2018 Audi Q5 · symptom sheet
Engine stalls or loses power while driving
- 25owner reports
- 47,000median miles
- $6,000median quote
- 1involved a crash
Newest report Sep 22, 2026 · checked Oct 2, 2026
103 of the 205 complaints on this car are about the electrical system. 25 of those describe stalling, which makes it the most reported problem on the 2018 Q5.
Tick what matches of 25 reports
Stalling on other Q5 years
No other Q5 model year has enough reports of stalling for a sheet of its own. See every Q5 year.
What this problem usually is
Stalling reports are some of the most alarming on the site. The engine quits while the car is moving, sometimes on a highway and sometimes at a stop. Many owners say it restarted right away and the dealer found no stored code, which is part of why these complaints pile up before anything gets fixed.
What got replaced
Owners who name the part that was replaced mention the battery (3 reports).
Recalls and investigations
One recall on the electrical system covers the 2018 model year. A recall on the same system isn't always the same failure, so read the defect text.
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.
All 6 recalls on the 2018 Audi Q5, with the owner complaints on each recalled system
What owners paid
8 of the 25 reports quote a price. Each dot is one quote. The middle half runs $4,000 to $9,282.
When it happens
The middle half of failures fell between 18,000 and 60,000 miles, from the 14 reports that gave a mileage.
What owners wrote
“Multiple electrical failures that control numerous safety systems, such as airbags, Collision avoidance, speed control, etc. Airbags will not activate in a collision. Vehicle will shut off at highway speeds, resulting in loss of steering control. The vehicle has been inspected by an Audi dealer. Multiple warnings on dash came on when the issue occurred.”
Filed Sep 22, 2026
“XXX My wife drive her 2018 audi q5 2.0 on express way with mother([XXX]),the car suddenly stall and lost all power ,because car bcm2 module has suffered liquid damage due to known vehicle design defect, towing to nearest repair shop change new bcm2 module and fix wire spend near $4000.00 dollars . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)”
Filed Aug 18, 2026
Should you keep driving it?
This page can't tell you that. 1 of 25 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Paid for this repair before a recall covered it? How recall reimbursement works