Auto Guide
2018 Mercedes-Benz SL
Used

Review and specifications

2018 Mercedes-Benz SL

This generation brought a significantly revised car, one that is wider, longer and fitted with a host of high-tech safety features. While we appreciate the outstanding fit, finish and creature comforts, the look of this version of the SL leaves us somewhat cold. The previous design looks much better. With that said, exceptionally powerful turbocharged V8 and V12 engines are offered, along with an adjustable-opacity feature for the folding hardtop. Practically every known electronic driver's assistance safety feature is also available. Ride quality and handling are unsurpassed, with the SL performing like a much smaller and lighter sports car when called upon to do so, while providing outstanding smoothness and ride comfort when it is required.

Market value
$35,225
Fuel
Conventional
Transmission
Automatic
Seats
2
View listings Find dealers
Model year 2018
Owner rating Not rated
Reliability Not rated
Data updated June 4, 2026

At a glance

Model data

Overview

Powertrain
Conventional
Body style
convertible
Drive type
RWD
Transmission
Automatic, 7-speed
Category
Sports cars 4/5-seat
Generation began
2012

Pricing

Current retail median
$35,225
Retail value range
$28,775 - $56,925
Original MSRP range
$88,200 - $222,000
Trade-in range
$25,200 - $51,350

Fuel economy

EPA city
17 MPG
EPA highway
25 MPG
EPA combined
20 MPG

Road tests

Test status
Not Tested

Dimensions

Length
182 in
Width
74 in
Height
51 in
Wheelbase
102 in
Weight
3,960 lb
Towing capacity
0 lb

Interior

Seating
2 people

Environmental impact

Air pollution score
1/10
Greenhouse gas score
4/10
SmartWay
No

Brand context

About Mercedes-Benz

<p>Most Mercedes-Benzes give their owners industry-leading comfort and technology. The cost of that experience is typically a lofty base price with expensive options and below-average reliability. The brand produces a wide variety of vehicles for the U.S., including coupes, sedans, convertibles, and even two-seat sports cars. Some two- and three-row SUVs that we’ve tested have powerful engines and interiors that are roomy and quiet. Generally, Mercedes-Benz fit and finish, inside and out, is exceptional and helps justify prices. Mercedes-Benz’s EVs range from compact to large three-row SUVs. Across the lineup, controls for the complex climate and infotainment systems aren’t as intuitive as we find in other luxury vehicles. Like most European luxury brands, used Mercedes-Benzes can have expensive out-of-warranty repairs.</p>

Vehicle ID: 11964 First published: July 22, 2020 Updated: June 4, 2026

Values may vary by trim, options, location, and market conditions.

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