2018 Audi A5 Transmission and drivetrain Problems
- Complaints
- 3about this part
- Share
- 8%of 38 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the transmission and drivetrain of the 2018 Audi A5, 8% of the 38 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I am writing to formally bring to your attention a potential violation of federal vehicle safety reporting requirements by Audi regarding an Electronic Control Unit (ECU)/Comfort Control Module failure in my 2018 Audi A5. As the original owner of this vehicle, I experienced a critical ECU failure approximately 2yrs after purchase (Sept 2017), which I believe qualifies as a major safety defect under 49 CFR 573.6-577.7. According to federal regulations, manufacturers are required to report such safety defects to the NHTSA within five (5) days of discovery. …”
NHTSA complaint #11641542, filed 2025-02“The water pump failed on my vehicle. Initially reported 2/2025 at Authorized Audi Service Center. They claimed it was normal for coolant to dip. Audi USA Confirmed I have a settlement class vehicle in 03/2025. Mentioned an 80K Mileage limit. (Car only had 69K miles at the time) When the issue persisted I reached out for repair in accordance to Water Pump Settlement. McKenna Audi Service center initially stated the extended warranty expired 05/2025, and mentioned an 8 Year Limit (8/80K whichever comes first) 9/3 Reached out to Audi USA again and they initially provided an approval. …”
NHTSA complaint #11685814, filed 2025-09Related service bulletins
- 11036901Aug 4, 2026This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- 11033474May 28, 2026This bulletin provides information when there are noises after selecting a ear while idling and the vehicle is stationary, or while driving.
- 11033465May 27, 2026This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- 11033475May 6, 2026The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the…
- 11031003Mar 20, 2026This bulletin provides information when the hydraulic pump cannot be adapted - P17EF00 in gearbox control unit.
- 11028433Jan 22, 2026This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- 11027358Dec 11, 2025This bulletin provides additoinal information to assist in determining the energy content of lithium-ion high-voltage batteries.
- 11023736Sep 5, 2025This bulletin provides informaiton when there is an oil leak at the transmission connector.
- 11022669Aug 15, 2025This bulletin provides informaoitn when there is droning noises/vibrations in tight corneres, in vehicles that have quattro with ultra technology.
- 11021441Jul 30, 2025This bulletin providesi nformation when various DTCs are stored; high maximum temperature recorded for clutch K1.
Transmission and drivetrain: other model years
Other parts of the 2018 Audi A5
8 complaintsOther or unknown
8 complaintsBrakes
4 complaintsElectrical system
4 complaintsBody and structure
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsAir bags
3 complaintsSteering
2 complaintsSuspension
2 complaintsEngine cooling
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaints
← All problems reported for the 2018 Audi A5
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology