2015 Audi Q5

Vehicle failed inspection due to premature rust perforation damage of rear subframe caused by a plastic cover trapping water against the metal. Vehicle otherwise passed inspection.

The contact owns a 2015 Audi Q5. The contact stated that the rear subframe was extremely rusted and could not pass a safety inspection. The vehicle was driven to the dealer, but the vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 82,351.

The contact owns a 2015 Audi Q5 equipped with Firestone Tires, Tire Line: Firehawk A/S, Tire Size: P235/55/R19, DOT Number: 1RBE793E9. The tires were purchased in 2022. While the contact’s wife was driving at an undisclosed speed, there was an abnormal sound coming from the vehicle, and the rear driver’s side tire had a blowout. The contact's wife was able to pull over to the side of the road. The contact was unsure if the tire was replaced or if the vehicle was driven to the residence nearby with the blowout tire still on the vehicle. The vehicle was taken to a tire specialty shop, where the rear driver’s side tire was replaced. On another occasion, while the contact's wife was driving at an undisclosed speed, the driver heard an abnormal sound before rear passenger’s side tire had a blowout. No warning lights were illuminated. A passerby assisted the contact's wife in changing the tire. On another occasion, while the contact’s wife was driving at an undisclosed speed, the driver’s side front tire had a blowout. The contact changed the flat tire once the vehicle was driven back to the residence. Upon inspection, the contact noticed that the inside of the tire, where the bead of the tire meets the rim, was cracked. The contact noticed tire crazing all over the tire, and that the inside of the tires showed deep cracks. The contact stated that the other two tires showed the same failure. The tire manufacturer was made aware of the failure. The tire failure mileage was approximately 130,000. The vehicle failure mileage was unknown.

1.What component or system failed or malfunctioned, and is it available for inspection upon request? EPC light is on, car stalled on highway towed in Audi Dealership Jan/2023, On August 18, 2025 The vehicle experience catastrophic engine failure, electrical issues, coolant system defects,and currently inoperable and safety risk. 2.How was your safety or safety of others put at risk? vehicle stalled on street potentially public safety risk. 3.Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, Audi dealership service center recommendation buy $22,000 for brand new engine . 4.Has the vehicle or component been inspected by manufacturer, police, insurance representatives or others? Inspected by Audi Dealership Service Center, and State Farm claims representative. 5.Were there any warning lamps, message or other systems of the problem prior to the failure, and when they first appear? When did first appeared a problem EPC light goes off and on January 17, 2023, loss of engine power, oil/coolant leaks, and etc.

Engine consumed a quarter of oil every 300 miles. The EPC light and engine light illuminated. The vehicle went into limp mode. I had the vehicle towed to a certified mechanic.Vehicle was inspected by a certified mechanic and will need a new engine. Engine only has 85,000 miles and oil was changed every 5000 miles.

The cooling system failed without warning! As I’m driving on the highway my vehicle began smoking! I smelled a burnt smell! Upon getting off the highway , I noticed my coolant had leaked almost completely out! I check my vehicle every morning before work as I drive through three counties to get to work and my coolant was full as I had just topped it off that morning! Upon inspection it was found from a local mechanic to be the water pump! My truck was fine last month upon getting a n inspection.

i have had necessary service checks; however, the spark plugs keep getting burned out. the car is barley 10 yrs old i have replaced the spark plugs 4 times this year alone. Its like every 2 months for the last year. this is abnormal

Rear subframe rusted out at only 85,000 miles

2015 Audi Q5 Quattro (all wheel drive). During recent inspection the vehicle was found to have extreme corrosion, cracking, and structural failure of the rear subframe and subframe crossmember. The rear steel subframe is manufactured as an assembly. The rear subframe assembly supports all of the rear suspension components and rear drivetrain and drivetrain components. My vehicle is always garaged and no other corrosion was found during inspection of the entire vehicle. The finding is a manufacturing defect that is only isolated to the rear subframe assembly of the vehicle. Due to the extreme nature of corrosion and cracking found on the subframe assembly this should be considered a high priority warning for Audi Q5 owners. A total failure of all rear suspension and drivetrain components may result.

Vehicle: 2015 Audi Q5 2.0T VIN: [XXX] At around 70,000 miles, my vehicle began consuming engine oil abnormally. I received a low-oil warning and had to add 1 quart every 1,000 miles. I first approached an authorized Audi dealer at 75,000 miles, who inspected the vehicle and stated this was “normal for older vehicles” and found no issues. However, the problem worsened rapidly. By 79,000 miles, I visited a second Audi dealer who acknowledged that this was a common problem in this engine type. They quoted me $16,000–$20,000 for a full engine replacement, stating they could not replace pistons alone. At 80,000 miles, my car now consumes 1 quart of oil every 200 miles. The oil warning light comes on frequently. I am forced to carry oil and top off multiple times per week. This is not normal wear for a luxury vehicle with regular maintenance. This condition creates multiple safety risks: •Sudden engine seizure or power loss if oil runs too low, especially while driving at highway speeds. •Loss of steering/brake assist due to oil pressure failure. •Increased fire risk from leaks or overheating. •Frequent roadside stops to add oil, risking exposure to traffic. •Distraction while driving due to monitoring oil levels. •Environmental hazard from oil spills. The engine remains available for inspection. The vehicle has only been inspected by Audi dealerships. Audi should be held accountable for a defect that compromises safety and reliability at relatively low mileage. I urge NHTSA to investigate and take appropriate action. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

System does no longer work. Audi Montgomery inspected the vehicle and deamed that both side blind spot warning components have failed. People come to trust the system and when it fails they would lane change, not be warned and cause an accident. Dealer comfirmed failed components. Opened a concern with Audi USA and was told I am responsible for repairing the failed system. 6/19/2025.

To Whom It May Concern, I am writing to formally report a serious safety issue involving my 2015 Audi Q5 TDI (VIN # [XXX] ), which has developed severe corrosion on the rear subframe. I am the original owner of this vehicle, which has 92,700 miles and has been garage-kept and exclusively serviced by authorized Audi dealerships since purchase. On [XXX], following a failed Virginia State safety inspection, the vehicle was inspected by Audi of Chantilly, VA. Their service department confirmed that the rear subframe is cracked due to extensive rust and recommended immediate repair. I have attached both the inspection report and supporting photographs. This is not an isolated case. Numerous Audi Q5 owners have documented similar corrosion on the rear subframe, often attributed to a plastic cover that traps moisture and accelerates rusting. This appears to be a design defect with potentially dangerous implications. As it stands, the vehicle is not drivable. The compromised subframe poses a serious risk of structural failure while in motion, increasing the potential for loss of control, a crash, or injury. The dealership has estimated repairs at over $9,000, which I am currently seeking coverage for through Audi Customer Service. However, Audi has indicated that their corrosion warranty covers only body panels—not subframe components—despite the fact that the defect stems from their design. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)