2020 INFINITI QX80 vs 2021 Mercedes-Benz GLS

The 2020 INFINITI QX80 was a flagship SUV in Infiniti’s lineup, known for its substantial size compared to the two-row QX50 and three-row QX60. It was available in two trim levels: Luxe and Limited. The QX80's exterior had been refreshed in 2018, giving it a more commanding presence with modern features such as LED headlights, adaptive front lighting, and power-folding mirrors. The interior boasted soft-touch materials and a revised infotainment system, though some trim pieces fell short compared to competitors. The cabin offered three interior color schemes and was generally attractive, despite the piano-black plastic center stack being prone to fingerprints.

The 2021 Mercedes-Benz GLS, part of the third generation introduced in 2020, carried over with a more svelte appearance than its predecessors. It featured a futuristic cabin highlighted by a massive digital screen spanning much of the dash, emphasizing its tech-reliant controls. Available in three levels—GLS 450, GLS 580, and AMG GLS 63—the GLS offered a range of standard features, including remote keyless entry, dual-zone climate control, and a 13-speaker Burmester sound system. The AMG GLS 63 stood out with aggressive bodywork and a performance-inspired interior, including a flat-bottomed sport steering wheel.

The 2020 INFINITI QX80 was powered by a 5.6-liter V8 engine, delivering 400 horsepower and 413 pound-feet of torque, paired with a seven-speed automatic transmission. Despite its heavy build, the QX80's powertrain managed the load well, though its fuel efficiency was lacking, with the RWD model achieving 14 mpg city and 20 mpg highway. The QX80 offered Normal, Snow, and Mud drive modes, and its optional Hydraulic Body Motion Control system enhanced stability. It had a towing capacity of 8,500 pounds and came with a standard rear auto-leveling suspension for a smoother ride.

The 2021 Mercedes-Benz GLS 450 featured a twin-turbocharged 3.0-liter inline-six engine with 362 horsepower, while the GLS 580 had a 4.0-liter V8 producing 483 hp. The AMG GLS 63 boasted a hand-crafted 4.0-liter twin-turbo V8 with 603 hp and 627 lb-ft of torque, achieving 0-60 mph in 4.1 seconds. All models included Mercedes’ EQ Boost 48-volt mild-hybrid system, enhancing performance and efficiency. The GLS 63's adaptive air suspension and multiple drive modes provided exceptional handling and a composed ride, even on rough roads.

The 2020 INFINITI QX80 offered plush seating in the first two rows, though the third row was cramped. It accommodated seven passengers with standard captain’s chairs, and the interior featured leather-appointed seats with available semi-aniline leather upholstery. The QX80 provided 16.6 cubic feet of cargo space behind the third row, expanding to 95.1 cubic feet with seats folded. A power liftgate was standard, and the straightforward controls made the infotainment system easy to use.

The 2021 Mercedes-Benz GLS provided spacious seating across three rows, with ample headroom and legroom for first- and second-row occupants. The third row was suitable for adults, a rarity among three-row SUVs. The GLS offered 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, and the power-folding third row added convenience.

The 2020 INFINITI QX80 came with an 8-inch upper and 7-inch lower infotainment touch screen, supporting Apple CarPlay, Android Auto, and navigation. A 13-speaker Bose stereo was standard, with an optional 17-speaker system. The infotainment system was functional but not particularly modern, and additional features included a rear-seat entertainment system and WiFi hotspot.

The 2021 Mercedes-Benz GLS featured the MBUX infotainment system with a massive touch screen and voice-control capabilities. It supported Apple CarPlay and Android Auto, though required a USB-C connection. The digital dash extended to the instrument panel, controlled by touch-sensitive pads on the steering wheel. The system offered a learning curve but provided a comprehensive tech experience once mastered.

The 2020 INFINITI QX80 included standard safety features like automatic emergency braking, rear cross-traffic alert, and a surround-view camera system. Optional features included blind-spot monitoring and adaptive cruise control. The QX80 received "good" scores in some IIHS crash tests and had a moderate rollover risk according to NHTSA.

The 2021 Mercedes-Benz GLS came with standard safety features such as Active Brake Assist, blind-spot monitoring, and a surround-view camera system. Available features included lane-keep assist and adaptive cruise control. The GLS also offered crosswind assist and a full array of airbags and safety systems.