Which parts fail
Components named in complaints (automatic emergency braking, adaptive cruise, lane keeping, backup camera).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2018 Audi Q5 owners, lightly cleaned up (personal details are redacted by NHTSA).
This was unintentional acceleration case: When I got into the parking space, the car was almost stopped and I was about to press the park button (gear) and the car suddenly accelerated and in a fraction of a second, climbed the curb, crashed into the fence, broke the fence and crushed on a tree. I was still applying brake to stop it and I could not do anything else. The following facts show that the acceleration was totally out of my control. 1.vehicle climbed the curb 2. and climbed the dirt part, shrubs 3. to hit the fence and broke it; It looked like something mall functioned. As a matter of fact, no safety feature worked and no sound signals went on ! Even vehicle's collision system did not kick in when car was climbing over the curb. Fortunately, I could get out of that car and my body was aching due to the seat belt and airbag explosion. (Driver side bag exploded for sure. …
The contact owns a 2019 Audi Q5. The contact stated that while driving at an undisclosed speed, with no other vehicles or objects nearby, the Forward Collision Avoidance system unintendedly activated. The contact stated that within seconds, the Forward Collision Avoidance: Automatic Emergency Braking system engaged, greatly reducing the speed before returning to normal functionality. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to diagnose the failure with Forward Collision Avoidance system. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 60,000.
I was trying to park my car in my office parking space, after right turn to parking space, I applied brake to stop, but the car suddenly accelerated and within few seconds it crashed into the office building. I was still applying brake when it accelerated and I could not do anything else. The fact that vehicle climbed two levels of curbs to hit the building shows that the acceleration was out of my control. And even vehicle's collision system did not kick in when car was climbed over the curb. Polic report #: 22-350-0239C Agency: SCCSO
Safety System Malfunction message appears on dash. Passenger side air bag goes on and off while driving. Whole system chimes and random messages flashing on screen constantly. At times system doesn't recognize that I have my drivers side seatbelt buckled. So system keeps chiming cars Stanton. Random messages flash on dash. Traffic jam assist (3 cars symbol) unavailable and image flash on dash and does another chime. Vehicle has given random warning beeps when reversing 2 times since these issues started and has done automatic breaking both times as I was trying to reverse. Issues happen randomly and started about 300 miles ago (2 weeks or so) seem to be getting more frequent in past few days. I was trying to check today for open recall and was surprised to not have any for this issue / vehicle. I have not yet called the dealership but plan on doing so this week. …
The cars emergency brake system malfunctioned on our 2018 Audi Q5 Premium Plus, causing the brakes to lock up for no reason while traveling on a busy street at 35 mph. The force of the braking was enough to cause a bruise from the seatbelt. The risk is potential loss of control of the car, especially if this occurred at a higher speed, or being rear ended. We immediately took the car to an Audi dealer who could not ID an issue from looking at fault codes. We have been experiencing other bogus warning messages: light system warning (nothing wrong), engine RPM exceeded warnings (engine RPMs never close to being exceeded), phone SOS errors. NO warnings or symptoms regarding the brake system. Dealer says to monitor. We have been driving the car for about a week since, and have not experienced the same issue again.
While driving, the steering wheel suddenly locked up and could not be turned. Several warning lights simultaneously appeared on the dashboard including: "Steering malfunction! Please stop vehicle", "Audi adaptive light malfunction! See owners manual", "Start/stop system malfunction! Function unavailable", and "Audi pre sense currently limited" - No warning lights were present prior to this event. The sudden loss of steering could have caused serious injury to myself and to other drivers or pedestrians nearby. I was thankfully able to stop the vehicle, but I could not pull over because the steering wheel could not be turned. The car was towed to the Audi dealership and I was told the "Electronic power steering rack" would need to be replaced costing nearly $5,000.00.
It says driver system malfunction. Day before that it says Auto Start and Stop malfunction failure. When you are the traffic light and slow down and take a turn then the car gives kinds of couple of pushes as if the It gearbox is not able to adjust the speed automatically . You need to accelerate to keep the balance of the Car. Every passenger of the car feel the same. After 2 days I started getting Driver system malfunction warning. The car is not safe to drive on highways or local road as gearbox has some issues. There is a class action lawsuit for the similar problem which Audi did not address yet. https://margarianlaw.com/audi-class-action-lawsuit/
Regarding my 2018 Audi Q5 34000 miles. Driving on a busy highway a few ounces of water spilled in the backseat. Car lights up like a xmas tree and car came to a screeching stop. Two lanes of high speed traffic on both sides. Fiance just had both hips replaced, Ends up popping one of them out of socket during ordeal. Recall was issued for installation of 'protective cover' over gateway control module. Car received recall work. Part still failed. Audi won't cover the part. I'm out of warranty. Total bill $1800. Dealer has had car 3 weeks. I've been out of pocket for rental car
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.
Two issues. My temperature housing unit is leaking coolant. This car has very low mileage and is barely driven so it is very strange that this part is already defective. Seems the original integrity of the part may not have been good. Second, My Audi pre sense comes on while the car is driving and brings the car to a screaming halt as is there is something in the cars path. The problem is there is nothing in the cars path when this feature kicks in . It's quite dangerous as this has happened to me while driving on busy roads .
Collision Avoidance complaints in other Q5 years
Frequently asked questions
How common are collision avoidance problems on the 2018 Audi Q5?
NHTSA has 22 complaints about the driver assistance of the 2018 Audi Q5, 11% of the model year's 208 complaints. The component named most often is automatic emergency braking (10 mentions).
Is there a recall for 2018 Audi Q5 collision avoidance problems?
No. NHTSA lists no driver assistance recall for the 2018 Audi Q5, though it has 6 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2018 Audi Q5 collision avoidance problems start?
Half of the complaints with a recorded mileage happened before about 12,000 miles, and 67% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 0 fires and 1 injury to driver assistance problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.