Skip to main content

2020 Mercedes-Benz GLS 450

Change year or car

Change year or car


starting MSRP

Key specs

Base trim shown


Body style

Combined MPGe Combined MPGe

Miles per gallon-equivalent is how the EPA provides efficiency ratings for battery-electric vehicles in a way that can be used in comparison with gasoline-powered vehicles. Actual mileage will vary depending on driving conditions, driving habits, elevation changes, weather, accessory usage (lights, climate control), vehicle condition and other factors.

Related: Top 10 Most Efficient Electric Cars

Seating capacity

205” x 71.8”


All-wheel drive



The good:

  • Luxurious interior
  • Powerful engines
  • Magical E-Active Body Control system
  • Smooth ride
  • Versatile cabin for people and cargo
  • MBUX multimedia technology

The bad:

  • "Hey Mercedes" accidental activations
  • Touch-sensitive steering-wheel controls
  • Options make a pricey SUV even more dear
  • Unsure what "mild-hybrid" system actually does
  • Some options only available on pricier trim levels
  • V-8 doesn't feel quicker than I-6 engine

1 trim

Starting msrp listed lowest to highest price

Wondering which trim is right for you?

Our 2020 Mercedes-Benz GLS 450 trim comparison will help you decide.

See also: Find the best SUVs for 2024

Notable features

  • Full-size six- or seven-seat luxury three-row SUV
  • Standard all-wheel drive
  • Turbocharged six- and eight-cylinder engines
  • Available E-Active Body Control electronic suspension
  • Standard MBUX multimedia system
  • Sliding second-row seats

Consumer reviews

Rating breakdown (out of 5):
  • Comfort 4.7
  • Interior 4.6
  • Performance 4.5
  • Value 4.1
  • Exterior 4.7
  • Reliability 4.0
Write a review

Most recent consumer reviews


Total loss mine by parking it in the rain

Parked my car in the rain for a few days, with all windows closed. Water somehow got into the car and wet the floor. Believe it or not, almost all the electronics are under the seats. The water ended up damaged all the electronics, resulted in a total loss.


Has Faulty Engineering Design

A four ounce water spill on the floorboard caused an $8k non-warrantied bill. Mercedes located the "Control Unit Computer" under the carpet on the floor.


Update Review...10,000 miles later

I wrote a previous review shortly after we took ownership. A few issues I think are important...not sure they feel the same. Dashboard screen is HOT to the touch. Service Dept did not seem to think it was a problem. Took SUV in for 10,000 mile first service. I was told the Cooper Tires needed to be replaced. After 10,000 miles? Unacceptable. My dealer has agreed to replace all four tires for which I am grateful...but is this going to be an ongoing problem? I've owned many vehicles and normally get 40- 50 thousand miles on a set of tires. Not sure what our next step will be, Spouse wants to trade...I love the car but do not want continual problems. dealer was very accomodating after several phone calls. They are not the problem....may be the car.

See all 21 consumer reviews


New car and Certified Pre-Owned programs by Mercedes-Benz
New car program benefits
48 months/50,000 miles
48 months/50,000 miles
48 months/50,000 miles
Roadside assistance
48 months/50,000 miles
Certified Pre-Owned program benefits
Maximum age/mileage
6 years old or less/less than 75,000 miles
Basic warranty terms
1 year/unlimited miles
1 year/unlimited miles
Dealer certification required
164-point inspection
Roadside assistance
View all cpo program details

Have questions about warranties or CPO programs?

Compare the competitors