2018 Audi S4 Problems, Complaints & Recalls
- Compared with other S4 years
- Not enough data 14th of 23 for complaints
- Safety recalls
- 2 recalls: check your VIN
- NHTSA crash rating
- Not rated
Owners have filed 7 complaints with NHTSA about the 2018 Audi S4. That ranks 14th out of 23 S4 model years for complaints. The most reported problem area is engine (4 complaints, 57%), typically at around 1,300 miles. There are 2 safety recalls covering this model year.
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- 7owner complaints
- 2safety recalls
- 0NHTSA investigations
- 0complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2018 Audi S4 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 |
|---|---|---|---|---|---|
| Engine | 4 | 57% | 1,300 | — | — |
| Power Train | 1 | 14% | 1,300 | — | — |
| Service Brakes | 1 | 14% | 4,000 | — | — |
| Structure | 1 | 14% | 5,800 | — | — |
| Suspension | 1 | 14% | — | — | — |
| Vehicle Speed Control | 1 | 14% | 1,300 | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2018 Audi S4 recalls (2)
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.
Air bags:frontal:passenger side:inflator module; air bags:sensor:occupant classification
Problem: Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi RS5 Sportback, 2018 S5 Cabriolet, S5 Sportback, S5 Coupe, S4 Sedan, A5 Cabriolet, A5 Sportback, A5 Coupe, and 2017-2018 A4 Sedan and A4 Allroad vehicles. Oxidation on the Passenger Occupant Detection System (PODS) connecting cable may cause 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: Audi will notify owners, and dealers will install cable ties to the harness, free of charge. The recall began September 9, 2019. Owners may contact Volkswagen customer service at 1-800-893-5298. Audi's number for this recall is 74D9.
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.
Water pump defect for the 3.0L ea839 turbo engine found across many Porsche and Audi models. Defect causes damage to vacuum lines, thermostat, and can eventually lead to engine failure if not resolved. No way of knowing this is happening until you start to lose coolant (which will throw an engine…
My 2018 Audi S4 has a catastrophic engine failure issue and this is common with the EA839 engine. There is a knocking in the motor that is caused by internal engine parts (rocker arms needle bearings) becoming loose and dislodged. The metal shavings travel in the motor oil and destroy the engine…
PCV housing and lines failed. Caused pressure to build up thus shooting off the oil cap shooting oil everywhere! in addition to that it is a huge fire hazard considering the turbo is right next to it.
Audi Dealer inspection revealed Rear spring is broken and mounts are deteriorating. Dealer states not common and would result in accident if not repaired. Research indicates broken springs common with certain Audi vehicles (A4/S4, Q5 & Q7), especially 2018 model year. See Audi World forum website…
The vehicle's pre sense auto-braking and braking alert jolt has been activating erroneously and have almost caused accidents at speed. The system cannot be permanently disabled, it deactivates upon ignition restart. The system has erroneously and aggressively jolted the breaks on several occasions…
Other Audi S4 years
| Year | Complaints | Recalls |
|---|---|---|
| 2022 S4 | 1 | 1 |
| 2021 S4 | 2 | 4 |
| 2020 S4 | 16 | 3 |
| 2019 S4 | 2 | 1 |
| 2018 | 7 | 2 |
| 2015 S4 | 1 | 1 |
| 2014 S4 | 17 | 1 |
| 2013 S4 | 33 | 1 |
| 2012 S4 | 22 | 1 |
| 2011 S4 | 26 | 1 |
| 2010 S4 | 60 | 0 |
| 2009 S4 | 0 | 2 |
| 2008 S4 | 4 | 2 |
| 2007 S4 | 13 | 2 |
| 2006 S4 | 30 | 2 |
| 2005 S4 | 43 | 2 |
| 2004 S4 | 29 | 1 |
| 2003 S4 | 1 | 1 |
| 2002 S4 | 22 | 1 |
| 2001 S4 | 87 | 1 |
| 2000 S4 | 143 | 1 |
| 1996 S4 | 0 | 1 |
| 1995 S4 | 1 | 2 |
See all Audi S4 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 S4?
Owners most often report engine, power train, service brakes problems. The top one, engine, accounts for 4 complaints.
Was there a recall on the 2018 Audi S4?
Yes, 2 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2018 Audi S4 a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other S4 model years, the 2018 has too little data to compare. Always get a pre-purchase inspection and check the VIN for open recalls.