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

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2020 Mercedes-Benz SL-Class SL 450 RWD
Photo of 2019 model year shown

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User Ranking Drivers and owners ranked these cars in 9 categories.

Used Car Pricing Used listing price comparison and analysis.

2020 Mercedes-Benz SL-Class
SL 450 RWD
CarGurus Instant Market Value
$99,721
11 listings nationwide

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2009 Cadillac XLR
Platinum Edition RWD
CarGurus Instant Market Value
$27,996
2 listings nationwide

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Expert Reviews Reviews from CarGurus experts.

2020 Mercedes-Benz SL-Class
SL 450 RWD
Cherise Threewitt Preview:

The Mercedes-Benz SL-Class is a smooth, spacious, and sporty roadster with a long history. The current generation, which dates back to 2013, was refreshed in 2017 and carries over larg...

2009 Cadillac XLR
Platinum Edition RWD

With few updates since its introduction in 2004, the Cadillac XLR roadster desperately needed a pick-me-up. The 2009 version gets it, with a facelift based on the CTS sports sedan and ...

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

2020 Mercedes-Benz SL-Class
SL 450 RWD
Guru137QX writes:
Back Seats Ranked 2019 Mercedes-Benz E-Class E 450 Cabriolet RWD better.
" E-Class has 4 seats SL 450 only has 2 seats"
Value Ranked 2019 Mercedes-Benz E-Class E 450 Cabriolet RWD worse.
"Only depends what you are looking for, a family or just 2 people"
2009 Cadillac XLR
Platinum Edition RWD
10
GuruDHXJZ writes:
Beautiful car; such a shame Cadillac quit producing.
95
Mohammad 2009 Cadillac XLR Platinum Edition RWDReview:

I Love This Car — Nice looking car, with an impressive V8 4.2 Liter Engine, that makes the car goes so damn fast, it c...

Primary Use: Sport/fun (spirited driving, track racing, off-roading, etc.)

85
pavel150 2009 Cadillac XLR Platinum Edition RWDReview:

Worth The Money, Contemporary Classic — If you are looking for a track car this is not it. But if you need a fast, comfortable, luxurious an...

Primary Use: Sport/fun (spirited driving, track racing, off-roading, etc.)

Specs

2020 Mercedes-Benz SL-Class
SL 450 RWD
2009 Cadillac XLR
Platinum Edition RWD
Powertrain 9-Speed Automatic 6-Speed Automatic
Drivetrain
RWD
RWD
Fuel Economy, City
20 MPG
15 MPG
Fuel Economy, Highway
28 MPG
24 MPG
Fuel Tank Volume 19.8 gal 18 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
362 hp @ 5,000 RPM
320 hp @ 6,400 RPM
Torque
369 lb-ft @ 1,500 RPM
310 lb-ft @ 4,400 RPM
Cylinders
6 cylinders
8 cylinders
Compression Ratio
10.5:1
10.5:1
Displacement
3,000 cc
4,600 cc
Bore x Stroke
3.46 in x 3.23 in
3.66 in x 3.31 in
Safety
ABS Brakes Standard Optional
Driver Airbag Standard Optional
Passenger Airbag Standard Optional
Front Side Airbags -- Optional
Curtain Airbags Standard --
NHTSA Crash Test Results
Comfort and Convenience
Sunroof/Moonroof Standard --
Leather Seats Standard Optional
Air Conditioning Standard Optional
CD Player Standard Optional
CD Changer Standard Optional
Radio Standard Optional
Power Windows Standard Optional
Power Door Locks Standard Optional
Driver Power Seats Standard Optional
Passenger Power Seats Standard Optional
Interior
Maximum Seating 2 seats 2 seats
Front Legroom 53.6 in 42.6 in
Back Legroom -- --
Payload and Towing
Cargo Volume 8.5 cu ft 4.4 cu ft
Exterior
Length 182.3 in 177.7 in
Width 82.6 in 72.3 in
Height 51.2 in 50.4 in
Wheelbase 101.8 in 105.7 in

Available Options

2020 Mercedes-Benz SL-Class
SL 450 RWD

Exterior Colors

  • Black
  • Brilliant Blue Metallic
  • DESIGNO Cardinal Red 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
  • Soft Close Doors
  • Silver Seat Belts
  • AMG Carbon Fiber Trim
  • Designo Black Piano Lacquer Trim
  • Designo Champagne White Lacquer Trim
  • Designo Classic Red Leather Package
  • Red Seat Belts
  • Wood/Leather Steering Wheel
  • AMG Sport Steering Wheel In Leather/DINAMICA
  • Active Body Control (ABC)
  • 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
  • Designo Bamboo Trim
  • Bengal Red/Black, Exclusive Nappa Leather Upholstery
  • Black Perforated 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, Perforated Nappa Leather Upholstery
  • Saddle Brown/Black, Exclusive Nappa Leather Upholstery
  • Bengal Red/Black, Perforated Nappa Leather Upholstery
  • Ginger Beige/Espresso, Perforated Nappa Leather Upholstery
  • Porcelain/Black, Perforated Nappa Leather Upholstery
  • Saddle Brown/Black, Perforated Nappa Leather Upholstery
  • Magic Sky Control
  • Wheels: 19" AMG Multi-Spoke Alloy
2009 Cadillac XLR
Platinum Edition RWD

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