Competing in the compact sedan segment, the 2018 Audi S4 is a direct competitor to the Infiniti Q50 RED SPORT 400, the Mercedes-Benz AMG C 43, and the BMW 3 Series 340i. The Audi S4 starts off at an MSRP of $51,400, going all the up to $55,800, with 2 trims in the lineup. Each trim is offered with a 3.0L Turbo V6 engine and an 8-speed automatic transmission, producing 354 horsepower and 369 lb-ft of torque. Through this powertrain, the Audi S4 manages a 0-60 of 4.4 seconds and a combined fuel economy of 24 MPG.
| Name | Invoice Price | MSRP | Number of Listings |
|---|---|---|---|
| Premium Plus quattro 4dr Sedan AWD (3.0L 6cyl Turbo 8A) | $47802 | $51400 | 139 Listings |
| Prestige quattro 4dr Sedan AWD (3.0L 6cyl Turbo 8A) | $51894 | $55800 | 76 Listings |