Mercedes-Benz C-Class vs Audi S5 Sportback 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 C-Class
C 300 4MATIC Cabriolet AWD
MSRP
$56,700
Invoice
$53,298
Average Price Paid
$53,620
124 listings nationwide

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2021 Audi S5 Sportback
3.0T quattro Premium AWD
Incentives Find if there are incentives in your area. Enter your zip code
2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
No Data Available
2021 Audi S5 Sportback
3.0T quattro Premium AWD
No Data Available

Expert Reviews Reviews from CarGurus experts.

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
No Expert Reviews
2021 Audi S5 Sportback
3.0T quattro Premium AWD
Stephen Edelstein Preview:

A compromise wasn’t always a bad thing, but in the world of sport sedans, it seems like any decision that doesn’t get you a better zero to 60 mph time, a more impressive skidpad number...

Specs

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD
2021 Audi S5 Sportback
3.0T quattro Premium AWD
Powertrain 9-Speed Automatic 8-Speed Automatic
Drivetrain
AWD
AWD
Fuel Economy, City
22 MPG
20 MPG
Fuel Economy, Highway
30 MPG
28 MPG
Fuel Tank Volume 17.4 gal 15.3 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
255 hp @ 5,800 RPM
349 hp @ 5,400 RPM
Torque
273 lb-ft @ 1,800 RPM
369 lb-ft @ 1,370 RPM
Cylinders
4 cylinders
6 cylinders
Compression Ratio
10.5:1
11.2:1
Displacement
2,000 cc
3,000 cc
Bore x Stroke
3.27 in x 3.62 in
3.33 in x 3.5 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
Leather Seats -- 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 42 in 41.3 in
Back Legroom 32 in 35.1 in
Payload and Towing
Cargo Volume 8.8 cu ft 21.8 cu ft
Maximum Payload 882 lbs 1,058 lbs
Exterior
Length 184.5 in 187.2 in
Width 79.4 in 79.9 in
Height 55.8 in 54.6 in
Wheelbase 111.8 in 111.2 in

Available Options

2021 Mercedes-Benz C-Class
C 300 4MATIC Cabriolet AWD

Exterior Colors

  • Black
  • Brilliant Blue Metallic
  • DESIGNO Cardinal Red Metallic
  • DESIGNO Diamond White Metallic
  • Graphite Grey Metallic
  • Iridium Silver Metallic
  • Lunar Blue Metallic
  • Mojave Silver Metallic
  • Obsidian Black Metallic
  • Polar White
  • Selenite Grey Metallic

Option Packages

  • AMG Line
  • DESIGNO Bengal Red Nappa Leather Package
  • Driver Assistance Package
  • Exterior Lighting Package
  • Head-Up Display
  • MB Entry Navigation
  • Multimedia Package
  • Parking Assistance Package
  • Black, Leather Upholstery
  • Cranberry Red, Leather Upholstery
  • Magma Grey/Black, Leather Upholstery
  • Porcelain/Black, Leather Upholstery
  • Saddle Brown/Black, Leather Upholstery
  • Wheels: 19" 10-Spoke
  • Wheels: 19" AMG MULTISPOKE
  • Wheels: 19" AMG MULTISPOKE W/Black Accents
  • Wheels: 19" AMG Twin 5-Spoke W/Black Accents
  • Wheels: 19" Twin 5-Spoke
2021 Audi S5 Sportback
3.0T quattro Premium AWD

Exterior Colors

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

Option Packages

  • Carbon Fiber Package
  • Carbon Fiber Trunk Lid Spoiler
  • Convenience Package
  • Sport Exhaust Resonator
  • Wheels: 19" 5-Double-Arm Design Bi-Color Finish

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