Audi S4

The 2025 S4 in brief

The 2025 Audi S4 is a compact car offered with a 3.0L 6-cyl turbo engine and all-wheel drive.

It measures about 188 inches long and 73 inches wide on a 111-inch wheelbase, with a curb weight of roughly 3,854 lb.

EPA rates its most efficient version at 24 MPG combined (20 city / 29 highway), 16% worse than the 2025 compact car average of 28.6 MPG, for an estimated $3,400 a year in fuel.

NHTSA has not published a 5-Star overall rating for this model year.

There are no recalls or owner complaints on file with NHTSA for this model year.

The Audi S4 has 20 model years in our data, from 2005 to 2025, classed as Compact Cars, Subcompact Cars.

Its most efficient year was 2025 at 24 MPG combined; across all years the best version ranged from 16 to 24 MPG.

Owners most often report problems with the power train (78), electrical system (32), engine (19).

Buying used? 2024 has the fewest problems in our data, and 2021 is the year to avoid.

2021 has the most recalls (4); all years together count 13 campaigns and 172 owner complaints.

How the 2005 S4 compares

The 2005 Audi S4 is a subcompact car offered with a 4.2L 8-cyl engine and 4-wheel or all-wheel drive.

It measures about 179 inches long and 70 inches wide on a 104-inch wheelbase, with a curb weight of roughly 3,935 lb (Avant 4dr Wagon AWD).

About the Audi S4

The Audi S4 is the high performance variant of Audi's compact executive car A4. The original Audi S4, built from 1991 until 1994, was a performance-oriented version of Audi's 100 saloon/sedan. All subsequent S4s, beginning with the "B5" platform car in 1997, have been based on the Audi A4; and as the A4 has evolved from one generation to the next, so has the S4. Audi's platform generation names, beginning with "B5" in 1997, are used throughout to distinguish between generations/evolutions of these products.

From the Wikipedia article "Audi S4", licensed under CC BY-SA 4.0.