Mercedes-Benz 420-Class vs Mercedes-Benz SL-Class 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
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User Ranking Drivers and owners ranked these cars in 9 categories.

Used Car Pricing Used listing price comparison and analysis.

1991 Mercedes-Benz 420-Class
4 Dr 420SEL Sedan
CarGurus Instant Market Value
$63,950
6 listings nationwide

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2020 Mercedes-Benz SL-Class
SL 450 RWD
CarGurus Instant Market Value
$100,375
10 listings nationwide

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Expert Reviews Reviews from CarGurus experts.

1991 Mercedes-Benz 420-Class
4 Dr 420SEL Sedan

If legroom is what you crave in a luxury automobile, then the 1991 Mercedes-Benz 420-Class, and specifically the 420SEL, might just be what you're looking for, especially if you're see...

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...

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

1991 Mercedes-Benz 420-Class
4 Dr 420SEL Sedan
105
Michael 1991 Mercedes-Benz 420-Class 4 Dr 420SEL SedanReview:

Fantastic Black Beauty — This car has remained in great shape. Garaged most of it's life and still looks new. This car has be...

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

45
Frank3555 1991 Mercedes-Benz 420-Class 4 Dr 420SEL SedanReview:

Dream Car — love the car its a beauty noproblems except new waterpump performancenails it everytime not lackin t...

Primary Use: Family transportation

migration_stangar2 1991 Mercedes-Benz 420-Class 4 Dr 420SEL SedanReview:

Elegant And Lovely To Drive — Just ran my 87 420sel to Yucatan. 2900mls took 8 days. 178000 mls on it. Changed the chain guides b...

Owner for 1 years, 0 months

Miles Driven per Year:15,000

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"

Specs

1991 Mercedes-Benz 420-Class
4 Dr 420SEL Sedan
2020 Mercedes-Benz SL-Class
SL 450 RWD
Powertrain 4-Speed Automatic 9-Speed Automatic
Drivetrain
RWD
RWD
Fuel Economy, City
14 MPG
20 MPG
Fuel Economy, Highway
17 MPG
28 MPG
Fuel Tank Volume 23 gal 19.8 gal
Engine
Fuel Type
Gasoline
Gasoline
Power
201 hp @ 5,200 RPM
362 hp @ 5,000 RPM
Torque
228 lb-ft @ 3,600 RPM
369 lb-ft @ 1,500 RPM
Cylinders
8 cylinders
6 cylinders
Compression Ratio
--
10.5:1
Displacement
4,200 cc
3,000 cc
Bore x Stroke
--
3.46 in x 3.23 in
Safety
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Curtain Airbags -- Standard
NHTSA Crash Test Results
Comfort and Convenience
Sunroof/Moonroof Optional Standard
Leather Seats Standard Standard
Air Conditioning Standard Standard
CD Player -- Standard
CD Changer -- Standard
Cassette Player 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 2 seats
Front Legroom 41.9 in 53.6 in
Back Legroom 39.6 in --
Payload and Towing
Cargo Volume -- 8.5 cu ft
Exterior
Length 208.1 in 182.3 in
Width 71.7 in 82.6 in
Height 56.7 in 51.2 in
Wheelbase 121.1 in 101.8 in

Available Options

1991 Mercedes-Benz 420-Class
4 Dr 420SEL Sedan
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, 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
  • Magic Sky Control
  • Wheels: 19" AMG Multi-Spoke Alloy

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