Mercedes-Benz S-Class vs Audi S8 Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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New Car Pricing New listing price comparison and analysis.

2021 Mercedes-Benz S-Class
AMG S 63 4MATIC Cabriolet AWD
Invoice
$174,276
Average Price Paid
$185,400
2021 Audi S8
4.0T quattro AWD
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2021 Mercedes-Benz S-Class
AMG S 63 4MATIC Cabriolet AWD
No Data Available
2021 Audi S8
4.0T quattro AWD
No Data Available

Used Car Pricing Used listing price comparison and analysis.

2021 Mercedes-Benz S-Class
AMG S 63 4MATIC Cabriolet AWD
CarGurus Instant Market Value
$185,400
2021 Audi S8
4.0T quattro AWD
CarGurus Instant Market Value
$144,923
3 listings nationwide

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Expert Reviews Reviews from CarGurus experts.

2021 Mercedes-Benz S-Class
AMG S 63 4MATIC Cabriolet AWD
Stephen Edelstein Test Drive Review:

The S-Class not only sits at the top of the Mercedes hierarchy in price and prestige, but it has also long served as a technological showcase. In the press release for the redesigned 2...

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...

No Data Available
  • Look and Feel 7
  • Performance 9
  • Form & Function 8
  • Technology 9
  • Safety 7
  • Cost-Effectiveness 5
No Data Available

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

2021 Mercedes-Benz S-Class
AMG S 63 4MATIC Cabriolet AWD
80
Alen_K_87 writes:
It’s nice overall but the Mercedes price tag isn’t.
2021 Audi S8
4.0T quattro AWD
No User Reviews

Specs

2021 Mercedes-Benz S-Class
AMG S 63 4MATIC Cabriolet AWD
2021 Audi S8
4.0T quattro AWD
Powertrain 9-Speed Automatic 8-Speed Automatic
Drivetrain
AWD
AWD
Fuel Economy, City
14 MPG
13 MPG
Fuel Economy, Highway
24 MPG
22 MPG
Fuel Tank Volume 21.1 gal 21.7 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
603 hp @ 5,500 RPM
563 hp @ 6,000 RPM
Torque
664 lb-ft @ 2,750 RPM
590 lb-ft @ 2,500 RPM
Cylinders
8 cylinders
8 cylinders
Compression Ratio
8.6:1
10.1:1
Displacement
4,000 cc
4,000 cc
Bore x Stroke
3.27 in x 3.62 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 Standard
Curtain Airbags Standard Standard
NHTSA Crash Test Results
Comfort and Convenience
Sunroof/Moonroof -- 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 4 seats 5 seats
Front Legroom -- 41.5 in
Back Legroom -- 44.3 in
Payload and Towing
Cargo Volume 6.9 cu ft 12.5 cu ft
Maximum Payload 921 lbs 970 lbs
Exterior
Length 198.9 in 209 in
Width 83 in 83.9 in
Height 56.2 in 58.6 in
Wheelbase 115.9 in 123.2 in

Available Options

2021 Mercedes-Benz S-Class
AMG S 63 4MATIC Cabriolet AWD

Exterior Colors

  • Anthracite Blue Metallic
  • Black
  • Cirrus Silver Metallic
  • DESIGNO Cashmere White MAGNO
  • Emerald Green Metallic
  • Lunar Blue Metallic
  • MANUFAKTUR Diamond White Metallic
  • Obsidian Black Metallic
  • Rubellite Red Metallic
  • Selenite Grey Metallic

Option Packages

  • Burmester High-End 3D Surround Sound System
  • AMG Carbon Fiber Engine Cover
  • AMG Carbon Fiber/Black Piano Lacquer Trim
  • Designo Black Piano Lacquer Flowing Lines Trim
  • Designo Black Piano Lacquer Trim
  • AMG Ceramic Compound Braking System
  • AMG Exterior Carbon Fiber Package
  • AMG Night Styling Package
  • AMG Performance Steering Wheel In Carbon Fiber
  • AMG Performance Steering Wheel In Nappa/DINAMICA
  • AMG Performance Steering Wheel In Wood/Nappa
  • AMG Red-Painted Brake Calipers
  • Driver Assistance Package
  • Night View Assist Plus
  • SWAROVSKI Crystal Headlamps
  • Warmth & Comfort Package
  • DESIGNO Magnolia Flowing Lines Trim
  • Grey Satin-Finish Ash Wood Trim
  • Bengal Red/Black, DESIGNO Exclusive Nappa Leather Upholstery
  • Black, DESIGNO Exclusive Nappa Leather Upholstery
  • Crystal Grey/Black, DESIGNO Exclusive Nappa Leather Upholstery
  • Porcelain/Deep-Sea Blue, DESIGNO Exclusive Nappa Leather Upholstery
  • Porcelain/Espresso Brown, DESIGNO Exclusive Nappa Leather Upholstery
  • Porcelain/Titian Red, DESIGNO Exclusive Nappa Leather Upholstery
  • Saddle Brown/Black, DESIGNO Exclusive Nappa Leather Upholstery
  • Wheels: 20" AMG 5-Twin-Spoke Forged Silver W/Black
  • Wheels: 20" AMG Forged 10-Spoke Black
  • Wheels: 20" AMG Forged 10-Spoke Silver
  • Wheels: 20" AMG Forged Cross-Spoke Black
  • Wheels: 20" AMG Forged Cross-Spoke Silver
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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