuring me, my family, and others. The vehicle has been repaired by the Audi dealer but at a very high cost. There were no warning lamps, messages or other symptoms of the problem prior to the failure.

Filed Jun 9, 2021 · GA

Premature Water Pump Failure. I took our 2017 Audi Q7 into the dealer for a 60k mi service. The vehicle has been serviced as recommended by Audi at the dealership at every interval. On this visit everything looked normal but they discovered a leak in the water pump. Quoted a $2100 repair. We are out of warranty. Talking to other Audi Q7 owners, many have had premature water pump failures. Some were covered by warranty, others not. The Water Pump is an essential component and if it fails, it could leave the driver and occupants stranded due to an overheated engine.