There are 2 stored owner reports matching the engine leading-label group for the 2013 Audi S4 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)Engine mount failure at 60,000 miles
LOST ALL COOLANT DUE TO RADIATOR LEAK FROM ROAD HAZARD DAMAGE CAUSED BY BAD DESIGN OF FRONT LOWER GRILL. IT HAS NO PROTECTIVE MESH AND CLEAR OPENINGS FOR ROCKS TO PROTRUDE. I FOUND THIS ON AUDI FORUM TWO PEOPLE NOW ON THE VAIRIOUS BOARDS HAVE THOUGHT THEY LOST THEIR WATER PUMP, BUT IN FACT HAVE HAD HOLES PUNCHED IN THEIR INTERCOOLING RADIATORS BY ERRANT ROAD DEBRIS WHICH STRIKES THE RADIATOR AT HIGHWAY SPEEDS AND PERFORATES IT. SINCE THE ENGINE AND SUPERCHARGER COOLING SYSTEMS SHARE THE SAME OVERFLOW CONTAINER, BUT ARE SEPERATE LOOPS, IT'S ONLY A MATTER OF TIME BEFORE BOTH SYSTEMS HAVE LOST ALL COOLANT LIQUID, DUE TO THE ONE WAY VALVE SYSTEM, THE HEATING AND COOLING OF THE COOLANT AND THE SHARED OVERFLOW TANK. THIS IS NOT COVERED BY AUDI WARRANTY, AND IS CONSIDERED WEAR AND TEAR. IT ALSO REMOVES THE CAR FROM SERVICE UNTIL IT PARTS ARE OBTAINED AND IT CAN BE REPAIRED, NOT TO MENTION THE COST AND FRUSTRATION. HTTP://FORUMS.AUDIWORLD.COM/SHOWTHREAD.PHP?T=2784308&HIGHLIGHT=NWS4GUY+MESH&PAGE=22. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.