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2020 Mercedes-Benz GLS450 review

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Mercedes-Benz GLS450 highlights

Customer rating

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RepairPal reliability rating

RepairPal Reliability Ratings are based on the actual cost, frequency, and severity of unscheduled repairs and maintenance on make/model data for select 2008-2022 vehicles. The reliability of a specific vehicle may vary depending on its maintenance and driving history, model year, trim, and features. RepairPal Reliability Ratings are provided by RepairPal and CarMax is not responsible for their accuracy. These ratings are based on RepairPal Reliability data as of August 2023. Learn more about RepairPal reliability ratings

Mileage (EPA estimate)

19 city, 23 highway, 21 combined

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What is new for the 2020 Mercedes-Benz GLS450?

  • The Grand Edition trim has been discontinued for 2020.
  • GLS450 trims have been upgraded with Automated Parking, Parking Sensors, Blind Spot Monitor, Android Auto, Satellite Radio Ready, Burmester Audio, and Apple CarPlay as standard equipment this year.
  • Rear A/C Seat(s), Quad Seats, and Head Up Display features are now available as options on select trims.

2020 Mercedes-Benz GLS450 trims

Curious how Mercedes-Benz GLS450 trims differ? Use our side-by-side vehicle comparison to see the differences and similarities

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Ratings & reliability

Customer ratings

The 2020 Mercedes-Benz GLS450 is not yet rated. Help future customers learn about a car you've owned and write a review.

RepairPal reliability rating

RepairPal Reliability Ratings are based on the actual cost, frequency, and severity of unscheduled repairs and maintenance on make/model data for select 2008-2022 vehicles. The reliability of a specific vehicle may vary depending on its maintenance and driving history, model year, trim, and features. RepairPal Reliability Ratings are provided by RepairPal and CarMax is not responsible for their accuracy. These ratings are based on RepairPal Reliability data as of August 2023. Learn more about RepairPal reliability ratings

3
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Above Average

RepairPal gave the Mercedes-Benz GLS450 an overall reliability rating of 3.5 out of 5 stars, which RepairPal describes as Above Average. This rating ranks Mercedes-Benz GLS450 5th out of 20 among Luxury Fullsize SUVs.

View RepairPal's full rating of the Mercedes-Benz GLS450

2020 Mercedes-Benz GLS450 FAQ

Mercedes-Benz GLS450 articles

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Statements of fuel economy or EV range are based on EPA and other third-party estimates for vehicles when new. Fuel economy and EV range will degrade with time and vary based on age, driving conditions, vehicle history, and other conditions. See fueleconomy.gov for more info.

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