2017 Audi Q7: engine stalls while driving

Filed Jul 31, 2026 · Electrical, Engine · CA

My 2017 Audi Q7 with the 3.0T engine has experienced repeated engine/ignition system failures. The vehicle displays a "System Malfunction" warning light accompanied by shaking and stalling. This same malfunction has occurred at least 3 separate times over the past few years. Each time, a repair shop diagnosed and replaced faulty ignition coils, and the vehicle ran normally for a period of time before the identical malfunction returned. The vehicle is currently inoperable due to the most recent occurrence. This creates a safety risk because the stalling and shaking can occur while driving, with no clear warning beyond the malfunction light appearing at the same time as the symptoms begin. A stall or loss of power while in motion, especially in traffic or on a highway, could lead to a collision. The problem has been confirmed and repaired multiple times by an independent European auto repair specialist, who stated this is a known, recurring issue with this engine/model. The vehicle has not yet been inspected by the manufacturer directly. Separately, the vehicle has also developed excessive oil consumption, requiring approximately 2 gallons of oil added roughly every 6 weeks, with the frequency increasing over the last 2 months. I am uncertain whether the oil consumption and the recurring coil/ignition failures share a common root cause, but both issues are ongoing and unresolved. The vehicle and its components are available for inspection upon request.

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 Mar 27, 2025 · Engine, Fuel system · GA

I am reporting a serious issue with the 2017 Audi Q7 involving excessive oil consumption. The vehicle burns 1 quart of oil every 1,000 miles or less, requiring me to constantly add oil between regular oil changes to avoid engine damage. This is not normal and poses a serious safety risk if the engine runs dry during operation. Audi denied my buyback request without inspecting the vehicle or reviewing service records. Instead, their solution has been to provide free oil top-offs, which proves they are aware of the problem but are avoiding a permanent fix or recall. Other Audi Q7 owners, even with newer models and low mileage, report the same defect. This is a manufacturing defect that makes the vehicle unreliable and unsafe for normal driving. This can cause the vehicle to stall or stop suddenly while driving, especially at high speeds or in traffic. That’s a major safety risk. If the oil burns too quickly, the warning may come too late. The need to constantly monitor and add oil makes the car unreliable for everyday use. Regular oil changes are meant to keep the car safe and working smoothly. But if oil is burning quickly between changes, the car can’t be safely operated on a normal maintenance schedule, which defeats the purpose of service intervals and puts extra responsibility and risk on the driver. Audi’s refusal to issue a recall or perform proper repairs is deceptive and dangerous. I request the federal safety agency to investigate this issue and determine whether a recall is necessary for this known defect. It also breaches Implied Warranty of Merchantability (UCC § 2-314)

Filed Jun 13, 2023 · Electrical, Lights · NY

When driving into a dimly lit area the car rings and displays the message front left side marker defective. The warning stays on for some time and then goes away before returning again. This continued for a few weeks. The car then experienced a full electrical system malfunction, doors unlocking and locking randomly while driving before dinging repeatedly with multiple warnings displayed in the dash and then stalled in the middle of the road. The vehicle would not shift into park. Multiple warnings continued to ding and flash in the dash. After being turned off for 20 minutes the car was able to be started shifted into Drive and driven with no warnings displayed. The car was taken to the dealership for diagnostics which were performed, but with no electrical system malfunction displayed. The left side marker warning was still on, but the dealer said there was no fix for this. The following month the car was taken for 60,000 mile service. At this time the dealer advised the fix for left side market was replacing the entire headlamp fixture. The service was declined. When the vehicle left the dealer the cruise control was on and would not turn off. After turning off the car and turning it back on the cruise control was off. After driving a short distance the speed control warning dinged and displayed and the cruise control was back on. The orange engine light was also displayed although there was no written warning for this.

Filed Dec 18, 2017 · Electrical, Engine · 30,000 miles · OK

Tl* the contact owns a 2017 audi q7. While the vehicle was stopped at a red light or stop sign, it stalled and shut off. The contact had to push the start button for the vehicle to return to normal. When the contact came to a stop, the failure recurred. The contact stated that the failure became more consistent. The contact had not taken the vehicle to a certified mechanic or dealer. The vehicle was not diagnosed or repaired. The approximate failure mileage was 30,000.