The 2023 Mercedes-Benz GLS is a luxury SUV that prioritizes performance, comfort, and technological innovation. It is available in three trims: GLS 450, GLS 580, and the high-performance GLS 63 AMG. The GLS 450 and GLS 580 variants come with a turbocharged 3.0-liter inline-six delivering 362 hp and a twin-turbo 4.0-liter V8 offering 483 horsepower, respectively. Both are assisted by a 48-volt mild-hybrid system. The GLS 63 AMG trim boasts a more powerful 4.0-liter V8 outputting a monstrous 603 hp. A nine-speed automatic transmission is standard across all trims, paired with 4MATIC all-wheel drive. Inside, the GLS features a commanding twin 12.3-inch digital display for the instrument panel and infotainment system, offering Apple CarPlay, Android Auto, and MBUX voice control. Safety innovations include active brake assist, attention assist, and an optional driver assistance package for advanced features.