| 1 | 0 | 3 | 4 | 3 | 4 |
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%)
Chart based on 14 repairs.
2018 Audi A4 / S4 repair cost distribution
$2500+ (0%)
$1000 - $2499 (0%)
$500 - $999 (11%)
$100 - $499 (11%)
< $100 (78%)
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 Colorado, United States Jan 2022 - Jun 2022 | |||
| Jun 202234000 mi | Multiple warning lights, ABS failure. Battery failure | ||
| Audi A4 in Ohio, United States May 2017 - Mar 2018 | |||
| Jan 20189500 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 British Columbia, Canada Feb 2018 - Mar 2021 | |||
| Nov 20186200 mi | sensor for ac fan fan sensor replaced | ||
| Oct 202021700 mi | cooling fan sensor | ||
| Audi A4 in Connecticut, United States Oct 2017 - Jun 2022 | |||
| Nov 201810000 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 Massachusetts, United States Aug 2017 - Jun 2022 | |||
| Apr 20186000 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 - Jan 2021 | |||
| Jan 20181000 mi | service engine soon light. code for oil level. found oil over filled, drained some out to resolve incident | ||
| Dec 201915000 mi | CODES P218100,P308100,P01E400. REPLACED THERMOSTAT UNDER WARRANTY | ||
| Jan 202121000 mi | Emergency sos malfunction indicator light on. Replaced sos antenna and wiring harness | ||
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 202140000 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 202241000 miUS $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. | ||
2018 Audi A4 4dr Sedan
| Audi A4 in Quebec, Canada Dec 2020 - Jul 2022 | |||
| Jul 202244640 miC $600 | Front brake pads and rotors change | ||
2017 Audi A4 4dr Sedan
turbocharged 252hp 2.0L I4 7-speed automated manual FWD
| Audi A4 in California, United States Aug 2017 - Jun 2019 | |||
| Sep 201710000 mi | Trip odometer spontaneously resetting (long-term). Instrument cluster changed. | ||
| Feb 201814000 mi | Backup camera periodically not engaging when backing up. Only engine restart fixes problem. | ||
| Audi A4 in New Jersey, United States Aug 2016 - Jul 2019 | |||
| Oct 2016 | The drivers window stopped going up or down. | ||
2017 Audi A4 4dr Sedan
turbocharged 252hp 2.0L I4 7-speed automated manual AWD
| Audi A4 in Washington, United States Mar 2016 - Jun 2022 | |||
| Jul 20162300 mi | Rattle from passenger-side glove box. Dealer tightened trim retaining screws. | ||
| Feb 20178000 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 North Carolina, United States May 2021 - Jun 2022 | |||
| Jul 202180000 miUS $1500 | Water pump replacement | ||
| Audi A4 in California, United States Aug 2016 - Oct 2021 | |||
| Oct 202134000 mi | Engine mount replacement. | ||
| Audi A4 in Ontario, Canada Dec 2020 - Jun 2022 | |||
| Dec 202135340 mi | Trunk lid kick open mechanism due to corrosion Rear spring mounts corroded | ||
| Audi A4 in Washington, United States Sep 2016 - Jun 2022 | |||
| Aug 201819500 mi | Recall for speaker trim | ||
| Sep 202135000 miUS $700 | Failed thermostat and leaking coolant resulted in car entering limp-home mode. Thermostat was replaced along with coolant. | ||
| Audi A4 in Nova Scotia, Canada Mar 2016 - Aug 2022 | |||
| Oct 201724180 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 California, United States Mar 2017 - Sep 2018 | |||
| Aug 20178600 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 20171000 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 20175000 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 20187000 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 Massachusetts, United States Sep 2016 - Dec 2018 | |||
| Jan 201848000 miUS $600 | Rear brakes and pads | ||
| Audi A4 in California, United States Nov 2016 - Mar 2020 | |||
| Mar 201811000 mi | the MMI unit failed, so navigation and bluetooth did not work | ||
| Nov 201820000 mi | Navigation antenna failed and had to be replaced | ||
| Audi A4 in California, United States Dec 2016 - Jun 2019 | |||
| Mar 20188000 mi | Woofer on rear deck defective. Repaired under tech. service bulletin. | ||
| Audi A4 in Maine, United States Jun 2017 - Jan 2022 | |||
| Jun 201826000 mi | Replaced pads and rotors | ||
| May 202160000 miUS $1600 | Had replace water pump and related parts | ||
| Audi A4 in Michigan, United States Jun 2017 - Jul 2022 | |||
| Apr 201820000 mi | Rear passenger window would not operate. Dealer replaced switch. | ||
| May 202188000 miUS $3500 | Overheating, replaced water pump. | ||
| Audi A4 in New York, United States Dec 2018 - Aug 2021 | |||
| Sep 201940000 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. | ||
2017 Audi A4 4dr Sedan
turbocharged 252hp 2.0L I4 6-speed manual AWD
| Audi A4 in Pennsylvania, United States Jan 2017 - Jun 2022 | |||
| Jan 202127000 mi | Engine replaced due to occasional instrument warnings | ||
| Audi A4 in Alabama, United States Apr 2017 - Jun 2022 | |||
| Jan 202010000 mi | Class 1 oil leak, car under warranty but dealer did not repair but monitor. Upon a followup inspection, no leaks were found. | ||
| Audi A4 in British Columbia, Canada Jan 2021 - Jun 2022 | |||
| Jul 202116740 miC $200 | Right and Left Front Wheel bearings replaced, right rear shock leaking oil and replaced - work completed under Audi CPO warranty Replaced leaking right rear shock under Audi CPO warranty AudiCare - 2 yearly brake fluid flush | ||
| Feb 202223560 mi | Oil leaking around cam adjustment activators | ||
| Audi A4 in Maryland, United States Jul 2017 - Jun 2022 | |||
| Jun 202146000 mi | occasional loss of sound from satellite radio channels | ||
| Mar 202256000 miUS $250 | thermostat housing | ||
2017 Audi A4 4dr Sedan
turbocharged 150hp 1.4L I4 7-speed automated manual FWD
| Audi A4 in Costa Rica Dec 2020 - Jun 2022 | |||
| Mar 202138440 mi$400 | Late model Audis have a known issue where the pressure sensor for the brake booster goes bad. It will trigger a warning (yellow, low priority) that there is an issue with the brake servo, and you can continue driving. When pulling codes it will indicate that the vacuum pressure was too low. If this error is stored 20 times, the ABS module memory is filled up. The message on the IP will change to "ABS Fault. Stop Immediately". The car remains fully functional and it is safe to drive though. The only fix is to replace the ABS module entirely. This can only be done at the dealer or a shop with access to Audi servers in order to code the new module and lift the component protection. The cause is the pressure sensor on the brake booster, which costs about $20... | ||
2017 Audi A4 / S4
Engine not specified
| Audi A4 in Great Britain Jan 2022 - Dec 2022 | |||
| Nov 202264000 mi£18386 | Initial repair task was fixing coolant leak from water pump. During testing after initial repair, oil pump failed and engine was ruined. Cause was identified from official Audi service bulletin. Damage required complete replacement of engine, along with required seals and gaskets etc. | ||
See TrueDelta's information for all Audi models.
