2018 Audi Q7: excessive oil consumption

Filed Nov 7, 2026 · Engine · IL

Progressive oil consumption between late 2021 thru early 2026 with ultimate engine failure. Each year the vehicle required more non-routine oil "top offs". There was reportedly no visible oil under the hood so I reassured by the dealership that it was normal oil consumption for a European vehicle. I had not seen any oil on my garage floor or on my driveway. I was unaware that VW-Audi vehicle had an issue with excessive oil consumption and the dealership did not disclose it nor address my concerns with an oil consumption test. The vehicle seemed to run fine otherwise. In January of 2026, the vehicle chocked up driving no more than 20-25 miles per hour while I was on the expressway. I made it home without incident. The car is has not been drivable since this time. Independent inspection revealed piston and engine failure most likely due to excessive oil consumption.

Filed Sep 12, 2026 · Engine · IL

Vehicle began displaying low engine oil level warnings between scheduled oil changes beginning in 2021, at approximately 50,000 miles. Condition was reported to the authorized Audi dealer on multiple occasions. Dealer added oil each time and stated there was no visible oil leak. No oil consumption test was performed and no repair order documenting the concern was provided. Oil loss worsened progressively through 2024. Engine failed in January 2026 at approximately 101,000 miles. Estimated repair cost $18,000–$22,000.

Filed Jul 1, 2026 · Engine, Fuel system · TX

My 2018 Audi Q7 3.0T Quattro is experiencing extreme oil consumption — dropping from full to minimum level in approximately 230 miles. This is approximately 14x beyond Audi's own threshold for excessive oil consumption of 0.5 quarts per 1,000 miles. Documented timeline: May 2026 (88,692 miles): Oil change required 2.2 extra quarts beyond standard 7.2qt fill. Low oil light triggered during highway travel. June 27, 2026 (90,200 miles): Authorized Audi dealer formally documented "oil consumption is very high" in their service system and scheduled an official oil consumption test. June 28, 2026 (90,351 miles): Audi MMI system showed oil near minimum after only 151 miles. June 30, 2026 (90,397 miles): Audi MMI showed oil at Stage 2 warning after 197 miles. June 30, 2026 (90,430 miles): Audi MMI showed oil at minimum line after 230 miles total. All readings documented with timestamped photographs from Audi's own MMI system. The authorized Audi dealer has documented repeated oil top-offs in their service system. Audi USA Customer Care was contacted on June 30, 2026 and denied goodwill repair citing no active recall and vehicle out of warranty. An open case has been filed with Audi USA. The engine lubrication system appears defective. Oil dropping to minimum in under 230 miles without adequate warning poses serious safety risk of catastrophic engine failure while driving at highway speeds. The authorized Audi dealer has scheduled an official oil consumption test and inspection for July 2, 2026. Results will be available upon request. Vehicle is available for inspection upon request.

Filed Feb 9, 2026 · Engine · CA

The car has always (including during warranty period) required addition of engine oil in between scheduled maintenance interval, and problem got worse as function of age/miles. Audi has diagnosed this issue and it has been determined that the engine consumes excessive oil and requires new piston skirt. The cost of the labor is not something Audi is willing to pay for and there is a class action lawsuit. Audi has sent an email/letter to certain owners of the vehicle. My VIN for some reason wasn't included but now Audi has verified, but not willing to pay for the cost to replace the engine or fix it.

Filed Feb 4, 2026 · Engine · CA

Excessive oil consumption and potential for engine to blow up

Filed Dec 18, 2025 · Fuel system · PA

The crankcase ventilation valve is malfunctioning resulting in excessive oil consumption and unsafe idling. The Extended Warranty dated 5/24/19 with Number AWA-19-03 should be extended to other model years.

Filed Nov 22, 2025 · Engine · NH

2018 Audi Q7 piston melting diagnosed by a certified mechanic due to excessive oil consumption due to defective pistons. A class action suit was filed. And a warranty extension extension issued. There is no record of a warranty extension and should be. Please advise

Filed Nov 18, 2025 · Engine · PA

I am reporting a progressive oil consumption defect that led to a catastrophic engine failure in my 2018 Audi Q7. The vehicle was purchased Certified Pre-Owned (CPO). I reported the excessive oil use to an Audi dealer. The dealer attempted to address the issue by performing an engine cleaning/flush, but the engine failed shortly afterwards. Over time, the vehicle required frequent top-offs between service intervals. Eventually, the engine suffered a mechanical failure, resulting in a broken exhaust valve and internal engine damage while driving on the highway. The Audi dealer provided a repair estimate of approximately $12,000. Audi of America offered 40% assistance to make the repair, but does not recognize the underlying excessive oil consumption issue. Furthermore, the proposed repair only replaces the damaged valve and related components, but does not address the underlying excessive oil consumption that caused the failure. This means the vehicle may still: •unexpectedly run low on oil, •lose power while driving, •suffer additional internal damage, or •again experience sudden engine failure while driving. These conditions can cause dangerous drivability issues, including loss of acceleration and potential stalling at highway speeds. This appears to be a serious safety-related defect involving lubrication failure, component breakage, and potential loss of power. I am requesting that the federal safety agency review this issue to determine whether similar failures are occurring in other Audi Q7 vehicles with the 3.0T engine.

Filed May 3, 2025 · Engine · GA

The engine burns oil. At about 60k miles started to burn about a liter every 10k miles. Once the engine got to about 80K engines it started burning a leter about every 1K miles. The high amount of oil consumption fouled the spark plugs, coils, injectors and sensors. This resulted in a drive system malfunction, caused loss of power in the engine that ultimately ruined the engine with less than 100K miles.

Filed Apr 14, 2025 · Engine · IA

Engine Rebuild/Replace: Cylinder 1 intake valve has broken causing misfire/ oil consumption. Due to piece of valve falling into combustion chamber, damage/scoring on cylinder wall. Recommend replacement of engine

Filed Mar 13, 2025 · Engine · MA

For over 24+ months now, the engine has been showing signs of excessive oil consumption. I've had the engine light come on requesting for me to add a quart of oil...on average, every 2,000 miles. I'm concerned with this excessive oil consumption as it is a major safety issue, as the piston rings may fail due to a possible faulty engine design (most likely since this excessive oil consumption is a frequent occurrence with other drivers of this vehicle). When discussed with the dealership, they are aware of the situation (2017-2019 Audi Q7 excessive oil consumption) and they request that I pay for an engine compression test. This amount of oil consumption shouldn't happen.

Filed Jul 2, 2024 · Engine · OR

I have received two "cylinder misfire" notifications. The first occured in December 2023 on a remote stretch of freeway. The second occured in June 2024 on a remote stretch of highway. In both cases, I immediately lost power and put myself and cars around me at risk because I had to pull over onto the side of the road to re-start the car. After the second incident, I now have no confidence in taking my car, only 6 years old and with 74K miles on it, out of the city and into the countryside. The symptoms of this issue include frequent oil burn / oil top-offs. My car requires a quart of oil every 200-300 miles. There are no leaks in my driveway. The leaking all seems to be coming from the cylinders. I am taking my Q7 into a mechanic, again, next week and I am concerns the solution will be "new engine" which costs more than the car is worth.