NHTSA lists 1 safety recall and 22 owner complaints for the 2002 Audi S4. Most complaints involve electrical system (10) and service brakes, hydraulic (9). The EPA rates it 18 mpg combined.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2000-2001 Audi TT Coupe, TT Roadster, 2000-2002 A4, and S4 vehicles equipped with Non-Azide Driver Air Bag Inflators (NADI) that do not contain phase stabilized ammonium nitrate (PSAN) propellant. Due to a manufacturing issue, the NADI inflators may absorb moisture, possibly causing the air bag to deploy improperly in the event of a crash.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“TL*THE CONTACT OWN A 2002 AUDI S4. THE CENTER INSTRUMENT PANEL DISPLAY INTERMITTENTLY FAILED TO ILLUMINATE. WHEN THE FAILURE OCCURRED HALF OF THE DISPLAY WAS WELL LIT WHILE THE OTHER HALF WAS NOT. OCCASIONALLY THERE WAS ALSO AN ODOR SIMILAR TO ELECTRICAL SMOKE. THE DEALER WAS NOT NOTIFIED OF THE FAILURE SINCE THE LIGHTS ON THE INSTRUMENT PANEL DO NOT REMAIN ILLUMINATED. THE DRIVER STATED THAT A CABLE MAY BE DISCONNECTED WITHIN THE INSTRUMENT PANEL WHICH MAY BE A COMMON PROBLEM. THE FAILURE HAS OCCURRED INTERMITTENTLY FOR ONE YEAR. THE FAILURE MILEAGE WAS 85,000.”
“THE BRAKES BOOST/VACUUM ASSIST LINE CHECK VALVE CRACKS APART INTO TWO PIECES. THIS CAUSES THE TOTAL LOSS OF THE POWER ASSISTED BRAKE SYSTEM IN THE CAR AND SUBSEQUENTLY MAKES IT VERY HARD TO STOP THE VEHICLE. THERE IS NO WARNING ABOUT THE PENDING LOSS OF BRAKES. ONE SECOND YOU HAVE BRAKES THE NEXT IT FEELS LIKE YOU ARE TRYING TO PUSH A BRICK THRU THE FLOOR OF THE VEHICLE TRYING TO GET IT TO STOP. *NM”
“THE DRIVER'S SEAT EXPERIENCED A ROCKING MOTION WHEN THE VEHICLE ACCELERATED. THE CONSUMER SUSPECTED POSSIBLE SEAT FRAME DAMAGE. *AK THE SEAT WOULD ROCK FORWARD AND BACKWARD UPON ACCELERATION AND DECELERATION. THE DEALER REFUSED TO DO ANY FURTHER REPAIRS. THE PROBLEM GRADUALLY BECAME WORSE. THERE WAS A COOLANT LEAK AND AN ELECTRICAL SHORT WHERE THE OIL PRESSURE SWITCH WAS LOCATED.*SCC *JB”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| S4 Auto (S5), 6 cyl, 2.7 L, Turbo · 4-Wheel or All-Wheel Drive | 15 | 22 | 18 | $4,400 | 494 |
| S4 Man 6-spd, 6 cyl, 2.7 L, Turbo · 4-Wheel or All-Wheel Drive | 15 | 22 | 18 | $4,400 | 494 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
1 safety recall as of Oct 30, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 22 complaints with NHTSA. The most-cited components are electrical system (10), service brakes, hydraulic (9), seats (3). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2002 Audi S4 at 18 mpg combined, depending on engine and drivetrain (2 versions rated).