2021 Mercedes-Benz GLS vs 2021 Toyota Highlander Hybrid

The 2021 Mercedes-Benz GLS, a continuation of the third generation introduced in 2020, evolved from the GL-Class, which debuted in 2006. Initially intended to replace the G-Class, the GLS instead attracted a different clientele, offering a luxurious, family-friendly alternative to the Navigator and Escalade. The GLS featured a more refined design with softened angles and a futuristic interior highlighted by a massive digital screen. Available in three trims—GLS 450, GLS 580, and AMG GLS 63—the GLS offered a range of standard features, including remote start, nine USB ports, and a premium sound system. The AMG GLS 63 stood out with aggressive styling and performance-inspired interior elements.

The 2021 Toyota Highlander Hybrid presented a bold design with a distinctive front end and floating roof appearance. Despite its polarizing look, the Highlander aimed to remain recognizable on the road. Offered in LE, XLE, Limited, and Platinum trims, the Highlander Hybrid featured a hybrid powertrain option, enhancing fuel efficiency. The Limited trim, evaluated in this review, included a 12.3-inch touchscreen, electronic all-wheel drive, and leather upholstery. While the interior offered upscale touches, some details, like the instrument-panel shroud, felt less refined. The Highlander Hybrid's design and features aimed to balance style with practicality.

The 2021 Mercedes-Benz GLS offered a range of powerful engines. The GLS 450 featured a 3.0-liter inline-six engine producing 362 horsepower, while the GLS 580 boasted a 4.0-liter V8 with 483 hp. The AMG GLS 63, with its hand-crafted 4.0-liter twin-turbo V8, delivered an impressive 603 hp. All models included Mercedes’ EQ Boost system, adding extra power when needed. The AMG GLS 63 accelerated from 0 to 60 mph in just 4.1 seconds, showcasing remarkable performance for its size. The GLS also featured an adaptive air suspension system, enhancing its handling and ride comfort.

The 2021 Toyota Highlander Hybrid transitioned to a 2.5-liter four-cylinder engine, achieving 36 mpg in combined driving. With a total output of 243 hp, the Highlander Hybrid prioritized efficiency over performance. While it managed hills and freeway speeds, the engine sounded strained under pressure. The steering felt lifeless, but the regenerative brakes performed well. The Highlander Hybrid excelled in fuel economy, though it lacked the driving excitement of its predecessor. Its ride comfort was suitable for smooth roads, but it struggled with more challenging terrain.

The 2021 Mercedes-Benz GLS provided spacious seating across three rows, accommodating up to seven passengers. The front and second rows offered ample space, while the third row was suitable for adults. The GLS boasted 17.4 cubic feet of cargo space behind the third row, expanding to 87.4 cubic feet with seats folded. The interior featured numerous storage compartments, enhancing practicality.

The 2021 Toyota Highlander Hybrid offered comfortable seating for the driver and front passenger, with adjustable power seats and leather upholstery. The second-row bench seat increased capacity to eight but felt cramped for three adults. The third row was less comfortable, with limited legroom and headroom. Cargo space measured 16 cubic feet behind the third row, expanding to 84.3 cubic feet with seats folded. Storage options were adequate but less generous than previous models.

The 2021 Mercedes-Benz GLS featured the MBUX infotainment system with a large touchscreen and voice-control capabilities. It included Apple CarPlay and Android Auto, though required a USB-C connection. The digital dash extended to the instrument panel, offering customizable displays. The system's learning curve was offset by its comprehensive functionality.

The 2021 Toyota Highlander Hybrid came equipped with Bluetooth, Apple CarPlay, Android Auto, and Amazon Alexa. The Limited trim featured a 12.3-inch touchscreen and JBL audio system. The infotainment system was user-friendly, with large controls and effective voice recognition. Additional features included Driver Easy Speak and a video rearview mirror, enhancing convenience and safety.

The 2021 Mercedes-Benz GLS included standard driver-assistance features like Active Brake Assist, blind-spot monitoring, and a surround-view camera. Optional safety tech included lane-keep assist and adaptive cruise control. The GLS provided comprehensive safety equipment, ensuring a secure driving experience.

The 2021 Toyota Highlander Hybrid featured Toyota Safety Sense 2.5+, offering advanced driver-assist technologies. While blind-spot monitoring required an upgrade, the system effectively supported safe driving. The Highlander received a five-star overall rating from NHTSA and was expected to achieve a "Top Safety Pick+" from IIHS.