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2021 Mercedes-Benz GLS450 review

Research, photos, specs, and expertise

Mercedes-Benz GLS450 highlights

Customer rating

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)

20 city, 24 highway, 21 combined

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All Mercedes-Benz GLS450 years

What is new for the 2021 Mercedes-Benz GLS450?

  • GLS450 trims have been upgraded with Seat Massagers, A/C Seat(s), and 20 Inch Plus Wheels as standard equipment this year.
  • Run Flat Tires features are now available as options on select trims.

2021 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

1 out of 5

1 customer reviews

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

2021 Mercedes-Benz GLS450 FAQ

Mercedes-Benz GLS450 articles

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