2023 Mercedes-Benz GLC vs 2024 Mercedes-Benz GLS

The 2023 Mercedes-Benz GLC-Class presented a blend of the familiar and the new. While the GLC 300 was redesigned, the Coupe models carried over from the previous year, with new versions expected in the 2024 model year. The changes in the GLC 300 were subtle, with the most noticeable being the narrower taillights. Despite the redesign, the GLC maintained its classic and timeless appeal, which had led the small luxury SUV class for much of its production run. The interior saw a more significant update, aligning with newer Mercedes models, featuring a large vertical infotainment touchscreen and a tablet-like instrument panel. The materials and construction remained top-notch, offering a simpler and cleaner cockpit design compared to its rivals.

The 2024 Mercedes-Benz GLS exuded a soft sensuality in its design, which, while bordering on boring, aged well. The GLS 450 test vehicle featured stunning 22-inch AMG rims, a new silver four-louver grille, and polished metal accents, all complemented by a Twilight Blue paint color. Inside, the GLS 450 showcased a new Bahia Brown over Black interior color scheme, with natural-grain Grey Oak and polished aluminum accents. The GLS 450 was powered by a turbocharged 3.0-liter inline six-cylinder engine with mild-hybrid technology, offering a smooth and seamless driving experience. The test vehicle included several packages, bringing the MSRP to $97,730, including destination charges.

The 2023 Mercedes-Benz GLC-Class was limited to the GLC 300 trim, powered by a 2.0-liter turbocharged four-cylinder engine paired with a 48-volt mild-hybrid system, producing 255 horsepower and 295 pound-feet of torque. It featured a nine-speed automatic transmission with standard rear-wheel drive and optional 4Matic all-wheel drive. The GLC 300 accelerated smoothly, reaching 60 mph in 6.2 seconds, which was average for its class. The brake pedal was a bit soft, but effective, and the suspension favored comfort over sporty handling. The GLC 4Matic Coupe continued with its older engine, offering similar performance, while the AMG GLC 43 Coupe provided a sportier option with a 3.0-liter turbocharged V6, producing 385 hp and 384 lb-ft of torque, accelerating to 60 mph in 4.7 seconds.

The 2024 Mercedes-Benz GLS 450, with its 375 horsepower and 369 pound-feet of torque, provided smooth and swift acceleration, reaching 60 mph in 5.8 seconds. The mild-hybrid system added an instant 148 lb-ft of torque, enhancing its lively feel from a stop. A nine-speed automatic transmission and variable 4Matic all-wheel-drive system offered multiple driving modes, including Eco, Comfort, Sport, and Individual. The GLS 450 had a towing capacity of 7,700 pounds and a fuel economy rating of 21 mpg combined. The driving experience was sublime, with the adaptive air suspension providing excellent handling, though some oscillations were noted on uneven roads. The massive tires contributed to its athleticism, while the brakes performed admirably.

The 2023 Mercedes-Benz GLC offered comfortable front seats with ample adjustment options and firm cushioning. The synthetic leather upholstery was convincingly grained, with real leather available for smoother surfaces. Storage options included a large center console bin, cupholders, and well-sized door pockets. The GLC provided ample space for front passengers, while rear seats accommodated average adults, though headroom was slightly limited. Cargo space was 21.9 cubic feet, smaller than rivals, but adequate for most needs. The GLC Coupe's sloping roofline reduced cargo capacity to 17.6 cubic feet and rear headroom by 1.3 inches.

The 2024 Mercedes-Benz GLS, with the AMG Line package, featured sportier styling but side sill trim that could be inconvenient. The front seats offered comfort with leather surfaces, heating, ventilation, and massage programs. The new steering wheel was delightful, though touch-sensing controls could be irritating. The Exclusive Trim Package added heated rear seats and a four-zone climate control system. The second-row captain’s chairs provided excellent thigh support, though access to the third row was cumbersome. The third-row space was snug for adults but suitable for children. Cargo space was practical, with 17.4 cubic feet behind the third row, 42.7 cubic feet behind the second row, and 84.7 cubic feet behind the front seats.

The 2023 Mercedes-Benz GLC featured a new interior layout with an 11.9-inch touchscreen, offering sharp graphics and immediate responses. However, its lower placement made it more distracting to use. The MBUX infotainment system had excellent voice recognition but could interrupt audio. The system lacked physical buttons, making adjustments more distracting. Standard connectivity included wireless Apple CarPlay and Android Auto, with an available Burmester 3D Surround Sound system.

The 2024 Mercedes-Benz GLS was equipped with the latest MBUX infotainment system, featuring a 12.3-inch digital instrumentation panel and a 12.3-inch infotainment touchscreen. The system offered improved graphics and various themes and modes. However, touch-sensitive areas on the steering wheel and center console could cause unwanted changes, leading to confusion. Despite this, MBUX was intuitive, with outstanding voice recognition and helpful augmented reality for navigation. The Burmester surround-sound system with Dolby Atmos technology was impressive.

The 2023 Mercedes-Benz GLC had not yet been crash-tested by NHTSA or IIHS, but the previous model received top scores. Standard safety features included forward collision warning, automatic emergency braking, blind-spot monitoring, and adaptive headlights. The optional Driver Assistance package added adaptive cruise control, lane-keep assist, and more. The Coupe included cross-traffic alerts and a surround-view camera.

The 2024 Mercedes-Benz GLS came with over 20 significant safety features, adjustable through MBUX. The ADAS systems were praised for their smooth operation, with forward-collision warning, lane-departure warning, and lane-keeping assist systems performing well. The adaptive cruise control and lane-centering assist systems handled various driving conditions smoothly, with only one minor issue noted during testing.