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2018 Mercedes-Benz CLS 550

$75,150 — $77,650 MSRP
4 Seats
20-21 MPG
Key specs of the base trim
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Is this the car for you?
(5.0) 1 reviews

The Good

  • Ride comfort
  • Power
  • Front-seat comfort
  • Exhaust sound (AMG)

The Bad

  • Long rear doors
  • Adjustable suspension needs more variability (AMG)
  • Grabby brakes (AMG)
2018 Mercedes-Benz CLS 550 exterior side view

What to Know

about the 2018 Mercedes-Benz CLS 550
  • Backup camera now standard
  • Four doors, coupe profile
  • Twin-turbo V-8 engines
  • Seven- or nine-speed automatic transmission
  • Rear- or all-wheel drive

Our Take

from the expert editorial team

What it is: The original Mercedes CLS-Class revolutionized modern automotive design by promising the sporty dynamics of a coupe with a dash of sedan practicality. The four-door, four-seat CLS is available in two models: the CLS550 and the performance-oriented AMG CLS63. The CLS550 comes with a turbocharged 4.7-liter V-8, a nine-speed automatic transmission and a choice of rear- or all-wheel drive. The CLS63 packs a 5.5-liter V-8 and comes only with all-wheel drive.

Prime competitors include the Audi A7, BMW 6 Series Gran Coupe and Porsche Panamera. A redesigned CLS arrives for the 2019 model year.

New for 2018

A backup camera is now standard.


The AMG CLS63 performance car has all-wheel drive and is powered by a hand-built twin-turbo 5.5-liter V-8 engine that's rated at 577 horsepower. 

What's Special

  • Seven-speed automatic transmission with aluminum shift paddles
  • Adaptive sport suspension
  • AMG sport exhaust system
  • Available carbon-fiber trim

Consumer Reviews

What drivers are saying

1 review — Read All reviews
Exterior Styling
Interior Design
Value For The Money

beauty and performance

by AVP from kentfield on June 11, 2018

This is a great car. It has been reliable and has great style. No major issues. Solid, quiet, smooth and has major engine power when needed. Read full review


Recalls and crash tests


The 2018 Mercedes-Benz CLS 550 currently has 0 recalls

Crash and Rollover Test Ratings

The 2018 Mercedes-Benz CLS 550 has not been tested.

Latest 2018 CLS 550 Stories

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All Model Years for the Mercedes-Benz CLS 550

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0 / 0 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 CLS 550 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