2018 Audi A4 Transmission and drivetrain Problems
- Complaints
- 5about this part
- Share
- 11%of 45 total for the year
- Median mileage
- 14,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the transmission and drivetrain of the 2018 Audi A4, 11% of the 45 complaints for this model year. Where a mileage was given, the median is 14,000 miles.
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.
“Engine malfunction prevented the vehicle to engage and a significant lag. Correction of the failure has been attempted twice and a third attempt to correct malfunction is currently in progress with no movement as of yet. Gas tank has been drained and refilled and did not correct issue. Definitely not a gasoline type issue.”
NHTSA complaint #11349755, filed 2020-08, 14,000 miles“A vehicle diagnostic scan dated 04/15/2026 at approximately 88,502 miles showed a stored transmission electronics fault: P084100, described as “Transmission fluid pressure sensor/switch A range/performance,” with status listed as passive/sporadic. This indicates a transmission / powertrain control concern involving the transmission fluid pressure sensor, transmission electronics, wiring, control logic, pressure monitoring, or related powertrain components. …”
NHTSA complaint #11747862, filed 2026-07“While driving there was an internal failure of the front differential which caused debris to fly out and the debris then punctured the transmission according to the diagnosis on an Audi dealership. The car jerked to a stop and would not move. If this happens at high speed it represents a sever safety risk to the occupants. The vehicle has been inspected by the manufacturer and insurance representatives as well as by a dealer. There were no warning lamps, messages or other symptoms and this happened with no warning.”
NHTSA complaint #11539793, filed 2023-08Related 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.
- 11031002Mar 20, 2026This bulletin provides information when there are humming noises when cornering; DL-382.
- 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.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 1 | 17% |
| 2021 | 2 | 18% |
| 2018 | 5 | 11% |
| 2017 | 4 | 7% |
| 2016 | 1 | 9% |
| 2015 | 1 | 5% |
| 2014 | 2 | 6% |
| 2012 | 2 | 11% |
| 2011 | 3 | 27% |
| 2010 | 9 | 14% |
| 2009 | 6 | 5% |
| 2008 | 12 | 7% |
| 2007 | 11 | 6% |
| 2006 | 14 | 5% |
| 2005 | 16 | 7% |
| 2004 | 12 | 6% |
| 2003 | 43 | 20% |
| 2002 | 16 | 9% |
| 2001 | 5 | 4% |
| 2000 | 8 | 8% |
| 1999 | 10 | 5% |
| 1998 | 7 | 3% |
| 1997 | 5 | 5% |
| 1996 | 6 | 7% |
Other parts of the 2018 Audi A4
18 complaintsElectrical system
17 complaintsFuel system
6 complaintsBody and structure
6 complaintsEngine
5 complaintsAir bags
4 complaintsBrakes
4 complaintsForward collision avoidance
4 complaintsBack-over prevention (rear camera)
2 complaintsSuspension
2 complaintsElectronic stability control
1 complaintsEngine cooling
1 complaints
← All problems reported for the 2018 Audi A4
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