Mercedes-Benz SL-Class vs Porsche 911 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.

2019 Mercedes-Benz SL-Class
SL 450 RWD
Thom Blackett Preview:

Mercedes is a brand with a rich history, one that has included different generations of the SL-Class since the 1950s. The current iteration was refreshed for 2017 and returns for 2019 ...

2020 Porsche 911
Carrera 4S Cabriolet AWD
Andrew Newton Preview:

The highly anticipated eighth-generation version of the Porsche 911, known as the 992, debuts for 2020. The 911, available as a coupe or a cabriolet, comes in rear-wheel drive (RWD) Ca...

Specs

2019 Mercedes-Benz SL-Class
SL 450 RWD
2020 Porsche 911
Carrera 4S Cabriolet AWD
Powertrain 9-Speed Automatic 8-Speed Dual Clutch
Drivetrain
RWD
AWD
Fuel Economy, City
20 MPG
--
Fuel Economy, Highway
28 MPG
--
Fuel Tank Volume 19.8 gal 17.6 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
362 hp @ 5,000 RPM
443 hp @ 6,500 RPM
Torque
369 lb-ft @ 1,500 RPM
390 lb-ft @ 2,300 RPM
Cylinders
6 cylinders
6 cylinders
Compression Ratio
10.5:1
10.2:1
Displacement
3,000 cc
3,000 cc
Bore x Stroke
3.46 in x 3.23 in
3.58 in x 3.01 in
Safety
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Front Side Airbags Standard --
Curtain Airbags Standard Standard
NHTSA Crash Test Results
Comfort and Convenience
Sunroof/Moonroof Standard --
Leather Seats 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 2 seats 4 seats
Front Legroom 42.9 in --
Back Legroom -- --
Payload and Towing
Cargo Volume 8.5 cu ft 4.6 cu ft
Maximum Payload -- 912 lbs
Exterior
Length 182.3 in 177.9 in
Width 82.6 in 79.7 in
Height 51.2 in 51.2 in
Wheelbase 101.7 in 96.5 in

Available Options

2019 Mercedes-Benz SL-Class
SL 450 RWD

Exterior Colors

  • Black
  • Brilliant Blue Metallic
  • DESIGNO Cardinal Red Metallic
  • DESIGNO Diamond White Metallic
  • Designo Diamond White Metallic
  • Designo Selenite Grey Magno
  • Dolomite Brown Metallic
  • Graphite Grey Metallic
  • Iridium Silver Metallic
  • Obsidian Black Metallic
  • Polar White
  • Selenite Grey Metallic

Option Packages

  • Bang & Olufsen BEOSOUND Premium Sound System
  • Active Body Control (ABC)
  • Silver Seat Belts
  • Designo Black Piano Lacquer Trim
  • Designo Champagne White Lacquer Trim
  • Designo Classic Red Leather Package
  • Red Seat Belts
  • Wood/Leather Steering Wheel
  • DEISGNO Platinum White/Black Leather Package
  • DESIGNO Deep White/Black Leather Package
  • DESIGNO Light Brown/Black Leather Package
  • DESIGNO Platinum White/Black Leather Package
  • DESIGNO Sand/Black Leather Package
  • DESIGNO Sienna Brown/Black Leather Package
  • DESIGNO Titanium Grey Pearl/Black Leather Package
  • DESIGNO Tuscany Beige Pearl/Black Leather Package
  • Driver Assistance Package
  • Premium Package
  • AMG Carbon Fiber Trim
  • Designo Bamboo Trim
  • Bengal Red/Black, Exclusive Nappa Leather Upholstery
  • Black, Exclusive Nappa Leather Upholstery
  • Black, Nappa Leather Upholstery
  • Ginger Beige/Espresso, Exclusive Nappa Leather Upholstery
  • Porcelain/Black, Exclusive Nappa Leather Upholstery
  • Porcelain/Black, Nappa Leather Upholstery
  • Saddle Brown/Black, Exclusive Nappa Leather Upholstery
  • Bengal Red/Black, Nappa Leather Upholstery
  • Ginger Beige/Espresso, Nappa Leather Upholstery
  • Saddle Brown/Black, Nappa Leather Upholstery
  • Multifunction Sport Steering Wheel
  • Magic Sky Control
  • Wheels: 19" AMG Multi-Spoke Alloy
2020 Porsche 911
Carrera 4S Cabriolet AWD

Exterior Colors

  • Agate Grey Metallic
  • Aventurine Green Metallic
  • Black
  • Carmine Red
  • Carrara White Metallic
  • Chalk
  • Custom Color
  • Dolomite Silver Metallic
  • GT Silver Metallic
  • Gentian Blue Metallic
  • Guards Red
  • Jet Black Metallic
  • Lava Orange
  • Lizard Green
  • Miami Blue
  • Night Blue Metallic
  • Racing Yellow
  • White

Option Packages

  • Bose Surround Sound System
  • Porsche Active Suspension Management (PASM)
  • Illuminated Door-Sill Guards in Brushed Aluminum
  • Illuminated Door-Sill Guards in Carbon Fiber
  • SportDesign Side Skirts
  • Seat Belts in Bordeaux Red
  • Seat Belts in Chalk
  • Interior Trim in Carbon Fiber
  • Adaptive Cruise Control (Acc)
  • BURMESTER High-End Surround Sound-System
  • Brake Calipers In High Gloss Black
  • Comfort Access
  • Front & Rear PARKASSIST W/Surround View
  • Front Axle Lift System
  • Heated Multifunction GT Sport Steering Wheel
  • ILLUM. Personalized Door-Sill Guards In Carbon Fiber
  • Illuminated Personalized Door-Sill Guards
  • Interior Trim In Brushed Aluminum
  • Interior Trim In Leather
  • Interior Trim In Light Silver DIAMAR
  • Interior Trim In PALDAO
  • Interior Trim Painted In Exterior Color
  • Lane Change Assist (LCA)
  • Lane Keep Assist (LKA) W/Traffic Sign Recognition
  • Led-Matrix Headlights
  • Light Design Package
  • Multifunction GT Sport Steering Wheel In Alcantara
  • Night Vision Assist
  • Porsche Ceramic Composite Brakes (PCCB)
  • Porsche Ceramic Composite Brakes (PCCB) In Black
  • Porsche Dynamic Chassis Control (PDCC)
  • Porsche Dynamic Light System Plus (PDLS+)
  • Premium Package
  • Protection Film - Front
  • Rear Axle Steering
  • Seat Belts In Agave Green
  • Seat Belts In Guards Red
  • Seat Belts In Lizard Green
  • Seat Belts In Racing Yellow
  • Seat Belts In Silver Grey
  • Seat Belts In Truffle Brown
  • Seat Ventilation
  • Sport CHRONO Package
  • Sport Exhaust System W/Tailpipes In Black
  • Sport Exhaust System W/Tailpipes In Silver
  • Sport Package
  • Sportdesign Front Fascia
  • Sportdesign Package
  • Vehicle Key In Leather W/Key Pouch
  • Vehicle Key Painted W/Key Pouch In Alcantara
  • Vehicle Keys Painted W/1 Key Pouch In Leather
  • Wheels Painted In Exterior Color
  • Wheels Painted In High Gloss Black
  • Wheels Painted In Jet Black Metallic
  • Wheels Painted In Satin Aurum
  • Wheels Painted In Satin Black
  • Wheels Painted In Satin Platinum
  • Agave Green, Club Leather Seat Trim
  • Agave Green, Club Leather Seat Trim W/Chalk Stitching
  • Black, LTHR Seat Trim W/Leather Interior & Chalk Stitching
  • Black, LTHR Seat Trim W/Sport-Tex Centers & Chalk Stitching
  • Black, Leather Seat Trim W/Leather Interior
  • Black, Leather Seat Trim W/Sport-Tex Centers
  • Bordeaux Red, LTHR Seat Trim W/Leather Interior & Chalk Stitching
  • Bordeaux Red, Leather Seat Trim W/Leather Interior
  • Bordeaux Red/Black, Leather Seat Trim W/Two-Tone Leather Interior
  • Chalk/Slate Grey, Leather Seat Trim W/Two-Tone Leather Interior
  • Graphite Blue, LTHR Seat Trim W/Leather Interior & Chalk Stitching
  • Graphite Blue, Leather Seat Trim W/Leather Interior
  • Island Green/Black, Leather Seat Trim W/Two-Tone Leather Interior
  • Mojave Beige/Black, Leather Seat Trim W/Two-Tone Leather Interior
  • Slate Grey, LTHR Seat Trim W/Leather Interior & Chalk Stitching
  • Slate Grey, Leather Seat Trim W/Leather Interior
  • Truffle Brown, Club Leather Seat Trim
  • Truffle Brown, Club Leather Seat Trim W/Chalk Stitching
  • 14-Way Power Sport Seats W/Memory Package
  • 18-Way Adaptive Sport Seats Plus W/Memory Package
  • HTD Multifunction GT Sport Steering WHL In Alcantara
  • Wheels: 20" Front/21" Rear CARRERA Classic
  • Wheels: 20" Front/21" Rear CARRERA Exclusive Design
  • Wheels: 20" Front/21" Rear RS SPYDER Design

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