2018 Audi A4 Problems, Complaints & Recalls
- Compared with other A4 years
- Fewer complaints than other years 18th of 31 for complaints
- Safety recalls
- 1 recall: check your VIN
- NHTSA crash rating
- 5 out of 5 stars
Owners have filed 45 complaints with NHTSA about the 2018 Audi A4. That ranks 18th out of 31 A4 model years for complaints. The most reported problem area is unknown or other (18 complaints, 40%). Complaints mention 1 crash. There is 1 safety recall covering this model year.
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- 45owner complaints
- 1safety recalls
- 0NHTSA investigations
- 1complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2018 Audi A4 problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Unknown or Other | 18 | 40% | — | — | — |
| Electrical System | 17 | 38% | — | — | — |
| Fuel/propulsion System | 6 | 13% | 14,000 | — | — |
| Structure | 6 | 13% | 10,000 | — | — |
| Engine | 5 | 11% | 14,000 | — | — |
| Power Train | 5 | 11% | 14,000 | — | — |
| Air Bags | 4 | 9% | — | — | — |
| Forward Collision Avoidance | 4 | 9% | — | — | — |
| Service Brakes | 4 | 9% | — | — | — |
| Back Over Prevention | 2 | 4% | — | — | — |
| Suspension | 2 | 4% | — | — | — |
| Electronic Stability Control (esc) | 1 | 2% | 6,000 | — | — |
| Engine and Engine Cooling | 1 | 2% | 92,000 | — | — |
| Seats | 1 | 2% | — | — | — |
| Steering | 1 | 2% | — | — | — |
| Tires | 1 | 2% | — | — | — |
| Visibility/wiper | 1 | 2% | — | — | — |
| Wheels | 1 | 2% | — | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2018 Audi A4 recalls (1)
Tap a recall to see the problem, the risk and the fix.
Air bags:sensor:occupant classification:front passenger; seats
Problem: Volkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabriolet, S5 Coupe, and Audi S5 Sportback vehicles. The cable connecting the seat heater to the Passenger Occupant Detection System (PODS) may have a contact fault, causing the software to misdiagnose a malfunction and disable the passenger air bag.
Risk: A disabled passenger air bag increases the risk of injury in the event of a crash.
Fix: Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of charge. Owner notification letters were mailed January 7, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 74E3. This recall is an expansion of Recall 19V-547 (74D9). Vehicles previously repaired under 19V-547 will need to return for the new remedy.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
I am reporting a serious vehicle safety incident involving my 2018 Audi A4. On XXX, while traveling from [XXX] to [XXX] with my [XXX] son in the vehicle, all four tire valve stems failed during a single interstate journey. The first failure occurred on the front-left tire, causing nearly…
A vehicle diagnostic scan dated 04/15/2026 at approximately 88,502 miles showed a stored transmission electronics fault: P084100, described as âTransmission fluid pressure sensor/switch A range/performance,â with status listed as passive/sporadic. This indicates a transmission / powertrain…
A vehicle diagnostic scan dated 04/15/2026 showed electrical communication faults involving vehicle control modules. The scan showed U014100, described as âLost Communication With Body Control Module âAâ,â with status listed as passive/sporadic. The scan also showed U112100, described as…
An Audi dealer installed 245/40R18 93H tires on this 2018 Audi A4, while the vehicle placard/specification requires 245/40R18 97H. The lower load index reduces capacity from 1,609 lb per tire to 1,433 lb per tire, approximately 704 lb total across four tires. This creates a safety risk because…
The rear-view camera intermittently fails to engage when the vehicle is shifted into reverse. When the camera does display, the image sometimes shows horizontal glitch lines/artifacts. This affects backing visibility and parking safety and creates a risk of collision with pedestrians, objects…
Other Audi A4 years
| Year | Complaints | Recalls |
|---|---|---|
| 2025 A4 | 1 | 0 |
| 2024 A4 | 2 | 0 |
| 2023 A4 | 10 | 0 |
| 2022 A4 | 6 | 3 |
| 2021 A4 | 11 | 4 |
| 2020 A4 | 128 | 3 |
| 2019 A4 | 10 | 1 |
| 2018 | 45 | 1 |
| 2017 A4 | 55 | 1 |
| 2016 A4 | 11 | 0 |
| 2015 A4 | 19 | 0 |
| 2014 A4 | 32 | 0 |
| 2013 A4 | 24 | 0 |
| 2012 A4 | 19 | 0 |
| 2011 A4 | 11 | 0 |
| 2010 A4 | 64 | 0 |
| 2009 A4 | 120 | 2 |
| 2008 A4 | 175 | 4 |
| 2007 A4 | 196 | 3 |
| 2006 A4 | 295 | 3 |
| 2005 A4 | 219 | 3 |
| 2004 A4 | 189 | 2 |
| 2003 A4 | 210 | 3 |
| 2002 A4 | 181 | 1 |
| 2001 A4 | 131 | 1 |
| 2000 A4 | 96 | 2 |
| 1999 A4 | 190 | 4 |
| 1998 A4 | 258 | 4 |
| 1997 A4 | 98 | 6 |
| 1996 A4 | 89 | 4 |
| 1995 A4 | 1 | 1 |
See all Audi A4 problems by year, every Audi model, or the Audi VIN decoder.
Similar Audi models
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Frequently asked questions
What are the most common problems with the 2018 Audi A4?
Owners most often report unknown or other, electrical system, fuel/propulsion system problems. The top one, unknown or other, accounts for 18 complaints.
Was there a recall on the 2018 Audi A4?
Yes, 1 safety recall. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2018 Audi A4 a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other A4 model years, the 2018 has fewer complaints than most years, and NHTSA rates it 5 out of 5 stars overall in crash tests. Always get a pre-purchase inspection and check the VIN for open recalls.