2018 Audi A4 / S4 Audi A4 / S4 2018

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2018 Audi A4 / S4 repairs by problem area

Engine (36%)

Transmission and Drivetrain (0%)

Brakes and Traction Control (14%)

Suspension and Steering (0%)

Electrical and Air Conditioning (36%)

Paint, Rust, Leaks, Rattles, and Trim (7%)

Other (7%)

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Chart based on 14 repairs.
See TSBs and recalls for the 2018 Audi A4 / S4.

2018 Audi A4 / S4 repair cost distribution

$2500+ (0%)

$1000 - $2499 (0%)

$500 - $999 (11%)

$100 - $499 (11%)

< $100 (78%)

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Chart based on 9 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2018 Audi A4 4dr Sedan

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

Audi A4 in Connecticut, United States
Oct 2017 - Jun 2022
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. 
Audi A4 in Colorado, United States
Jan 2022 - Jun 2022
Jun 2022

34000 mi
Multiple warning lights, ABS failure. Battery failure 
Audi A4 in Ohio, United States
Nov 2017 - Jan 2021
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
CODES P218100,P308100,P01E400. REPLACED THERMOSTAT UNDER WARRANTY 
Jan 2021

21000 mi
Emergency sos malfunction indicator light on. Replaced sos antenna and wiring harness 
Audi A4 in British Columbia, Canada
Feb 2018 - Mar 2021
Nov 2018

6200 mi
sensor for ac fan fan sensor replaced 
Oct 2020

21700 mi
cooling fan sensor 
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 Massachusetts, United States
Aug 2017 - Jun 2022
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. 

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2018 Audi A4 4dr Sedan

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

Audi A4 in Wisconsin, United States
Feb 2021 - Jun 2022
Dec 2021

40000 mi
Sunroof made a crackling noise when it was opening and closing - they sprayed some adhesive on the chassis above the headliner liner Lost cell phone connection repeatedly in a large city - has to do with 3G shutdown 
Apr 2022

41000 mi

US $200
All the electrical within the car repeatedly shut off. I replaced the battery after a voltage check and registered the new battery with the car. 

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2018 Audi A4 / S4

Engine not specified

Audi A4 in Quebec, Canada
Dec 2020 - Jul 2022
Jul 2022

44640 mi

C $600
Front brake pads and rotors change 

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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.