2018 Audi Q5

Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi Q5 and SQ5 vehicles. The brake master cylinder casting may be too short.

Consequence: A short casting can cause a sudden loss of brakes, increasing the risk of crash. The electronic parking brake and its emergency brake function are not affected and will still function.

Remedy: Audi has notified owners, and dealers will inspect the brake master cylinder, replacing it as necessary, free of charge. The recall began May 3, 2019. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 47O9.

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Component: SEAT BELTS:PRETENSIONER

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2017 Audi A7, A4, A6, Volkswagen Golf and Tiguan vehicles and 2016 Volkswagen e-Golf vehicles for driver frontal air bags, passenger frontal air bags or head air bags that may not deploy properly. Additionally, certain 2017 Audi Q7, A4 Sedan, A4 Allroad, and 2018 Audi Q5 vehicles are being recalled because the seat belt pretensioners may not activate properly.

Consequence: In the event of a crash, if the air bags and/or the seat belt pretensioners do not inflate or function properly, the vehicle occupants have an increased risk of injury.

Remedy: Volkswagen and Audi will notify owners, and dealers will replace the affected air bags and seat belt pretensioners, free of charge. The recall began April 2017. Owners may contact Volkswagen customer service at 1-800-893-5298 or Audi customer service at 1-800-253-2834.

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Component: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM

Volkswagen Group of America, Inc. (Audi) is recalling certain 2021-2022 Q5 Sportback, SQ5 Sportback, 2018-2022 Q5, and SQ5 vehicles. A liquid spill in the rear seat, or water ingress from an insufficient body seam underneath the vehicle may allow liquid to penetrate the gateway control module, causing it to shutdown.

Consequence: A gateway control module shutdown will suddenly reduce engine power, increasing the risk of a crash.

Remedy: Dealers will install a protective cover on the gateway control module and seal an underbody seam as necessary, free of charge. Owner notification letters were mailed January 21, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90S9.

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The rear view camera is not operating when shifting to reverse. I can demonstrate this malfunction at any time to anyone. Driver is unable to detect short objects or small children directly behind the vehicle. The problem was confirmed by the dealer during a service visit. At that time, the service technician checked power and ground to the control unit and verified good. Attempted calibration for camera, vehicle would not calibrate. The vehicle has not been inspected by any other agencies. There were no warning messages, or lamps or any other symptoms prior to the failure.

The Seat Occupancy Detection System is malfunctioning. The passenger airbag warning light activates when a passenger occupies the passenger seat and the passenger overhead reading light remains on when the seat is occupied including overnight. These are established symptoms of Seat Occupancy Detection System failure. The manufacturer issued a warranty extension specifically covering this defect for 10 years and unlimited miles. When the vehicle was presented at an authorized dealer for diagnosis and repair under the warranty extension, the service advisor deliberately omitted the airbag warning light symptom from the repair order and inserted pre-emptive warranty denial language before any diagnosis was performed. The airbag system malfunction remains unrepaired despite an active manufacturer warranty extension covering this exact defect. The dealer’s failure to properly document and address an airbag warning light constitutes a safety concern that NHTSA should investigate.

Problem with Brake booster servo issue comes on the dash then goes away. Brakes are spongy and brake pedal makes a swooshing sound when pressed

I am submitting this complaint to report a safety defect involving a 2018 Audi Q5 (Premium Plus, Technology Package). The vehicle’s MMI infotainment/navigation system intermittently shuts down or reboots during operation. When this occurs while the vehicle is in in reverse, the rearview camera display immediately goes blank and remains unavailable until the system completes its reboot cycle. This failure has occurred during active reversing maneuvers, creating a significant safety concern. An incident already occurred that resulted in an impact to another object during backing and the camera display/MMI going blank loss just prior to stopping. The rearview camera is a required safety system under Federal Motor Vehicle Safety Standard No. 111. When the system powers off unexpectedly, the driver loses critical rear visibility information at precisely the moment it is most needed. The condition appears to be software-related, as the infotainment system restarts on its own. However, the temporary loss of the camera display increases the risk of collision with pedestrians, other vehicles, or stationary objects. I understand that recalls have been issued for similar rearview camera display failures in later model-year Audi Q5 vehicles. The symptoms I am experiencing are materially similar and may indicate a broader defect pattern affecting earlier production years. I have attempted to resolve the issue with Audi and their technicians and service management. The conclusion was they could not find any error messages or mechanical issues. They would not diagnose deeper or complete any further trouble shooting. The previous owner also attempted to resolve the safety defect under warranty and received similar attention with no solution. I respectfully request that NHTSA review this matter for potential investigation to determine whether the 2018 Audi Q5 should be included in any safety-related corrective action. Of note, the "CarPlay" use is not the cause.

Yellow warning light..drive system malfunction. Red warning light..low oil pressure at idle. Says stop engine..after engine restart lights go off and is fine.. for a little bit.

The front subframe on the vehicle is severely rusted and corroded through rust. Part of it has fallen off, and the rest of it is badly damaged. A structural integrity, a major safety risk. The Audi Dealer inspected it and confirmed. The car is unsafe to drive.

Unpublished costly catastropic electrical failure Audi of America reviewed the case and declined assistance solely because the vehicle was already totaled and unavailable for dealer inspection. Audi did not dispute the presence of water intrusion, the technical findings, or the cause of failure. This failure occurred without warning under ordinary environmental conditions and resulted in sudden loss of vehicle function. I am submitting this complaint to document a potential defect related to the protection and placement of electronic systems vulnerable to water exposure. I am submitting this complaint to report a potential safety-related defect involving water intrusion and catastrophic electrical failure in a 2018 Audi S5. After a heavy rain event with no roadway flooding or submersion, my vehicle experienced complete electrical failure and would not start. Inspection revealed water intrusion into the trunk area where critical electronic components—including the battery and electronic control modules—are located. The damage was extensive and rendered the vehicle inoperable, resulting in a total loss determination. Attached documentation includes photographs, video evidence, and a technical inspection summary prepared by an independent automotive service facility and reviewed in consultation with Audi-trained technicians. The findings indicate water intrusion consistent with design vulnerability rather than misuse or lack of maintenance.

Vehicle: 2018 Audi Q5 Prestige Mileage: Approximately 34,000 miles On December 14, 2024, while driving at normal road speeds, my vehicle suddenly lost power and displayed multiple warning messages, including drivetrain and system malfunction alerts. The vehicle became unstable and unsafe to operate while I was in traffic, forcing me to carefully maneuver off the roadway. This occurred without any prior warning or abnormal engine behavior, it was just so sudden. I brought the vehicle to an authorized Audi dealership the following day. After inspection, the dealership diagnosed a catastrophic internal engine failure, identifying a cracked/chipped valve in cylinder 3. The dealership technicians and service staff stated that this type of failure is extremely rare on a vehicle with such low mileage and normal maintenance history. They also indicated that they had not encountered this type of valve failure on a similarly maintained Audi vehicle at this mileage. There was no evidence of carbon buildup or abuse, and no external contributing factors were identified. The failure resulted in sudden engine malfunction and loss of drivability while the vehicle was in motion, creating a significant safety risk. The dealership recommended replacing the engine cylinder head, with an estimated repair cost approximately $9,100. The dealership could not confirm whether debris from the damaged valve remained in the engine or whether the repair would fully mitigate future safety risks. I am submitting this complaint due to concerns that this failure represents a potential manufacturing or materials defect that can lead to sudden engine malfunction or loss of power while driving, posing a safety hazard to vehicle occupants and other road users.

On 10/27/25 as I was slowly pulling into a parking space, my Audi Q5 lurched forward and jumped the curb crashing into a tree. Happened too quickly to apply the brakes. No warning indications at the time of the incident. Car would not start and had to be towed to a repair shop. The insurance adjuster is evaluating the damage, probably the vehicle will be totaled. Luckily the tree stopped the car and nobody was in in front as the car jumped the curb.

The contact owns a 2018 Audi Q5. The contact stated that while the vehicle was parked with her son was in the car seat, the rear driver’s side seat lap band was twisted and was stuck around his waist. The contact stated that the seat belt failed to retract, and the contact had to cut the seat belt with a pair of scissors. The contact stated that the child had a bruise on his lower stomach near his hip however, medical attention was not needed. A Police report was not filed. The vehicle was taken to a dealer, and it was determined that the seat belt needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 60,000.

Car displayed a warning sign that safety system malfunctioned. Airbag indicator showed “passenger airbag off”. This error occurred sporadically and for a limited amount of time. It also kept sensing that passenger seat was occupied when it wasn’t. From what I understand , the issue is related to passenger side PODS sensor.

Rear coil springs broke. No heavy duty cycle. 46,000 miles. Spring retention pads dislocated and destroyed. Powder coat anti rust prevention in 90% good shape. No reason for coil springs to break other than assembly defect or supplier material defect.

My car randomly rebooting while driving. The whole MMI goes down