Audi S4 vs Audi RS 4 Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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Used Car Pricing Used listing price comparison and analysis.

2021 Audi S4
3.0T quattro Premium AWD
CarGurus Instant Market Value
$49,900
2008 Audi RS 4
quattro Cabriolet AWD
CarGurus Instant Market Value
$37,250
1 listings nationwide

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Expert Reviews Reviews from CarGurus experts.

2021 Audi S4
3.0T quattro Premium AWD
Cherise Threewitt Preview:

The Audi S4, the performance version of the A4 sedan, is part of a generation that dates back to 2018. Last year, the S4 received styling and tech updates, and this year, it carries ov...

2008 Audi RS 4
quattro Cabriolet AWD

The Audi RS 4, introduced to U.S. shores in 2006 and based on the A4 sedan, represents the high-performance level of the German automakerâ??s compact sports sedan line. For the 2008 mo...

User Reviews Reviews from CarGurus users who have driven or owned the car.

2021 Audi S4
3.0T quattro Premium AWD
No User Reviews
2008 Audi RS 4
quattro Cabriolet AWD
35
RS4guy writes:
All around usability, a renaissance car so to speak. AWD, back seats, V8, great handling, good looks.
25
Niall 2008 Audi RS 4 quattro Cabriolet AWDReview:

Fast Car — fast

35
Henrik 2008 Audi RS 4 quattro Cabriolet AWDReview:

Very Nice Car — WELL it is a very nice car. Very fast. does not coast very much.

Specs

2021 Audi S4
3.0T quattro Premium AWD
2008 Audi RS 4
quattro Cabriolet AWD
Powertrain 8-Speed Automatic 6-Speed Manual
Drivetrain
AWD
AWD
Fuel Economy, City
20 MPG
12 MPG
Fuel Economy, Highway
28 MPG
19 MPG
Fuel Tank Volume 15.3 gal 16.6 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
349 hp @ 5,400 RPM
420 hp @ 7,800 RPM
Torque
369 lb-ft @ 1,370 RPM
317 lb-ft @ 5,500 RPM
Cylinders
6 cylinders
8 cylinders
Compression Ratio
11.2:1
12.5:1
Displacement
3,000 cc
4,200 cc
Bore x Stroke
3.33 in x 3.5 in
3.33 in x 3.65 in
Safety
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Front Side Airbags Standard Standard
Curtain Airbags Standard Standard
NHTSA Crash Test Results
Front Driver -- 4 stars
Front Passenger -- 4 stars
Side Driver -- 5 stars
Side Rear Passenger -- 4 stars
Rollover (pre-2011) -- 4 stars
Comfort and Convenience
Sunroof/Moonroof Standard Standard
Leather Seats Standard Standard
Air Conditioning Standard Standard
CD Player Standard Standard
CD Changer -- Standard
Radio Standard Standard
Power Windows Standard Standard
Power Door Locks Standard Standard
Driver Power Seats Standard Standard
Passenger Power Seats Standard Standard
Interior
Maximum Seating 5 seats 4 seats
Front Legroom 41.3 in 41.3 in
Back Legroom 35.7 in 32.4 in
Payload and Towing
Cargo Volume 12 cu ft 11.1 cu ft
Maximum Payload 1,058 lbs --
Exterior
Length 187.5 in 179.3 in
Width 79.6 in 76.1 in
Height 56.2 in 54.8 in
Wheelbase 111 in 104.3 in

Available Options

2021 Audi S4
3.0T quattro Premium AWD

Exterior Colors

  • Daytona Gray Pearl Effect
  • Glacier White Metallic
  • Ibis White
  • Mythos Black Metallic
  • NAVARRA Blue Metallic
  • Quantum Gray
  • Tango Red Metallic
  • Turbo Blue

Option Packages

  • Carbon Fiber Spoiler
  • Carbon Fiber Spoiler & Mirror Caps W/Side Assist
  • Convenience Package
  • Sport Exhaust Resonator
  • Wheels: 19" 5-Arm-TORSIO Design
2008 Audi RS 4
quattro Cabriolet AWD

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