Audi S4

The 2021 Audi S4 is a high-performance version of Audi's small sedan, the A4. Powered by a turbocharged 3.0-liter six-cylinder engine, the S4 pumps out 349 horsepower and 369 lb-ft of torque. That's 148 horsepower more than the standard A4 and 88 more than the optional engine in the A4's upgraded 45 TFSI trim.

More than just an A4 with some extra juice, the S4 adds a stiffer sport suspension and some upgraded interior materials to seal the deal. The extra performance doesn't require much of a sacrifice; the S4 is still a comfortable, quiet and easy-to-drive luxury sedan. For a full breakdown of the S4, where we cover everything from comfort to convenience, read our Expert Rating below.

Which S4 does MatoCar recommend?

The 2021 Audi S4 is available in three trim levels: Premium, Premium Plus and Prestige. All three come with a turbocharged 3.0-liter six-cylinder engine (349 horsepower, 369 lb-ft) and an eight-speed automatic transmission. All-wheel drive is standard.

Premium This base trim is well appointed with feature highlights that include:

• Upgraded sport suspension and brakes (compared to the standard A4)
• Sunroof
• Leather and simulated suede upholstery
• Heated front sport seats
• 10.1-inch touchscreen
• Tri-zone automatic climate control
• Apple CarPlay and Android Auto integration (wireless functionality for CarPlay)
• Forward collision mitigation (warns you of an impending collision and applies the brakes in certain scenarios)
• Lane departure warning (alerts you if the vehicle begins to drift out of its lane)

Premium Plus Stepping up to the Premium Plus trim adds:

• Keyless entry
• Digital instrument panel
• Heated steering wheel
• Wireless charging pad with signal booster
• Parking sensors (alert you to obstacles that may not be visible behind or in front of the S4 when parking)
• Surround-view camera system
• Blind-spot monitor with rear cross-traffic alert (warns if a vehicle is in your blind spot during a lane change or while reversing)
• Adaptive cruise control (maintains a driver-set distance between the Audi and the car in front)
• Lane keeping assist (steers the S4 back into its lane if it begins to drift over the lane marker without use of the turn signal)

The top-of-the-line Prestige trim comes with all of the above, plus:

• Upgraded headlights with washers
• Navigation system
• Head-up display
• Heated rear seats
• Bang & Olufsen audio system

Key options for the S4 include:

• Warm Weather package (ventilated front seats, rear window shades)
• S Sport package (adaptive suspension, sport rear differential, red brake calipers)