2021 Audi Q8 Reliability Report

The engine (internal mechanical failure) malfunctioned. The vehicle developed a persistent ticking/knocking noise from the engine bay, and the authorized Audi dealer diagnosed the issue as requiring a full engine replacement. The vehicle is currently available for inspection upon request. A catastrophic engine failure presents a risk of sudden loss of power, stalling, or engine seizure, which could occur while driving at speed or in traffic. This creates a potential risk of loss of vehicle control, inability to accelerate, or being stranded in unsafe conditions, endangering both the driver and other motorists. The problem was confirmed by an authorized Audi dealership, which diagnosed the vehicle and stated that a complete engine replacement is required. The estimated repair cost provided by the dealer is approximately $26,000 (so far in parts only). The vehicle has been inspected and diagnosed by an authorized Audi dealership. At this time, it has not been inspected by police or insurance representatives. Audi corporate has been contacted for review. The primary symptom was a persistent ticking noise from the engine bay, which began around late December 2025 / early January 2026. There were no immediate warning lights or dashboard messages at the onset of the noise. The noise progressively worsened, prompting dealer inspection and diagnosis.

Subject: Spontaneous Sunroof Shattering – 2021 Audi Q8 Summary: On 8/5/2025, while driving my 2021 Audi Q8 under normal conditions, the sunroof suddenly shattered without warning. There was a loud popping sound, followed by glass breaking and falling onto the closed sunroof shade. There were no visible signs of impact from external objects, and weather conditions were normal at the time of the incident. The vehicle was not involved in a collision and was being operated safely. This incident created a serious safety hazard, as the loud popping sound once the sunroof ruptured could have cause me to get into an accident. I am also lucky that the sun roof shade was closed or the pieces could have struck me inside my vehicle. I will be contacting insurance and Audi dealership regarding the damage. However, after researching online, I found similar complaints from other Audi owners, suggesting this may be a recurring issue with panoramic sunroofs across multiple models. I am reporting this to the NHTSA because I believe this could indicate a potential defect in the sunroof glass or its installation. I request an investigation into this matter to ensure the safety of other drivers who may be at risk.

The contact owns a 2021 Audi Q8. The contact stated that while driving at an undisclosed speed in the rain, the automatic braking system sensors engaged. There was an abnormal sputtering sound coming from the vehicle. The driver believed that the vehicle had struck an object. The vehicle was taken back to the local dealer, who was unable to repair the sensor, and the failure recurred. The manufacturer was contacted and filed a claim. The approximate failure mileage was 8,600.

Took Audi Q8 in Jan 29 2024 do to 2 indicates one was a low oil, and a week before a Addaptive Lighting Warning came on my vehicle 2x , the following day to Warning light did NOT appear but the Blind Spot/Lane Assist lights did not operate. They were unable to resolve the issue Fault B200FF - TBS 2067531/2 Cleared fault but still do not work.

TL* THE CONTACT OWNS A 2021 AUDI Q8. THE CONTACT STATED WHILE STOPPED AT A RED LIGHT, HE LEANED FORWARD AND THE FRONT DRIVER'S SEAT BELT SHOULDER HARNESS TIGHTENED WHICH CAUSED HIM SHORTNESS OF BREATH AND CHEST PAIN. MEDICAL TREATMENT WAS LATER RECEIVED FOR HIS INJURIES. AUDI RANCHO MIRAGE (71265 CA-111, RANCHO MIRAGE, CA 92270) WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE SEAT BELT SHOULDER HARNESS TIGHTENED AS A PART OF THE SAFETY FEATURE OF THE VEHICLE. THE DEALER STATED THAT THEY WOULD VERIFY WHETHER OR NOT THE SAFETY FEATURE COULD BE DISABLED. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 1,500.