2018 Audi Q7 engine problems

Related recalls

No recalls on file.

What owners say

1. Filed Sep 12, 2026ILEngine

   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…

   NHTSA complaint #11763767 · source
2. Filed Jul 22, 2026VTEngine

   Start/stop malfunction failed; yes it is available for inspection. Driving down highway vehicle stopped with 2 adult passengers and 2 children. Yes 3 mechanics completed a diagnostic. Vehicle has not been inspected by insurance, manufacturer or police but by VW dealer, and two registered mechanics. No other warnings or symptoms.

   NHTSA complaint #11752232 · source
3. Filed Jul 1, 2026TXEngineFuel, Hybrid & EV Propulsion

   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…

   NHTSA complaint #11747856 · source
4. Filed Apr 13, 2026VAEngineOther / Unknown

   I am reporting suspected odometer fraud on my 2018 Audi Q7 3.0T Prestige (VIN: [XXX] ). Between May 8 and June 13, 2025, while I was the sole driver of the vehicle, Audi dealership service records show an odometer increase of 5,282 miles (from 78,260 to 83,542). However, independently verified GPS trip data from the Audi Connect system confirms I drove only approximately 2,103 miles during this period — a discrepancy of approximately 3,178 miles. The vehicle was serviced at…

   NHTSA complaint #11730885 · source
5. Filed Feb 9, 2026CAEngine

   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…

   NHTSA complaint #11716861 · source
6. Filed Nov 22, 2025NHEngine

   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

   NHTSA complaint #11700992 · source
7. Filed Nov 20, 2025PAEngine

   This vehicle developed low oil alerts within 6 weeks of me receiving it with normal city driving. Multiple testing visits and comprehensive consumption testing later, it continued to have the low oil alerts very frequently and various random malfunction alerts like parking brake alert etc. For each complaint I took it to the dealership and did whatever they recommended but no eventual resolution was found. Early October this year, in the middle of traffic multiple alerts…

   NHTSA complaint #11700557 · source
8. Filed Nov 19, 2025NJEngine

   Catastrophic engine failure, this occurred 2 weeks after a service appointment where nothing was detected. The car only had 86,000 miles and it is unrepairable. We have now found that this could be due to a design flaw in this model which we were unaware of.

   NHTSA complaint #11700458 · source
9. Filed Nov 18, 2025PAEngine

   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,…

   NHTSA complaint #11700218 · source
10. Filed Jul 10, 2025KSEngine

    #1 cylinder lost compression causing car to almost immediately stop while driving 78mph on the interstate. Car was towed back to manufacturer where i bought the car. The car 2018 audi q7 has 68,000 miles, all servicing of vehicle was done at dealership where i bought the car. Never any problems with engine except the occasional need for engine oil requiring being topped off.

    NHTSA complaint #11672505 · source
11. Filed Jun 21, 2025NVEngine

    This is a well known issue and multiple People have reported on this issue to Audi. It’s is very common in Audi Q7 models from the year 2017 - 2023 where the PCV valve have a defect and the marker on the front passenger and driver side lights as well are out. These are both very costly repairs that are thousands of dollars that truly hurt the consumer. They know that the 3.0 L engine had a severe problem with the PCV valve and crack case and they have not warned customers…

    NHTSA complaint #11668291 · source
12. Filed May 10, 2025NCElectrical SystemEngineTransmission & Drivetrain

    To Whom It May Concern, I am writing to formally report a serious and recurring safety issue involving my 2018 Audi Q7. The vehicle has experienced repeated drive system malfunctions that result in sudden loss of power, reduced acceleration, and warning messages on the dashboard such as “Drive System: Malfunction” and “Electrical System Failure.” These incidents have occurred while the vehicle was in motion, creating a hazardous situation for both the occupants and…

    NHTSA complaint #11660203 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology