2018 Mercedes-Benz SL 450

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2018 Mercedes-Benz SL 450
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Key Specs
Our Take
Overview
Photos
Reviews
Safety & Recalls
Warranty & CPO
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Key Specs

of the 2018 Mercedes‑Benz SL 450. Base trim shown.

  • Body Type:
    Convertible See similar vehicles
  • Engine:
    362-hp, 3.0-liter V-6 (premium)
  • Drivetrain:
    Rear-wheel Drive
  • Seating:
    2 Seats
  • Transmission:
    9-speed automatic w/OD and auto-manual
  • View more specs

Our Take

From the Cars.com Vehicle Test Team

The Good

  • Acceleration
  • Comfortable ride
  • Magic Sky Control roof
  • Trunk accessibility

The Bad

  • A bit noisy inside for a hardtop
  • Heavy
  • Understeer

Notable Features of the 2018 Mercedes-Benz SL 450

  • V-6, V-8 and V-12 engines
  • Backup camera now standard
  • Retractable-hardtop convertible
  • Two seats
  • AMG performance versions
  • Hands-free trunk-lid operation standard

2018 Mercedes-Benz SL 450 Overview

By Cars.com Editors
Vehicle Overview

What it is: The two-seat Mercedes-Benz SL-Class, a retractable-hardtop convertible, is constructed mostly of aluminum and equipped with a choice of V-6 or V-8 engines in luxury guise, and with V-8 or V-12 power in AMG performance models. The SL competes with the BMW 6 Series.

New for 2018

A backup camera and side mirrors that project the Mercedes-Benz logo are now standard.

AMG SL63, SL65

AMG performance versions of the SL-Class are available with a choice of power output. The SL63 uses a twin-turbocharged 5.5-liter V-8 engine that produces 577 horsepower and 664 pounds-feet of torque. The SL65 boasts a 621-hp, twin-turbo 6.0-liter V-12 engine that sends 738 pounds-feet of torque to the rear wheels. Both use a seven-speed automatic transmission. Mercedes says the SL65 can go from zero-to-60 mph in just 3.9 seconds. 

What's Special

  • Seven-speed automatic transmission with driver-initiated shift modes
  • AMG-specific LED daytime running lamps 
  • AMG rear spoiler 
  • Heated, ventilated and massaging seats

View 19 Photos

Consumer Reviews

4.8
5 reviews
Exterior Styling
(4.8)
Performance
(4.8)
Interior Design
(4.6)
Comfort
(5.0)
Reliability
(4.8)
Value For The Money
(4.2)

What Drivers Are Saying

(4.0)

An amazing V6 Grand Tourer!

by Josephus from Greater Dallas Area on February 20, 2018

Excellent performing V6. And I say this after having owned an AMG SLK, an SL500 and an SL550. This one handles better than any of those 3, is an excellent performer (albeit, of course, not quite as ... Read full review

(5.0)

New 2018 SL450

by JD3 from San Clemente,CA on February 20, 2018

Very happy with the '17 to date refresh of the R231 SL series. The new front facial treatment is much more sleek and balanced that the original take from the 2013 entry. New 9 speed transmission is so ... Read full review

Safety & Recalls

Recalls

The 2018 Mercedes-Benz SL 450 currently has 0 recalls

Crash and Rollover Test Ratings

The 2018 Mercedes-Benz SL 450 has not been tested.

Manufacturer Warranty

  • Bumper-to-Bumper

    48 months / 50,000 miles

  • Powertrain

    48 months / 50,000 miles

  • Roadside Assistance

    48 months / 50,000 miles

CPO Program & Warranty

Certified Pre-Owned by Mercedes-Benz

Program Benefits

24-hour roadside assistance, trip-interruption services, trip-planning services and Carfax vehicle history report

  • Limited Warranty

    5 years / Unlimited Miles*

    Up to 5 years/Unlimited miles from original in-service date if purchased while under original warranty, or 1 year/Unlimited miles if purchased outside of new-vehicle warranty; no deductible, transferable to subsequent owners

  • Eligibility

    Under 6 years / 75,000 miles

    Vehicles receive a Rigorous inspection by factory-certified technicians.

Have Questions about warranties or CPO programs?

See Warranty FAQs

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Cars.com Car Seat Check

Certified child passenger safety technicians conduct hands-on tests of a car’s Latch system and check the vehicle’s ability to accommodate different types of car seats. The SL 450 received the following grades on a scale of A-F.*
* This score may not apply to all trims, especially for vehicles with multiple body styles that affect the space and design of the seating.

Warranty FAQs

What is a Bumper-to-Bumper warranty?

Often called a basic warranty or new-vehicle warranty, a bumper-to-bumper policy covers components like air conditioning, audio systems, vehicle sensors, fuel systems and major electrical components. Most policies exclude regular maintenance like fluid top offs and oil changes, but a few brands have separate free-maintenance provisions, and those that do offer them is slowly rising. Bumper-to-bumper warranties typically expire faster than powertrain warranties.

What is a Powertrain warranty?

Don't be misled a 10-year or 100,000-mile powertrain warranty doesn't promise a decade of free repairs for your car. It typically covers just the engine and transmission, along with any other moving parts that lead to the wheels, like the driveshaft and constant velocity joints. Some automakers also bundle seat belts and airbags into their powertrain warranties. With a few exceptions, powertrain warranties don't cover regular maintenance like engine tuneups and tire rotations.

What is included in Roadside Assistance?

Some automakers include roadside assistance with their bumper-to-bumper or powertrain warranties, while others have separate policies. These programs cover anything from flat-tire changes and locksmith services to jump-starts and towing. Few reimburse incidental costs like motel rooms (if you have to wait for repairs).

What other services could be included in a warranty?

Some automakers include free scheduled maintenance for items such as oil changes, air filters and tire rotations. Some include consumables including brake pads and windshield wipers; others do not. They are typically for the first couple of years of ownership of a new car.

What does CPO mean?

A certified pre-owned or CPO car has been inspected to meet minimum quality standards and typically includes some type of warranty. While dealers and third parties certify cars, the gold standard is an automaker-certified vehicle that provides a factory-backed warranty, often extending the original coverage. Vehicles must be in excellent condition and have low miles and wear to be certified, which is why off-lease vehicles feed many CPO programs.

See also the latest CPO incentives by automaker