2025 Hyundai IONIQ 5 vs 2026 Mercedes-Benz GLS

The 2025 Hyundai IONIQ 5 maintained its distinctive retro-inspired design, reminiscent of the 1986-1991 Lancia Delta, particularly in its high-performance Ioniq 5 N variant. The mid-cycle refresh brought subtle changes to the lower front fascia, while retaining the iconic “Parametric Pixel” headlights and taillights, round wheel arches, and a high rear spoiler. The new XRT trim stood out with red tow hooks and black plastic bumper cladding, featuring a unique “digital camouflage” pattern. Exclusive colors like Ultimate Red and Cosmic Blue Pearl were introduced for the XRT, alongside new wheel designs that emphasized a rally style. Inside, the Ioniq 5's cabin remained minimalistic and modern, with minor revisions to the center console for enhanced functionality. The XRT trim added a rugged touch with its dark interior and all-weather floor mats.

The 2026 Mercedes-Benz GLS offered a range of models, including the GLS 450, GLS 580, AMG GLS 63, and Maybach GLS 600, with prices spanning from $91,600 to $181,350. The GLS 450 test vehicle featured the new Manufaktur Edition Package, adding 21-inch AMG wheels, the AMG Line Exterior Package, and exclusive paint colors. The interior, similar to the smaller GLE-Class, boasted high-quality materials and detailing, though body creaks were noted on chilly mornings. The GLS 450 came with standard artificial leather upholstery, with options for higher-grade leather and various interior trims. The dual 12.3-inch displays were well-integrated, and the vehicle's tailored feel made it easier to manage in urban settings compared to larger SUVs.

The 2025 Hyundai IONIQ 5 XRT was designed for light off-road adventures, featuring a Terrain Mode button with Snow, Mud, and Sand options. These modes adjusted throttle mapping, wheel slip, power distribution, and regenerative braking. The XRT handled off-road conditions well, with regenerative braking minimizing the need for traditional braking. The Ioniq 5 offered various powertrain options, with RWD models producing 168 to 225 horsepower and AWD models delivering 320 horsepower. The AWD XRT had a range of 259 miles, while other trims varied from 245 to 318 miles depending on configuration.

The 2026 Mercedes-Benz GLS 450 was powered by a turbocharged 3.0-liter inline-six engine with mild-hybrid assist, producing 375 horsepower and 369 pound-feet of torque. It accelerated from 0-60 mph in 5.8 seconds and had an EPA rating of 21 mpg combined. The GLS featured multiple driving modes, including Comfort, Eco, Sport, Off-Road, and Individual, with a standard Airmatic adaptive suspension enhancing ride quality. The GLS had a maximum towing capacity of 7,700 pounds and offered a smooth driving experience, though occasional delays in responsiveness were noted. The GLS excelled in urban and suburban environments, offering a quiet cabin and composed ride.

The 2025 Hyundai IONIQ 5 addressed previous complaints by adding a rear windshield wiper and revising the center console for improved functionality. Heated front seats were standard, with additional features like a heated steering wheel and front seat ventilation available on higher trims. Interior dimensions remained unchanged, with generous legroom and cargo space. The Ioniq 5 transitioned to the North American Charging System, allowing access to Tesla's Supercharger network, and included a CCS adapter for public and fast charging.

The 2026 Mercedes-Benz GLS offered standard seven-passenger seating, with a six-passenger configuration available. The GLS provided exceptional comfort, with features like a four-zone climate control system, heated and ventilated seats, and an executive-style rear seat package. Storage options were limited, but the cargo space was ample, with a maximum capacity of 84.7 cubic feet. The GLS excelled in carrying passengers comfortably, though some storage areas were lacking.

The 2025 Hyundai IONIQ 5 featured dual 12.3-inch screens with improved functionality and faster processing speeds. Wireless Apple CarPlay and Android Auto were standard, along with a Bose Premium Audio system on higher trims. The Ioniq 5 offered standard navigation, dynamic voice recognition, and multiple USB-C ports, with a head-up display available on the Limited trim.

The 2026 Mercedes-Benz GLS featured dual 12.3-inch displays with the MBUX infotainment system, offering wireless Apple CarPlay and Android Auto, navigation with augmented reality, and a Burmester surround-sound system. Additional options included gesture control, a head-up display, and rear infotainment screens. The MBUX system was user-friendly, though the digital assistant occasionally struggled with specific commands.

The 2025 Hyundai IONIQ 5 received top safety ratings from the IIHS and NHTSA, with new standard safety features like an enhanced driver attention system and parking-distance warnings. Highway Driving Assist 1 and 2 were available, offering adaptive cruise control and lane-keep assist functions.

The 2026 Mercedes-Benz GLS included nearly 40 safety and driver-assistance systems, such as Pre-Safe, Crosswind Assist, and Active Emergency Stop Assist. The GLS featured a hands-on driver-assistance system, though it struggled with certain road conditions. The vehicle required active driver participation, but overall provided a smooth and refined driving experience.