2014 Audi Q5: check engine light

Filed Mar 21, 2026 · Engine · CA

I am filing a safety complaint regarding a progressive engine defect. Beginning as early as 2019 (approximately 84,000 miles), I repeatedly reported excessive oil consumption and related engine concerns to authorized Audi dealerships. These complaints continued over several years. At no point was I informed that these symptoms could be associated with a known defect pattern or progressive engine failure. The condition has now escalated to a severe engine malfunction. The vehicle began exhibiting engine misfires, flashing check engine light, EPC warning, and unstable operation. The dealership confirmed misfire fault codes and oil contamination affecting the ignition system. Engine replacement was initially recommended. Excessive oil consumption leading to internal contamination and misfires presents a significant safety hazard. Loss of engine power or sudden failure while driving can create dangerous conditions, particularly at highway speeds or in traffic. Despite the long history of reported symptoms, Audi of America has declined to provide assistance, citing only warranty status and failing to address the defect progression. The vehicle has now been inoperable at an Audi dealership for approximately 60 days (nearly two months), with no resolution. This situation raises concerns regarding a safety-related defect, failure to disclose a known issue, and a potential broader pattern affecting similar vehicles equipped with this engine. I am requesting that this issue be reviewed for potential defect investigation. The dealer provided diagnostic findings with Failure Codes via a temporary link that is no longer accessible. I am requesting a copy of the full report and will upload this (once received), along with other documentation.

Filed Jun 29, 2024 · Engine · OH

Vehicle stopped while driving!!! Middle of the driving. Very dangerous. And it happened twice. With that as the headline, another known problem with this vehicle has been the engine oil needing to be filled literally every month. And time to time it resulted in “engine light” to come. So we kind of ended up in a “wolf cry” and really didn’t act. However, we did take care to Audi service for oil refill and they IGNORED to do the inspection on engine light well under 100,000 miles and 10yrs on warranty. So our recent car stopped when we were just about 2 months over 10yrs and 3,000 miles over 100,000 mile warranty Audi has for the problem needs repaired. Please help. Now Audi is saying we needed to pay almost $6,000 to get that repaired. Which they have seen for months prior to the 10yrs and 100,000. It’s really a unfair business practice.

Filed Feb 14, 2022 · Engine, Fuel system · CA

Check engine light on and diagnostic test shows particular matter sensor malfunction. This is apparently under recall, but my VIN is not included

Filed Jun 22, 2021 · Engine, Fuel system · CA

I am writing about an incident that happened to my wife while she was driving my car from Los Angeles, CA to Phoenix, AZ on June 16, 2021. My wife was driving the Audi Q5 at approximately 75mph and 125 miles west of Phoenix (near the CA/AZ border) when the car suddenly loss power. She stepped on the gas and noticed the speed gradually dropping. Fortunately, she had the presence of mind and barely had enough time to pull over to the shoulder. It was at this point that she called to tell me that the car would no longer start and the “check engine” and “EPC” light indicators were illuminated. This occurred at approximately 12:30 noon during a severe heatwave where the outside temperature was 117 degrees. I asked her to wait for 10 minutes to try to restart the car; the car would not restart. She called AAA Towing and was told the wait would be over one hour because of the rural location (Quartzsite, AZ). She ended up waiting a little over 3 hours in her car, without air conditioning, in 117 degrees for a tow truck driver to arrive. The car was towed to her sister’s house in Goodyear, AZ at a cost of $673. The next day, she had the car towed to the Audi Dealership in Peoria, AZ where it was diagnosed the car had suffered a fuel vapor lock due to the heat. The car has less than 28,000 miles on the odometer when the incident happened. Audi Peoria kept the car for a couple of days because the parts had to be ordered from Los Angeles. Ultimately, the repair bill from the dealership came to $1,983. I felt helpless and scared for my wife that I was not able to assist her as I was 3 hours away. What if my wife (or another driver) was unable to pull over to the side of the road? The chances of an accident are dramatically increased if the vehicle was stuck on the highway. As you can imagine, my wife has been traumatized by this incident and we are both fearful that this incident can happen again. Therefore, we request that the federal safety agency investigate this incident.

Filed Feb 24, 2021 · Engine · 53,600 miles · OH

After 53661 check engine light came on,after driving it it went off only to come back on and stay on. After taking it to the dealer "found timing chain stretched. Replaced timing chain and tensoner"

Filed Jan 22, 2020 · Engine · 64,683 miles · RI

Check engine light started coming on intermittently at 64683 miles. Car was taken to audi dealer to trouble shoot. Diagnosed as "cold start fuel performance fault caused by stretched timing belt." out side of warranty and class action law suit audi found at fault for earlier models for this.

Filed Nov 18, 2019 · Engine · 81,886 miles · NY

Tl* the contact owns a 2014 audi q5. While the vehicle was parked outside of the contact's residence, the check engine oil warning indicator illuminated when the vehicle was started. The contact stated that she needed to add oil to the engine every two weeks. The vehicle was taken to biener audi (located at 795 northern blvd, great neck, ny 11021, (516) 829-2834) three times. On october 13, 2019, the contact was informed that the piston sizes were too small and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified. The failure mileage was 81,886.