Mercedes-Benz GLS-Class

The 2026 GLS-Class in brief

The 2026 Mercedes-Benz GLS-Class is a standard SUV offered with 2 engines (3.0L 6-cyl turbo and 4.0L 8-cyl turbo), including a hybrid version and all-wheel drive.

It measures about 206 inches long and 80 inches wide on a 123-inch wheelbase, with a curb weight of roughly 6,074 lb (Amg 63 4matic 4dr SUV).

EPA rates its most efficient version at 21 MPG combined (19 city / 24 highway), 5% better than the 2026 standard SUV average of 20 MPG, for an estimated $3,900 a year in fuel.

There are no recalls or owner complaints on file with NHTSA for this model year.

The Mercedes-Benz GLS-Class has 11 model years in our data, from 2017 to 2027.

Its most efficient year was 2027 at 21 MPG combined; across all years the best version ranged from 18 to 21 MPG.

Buying used? 2024 has the fewest problems in our data.

How the 2017 GLS-Class compares

The 2017 Mercedes-Benz GLS-Class is a standard SUV offered with 3 engines (3.0L 6-cyl turbo, 4.7L 8-cyl turbo and 5.5L 8-cyl turbo) and 4-wheel drive.

It measures about 202 inches long and 76 inches wide on a 121-inch wheelbase, with a curb weight of roughly 5,754 lb (Amg Gls 63 4dr SUV AWD).