The 2020 Mercedes-Benz GLS 400 has the following specifications:
- Engine: 2925 cc, 6-cylinder inline, turbocharged I6
- Power: 326 brake horsepower at 3600 rpm
- Torque: 700 newton meters at 1200 rpm
- Transmission: 9-speed automatic with paddle shift and sport mode
- Top speed: 238 kilometers per hour
- Acceleration: 0–100 kilometers per hour in 6.3 seconds
- Fuel economy: 12.5 kilometers per liter
- Driving range: 1125 kilometers
- Suspension: Air suspension with adaptive damping
- Brakes: Ventilated discs
- Wheels: Alloy wheels
- Seating: 7-person, 3 rows
- Boot space: 493 liters
- Emission standard: BS 6