2018 Audi A4 / S4 Audi A4 / S4 2018

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2018 Audi A4 / S4 repairs by problem area

Engine (67%)

Transmission and Drivetrain (0%)

Brakes and Traction Control (0%)

Suspension and Steering (0%)

Electrical and Air Conditioning (17%)

Paint, Rust, Leaks, Rattles, and Trim (0%)

Other (17%)

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Chart based on 6 repairs.
See TSBs and recalls for the 2018 Audi A4 / S4.

2018 Audi A4 4dr Sedan

turbocharged 354hp 3.0L V6 8-speed shiftable automatic AWD

Audi A4 in Massachusetts, United States
Aug 2017 - Jun 2019
Apr 2018

6000 mi
A warning "engine system malfunction" came on and revs were limited to 3500 although the car otherwise ran normally. Turning off and restarting the car had no effect. I parked the car overnight and in the morning, the malfunction warning was gone. I took it to the dealer where they detected an OBD code for "blocked fan" that had resolved spontaneously. No repair was required and there was no charge as the car is under warranty. The original trigger for this code remains unexplained. 
Audi A4 in Ohio, United States
Nov 2017 - Jun 2020
Jan 2018

1000 mi
service engine soon light. code for oil level. found oil over filled, drained some out to resolve incident 
Dec 2019

15000 mi
Audi A4 in British Columbia, Canada
Feb 2018 - Jun 2020
Nov 2018

6200 mi
sensor for ac fan 
Audi A4 in Ohio, United States
May 2017 - Mar 2018
Jan 2018

9500 mi
Cooling fan control unit failed (warranty item) many failed globally and I had to wait for the part to come from Audi, Germany. The entire wait was just under three weeks, but did include both Christmas, the week following and New Years, so some of the issue was the time of year (holidays, etc.) During the time the car was at the dealer, I was loaned a new A8L. 
Audi A4 in Connecticut, United States
Oct 2017 - Jun 2020
Nov 2018

10000 mi
Driver’s Seat was creaking. Dealer found inflatable seat bolster was bad and in need of replacement. Took a few days to order part and replace seat bolster. Creaking noise is now gone. Covered under vehicle warranty. 

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2017 Audi A4 4dr Sedan

turbocharged 252hp 2.0L I4 7-speed automated manual FWD

Audi A4 in New Jersey, United States
Aug 2016 - Jul 2019
Oct 2016 The drivers window stopped going up or down. 
Audi A4 in California, United States
Aug 2017 - Jun 2019
Sep 2017

10000 mi
Trip odometer spontaneously resetting (long-term). Instrument cluster changed. 
Feb 2018

14000 mi
Backup camera periodically not engaging when backing up. Only engine restart fixes problem. 

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2017 Audi A4 4dr Sedan

turbocharged 252hp 2.0L I4 7-speed automated manual AWD

Audi A4 in Washington, United States
Sep 2016 - Jun 2020
Aug 2018

19500 mi
Recall for speaker trim 
Audi A4 in New York, United States
Dec 2018 - Jun 2020
Sep 2019

40000 mi
Second attempt by Audi dealer to stop transmission fluid leak, this time pan gasket was replaced. During PM visit my independent shop noticed leaking at transmission pan. They brought car to Audi dealer for fix. Known issue at Audi there is a TSB on this. 
Audi A4 in California, United States
Dec 2016 - Jun 2019
Mar 2018

8000 mi
Woofer on rear deck defective. Repaired under tech. service bulletin. 
Audi A4 in Maine, United States
Jun 2017 - Jun 2020
Jun 2018

26000 mi
Replaced pads and rotors 
Audi A4 in California, United States
Mar 2017 - Sep 2018
Aug 2017

8600 mi
Rear passenger window seal/gasket was deformed. The cause of deformation was unknown. 
Audi A4 in California, United States
Feb 2017 - Jan 2018
Mar 2017

1000 mi
License plate frame screws stripped by dealer - common Audi issue. Clicking noise from driver assistance system. Dealer says this is normal, but I don't believe so. The car is very quiet and this is a very strange clicking noise when the auto cruise control is working. I will have it checked again at the next service trip. 
Sep 2017

5000 mi
MMI system locking up. System was restarted, but issue still persists Lane Keep Assist - car keeps driving to left. System was rebooted/restarted, but issue still persists 
Jan 2018

7000 mi
Car was a buyback due to the MMI locking up and the driver assistance feature pulling the vehicle to the left. 
Audi A4 in North Carolina, United States
Mar 2016 - Jan 2019
Apr 2016 Coolant leak. Defective cap. 
Audi A4 in Nova Scotia, Canada
Mar 2016 - Jun 2020
Oct 2017

24180 mi
A warning message about safety restraint system not operational. Dealer said the seat pressure sensor operating correctly. Message still occurs infreqently , once a every few days. 
Audi A4 in Massachusetts, United States
Sep 2016 - Dec 2018
Jan 2018

48000 mi

US $600
Rear brakes and pads 
Audi A4 in Washington, United States
Mar 2016 - Jun 2020
Jul 2016

2300 mi
Rattle from passenger-side glove box. Dealer tightened trim retaining screws. 
Feb 2017

8000 mi
Nav screen flickering. Dealer performed software update which lessened the flickering. It still occurs but is less frequent/noticeable. Rattle present on passenger side. Dealer could not isolate the cause but applied felt tape to known trouble spots proactively. Rattle much less frequently. 
Audi A4 in California, United States
Nov 2016 - Mar 2020
Mar 2018

11000 mi
the MMI unit failed, so navigation and bluetooth did not work 
Nov 2018

20000 mi
Navigation antenna failed and had to be replaced 

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2017 Audi A4 4dr Sedan

turbocharged 252hp 2.0L I4 6-speed manual AWD

Audi A4 in Alabama, United States
Apr 2017 - Jul 2020
Jan 2020

10000 mi
Class 1 oil leak, car under warranty but dealer did not repair but monitor. Upon a followup inspection, no leaks were found. 

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2017 Audi A4 / S4

Engine not specified

Audi A4 in Michigan, United States
Jun 2017 - Jun 2018
Apr 2018

20000 mi
Rear passenger window would not operate. Dealer replaced switch. 

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See TrueDelta's information for all Audi models.

2018 Audi A4 / S4 Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2018 Audi A4 / S4 problems occur, check out our car reliability stats.

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