Audi S6 vs Audi S8 Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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Expert Reviews Reviews from CarGurus experts.

2021 Audi S6
2.9T quattro Premium Plus Sedan AWD
Stephen Edelstein Preview:

Critics complain that the Audi S6 looks too understated, forgetting that some people don’t want to be noticed for what they’re driving. After all, there’s a reason a gray suit is still...

2021 Audi S8
4.0T quattro AWD
Stephen Edelstein Preview:

The Audi S8 full-size luxury sedan was all new for 2020 and carries over mostly unchanged for the 2021 model year, except for minor updates to the features menu. The S8 competes primar...

Specs

2021 Audi S6
2.9T quattro Premium Plus Sedan AWD
2021 Audi S8
4.0T quattro AWD
Powertrain 8-Speed Automatic 8-Speed Automatic
Drivetrain
AWD
AWD
Fuel Economy, City
18 MPG
13 MPG
Fuel Economy, Highway
28 MPG
22 MPG
Fuel Tank Volume 19.3 gal 21.7 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
444 hp @ 5,700 RPM
563 hp @ 6,000 RPM
Torque
443 lb-ft @ 1,900 RPM
590 lb-ft @ 2,500 RPM
Cylinders
6 cylinders
8 cylinders
Compression Ratio
10:1
10.1:1
Displacement
2,900 cc
4,000 cc
Bore x Stroke
3.33 in x 3.39 in
3.39 in x 3.39 in
Safety
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Front Side Airbags Standard Standard
Rear Side Airbags -- Standard
Curtain Airbags Standard Standard
NHTSA Crash Test Results
Comfort and Convenience
Sunroof/Moonroof Standard Standard
Leather Seats Standard Standard
Air Conditioning Standard 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 5 seats
Front Legroom 41.3 in 41.5 in
Back Legroom 37.4 in 44.3 in
Payload and Towing
Cargo Volume 13.7 cu ft 12.5 cu ft
Maximum Payload 1,102 lbs 970 lbs
Exterior
Length 195 in 209 in
Width 83.1 in 83.9 in
Height 56.9 in 58.6 in
Wheelbase 115.3 in 123.2 in

Available Options

2021 Audi S6
2.9T quattro Premium Plus Sedan AWD

Exterior Colors

  • Avalon Green Metallic
  • Brilliant Black
  • Daytona Gray Pearl Effect
  • FLORETT Silver Metallic
  • Firmament Blue Metallic
  • Glacier White Metallic
  • Ibis White
  • Mythos Black Metallic
  • NAVARRA Blue Metallic
  • Tango Red Metallic
  • Vesuvius Gray Metallic

Option Packages

  • Audi Side Assist W/Pre Sense Rear
  • Black Optic Package
  • Luxury Package
  • S Sport Package
  • S6 Executive Package
2021 Audi S8
4.0T quattro AWD

Exterior Colors

  • Brilliant Black
  • Daytona Gray Pearl Effect
  • FLORETT Silver Metallic
  • Glacier White Metallic
  • Monsoon Gray Metallic
  • Moonlight Blue Metallic
  • Mythos Black Metallic
  • NAVARRA Blue Metallic
  • Savannah Beige Metallic
  • Seville Red Metallic
  • Terra Gray Metallic
  • Vesuvius Gray Metallic

Option Packages

  • Bang & Olufsen 3D Advanced Sound System
  • Full Leather Package
  • Night Vision Assistant
  • Black Optic Package
  • Piano Black Interior Package
  • Rear Seat Comfort Package (4 Passenger)
  • Rear Seat Comfort Package (5 Passenger)
  • Red Steel Brake Calipers
  • S8 Executive Package

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