2021 BMW X3 vs 2021 Mercedes-Benz G-Class

The 2021 BMW X3, part of the third generation introduced in 2018, had undergone several updates by 2020, including the addition of a plug-in hybrid model and M performance variants. This generation of the X3 was a significant refinement, offering a luxury level of refinement that BMW had previously struggled to achieve in its smaller SUVs. The exterior of the X3 mirrored the larger BMW X5, providing a downsized yet sophisticated appearance. Inside, the X3 featured a cold, mechanical interior styling typical of BMW's lineup, which, while not as aesthetically pleasing as the Mercedes-Benz GLC-Class, offered a more functional dashboard.

The 2021 Mercedes-Benz G-Class, known as the Geländewagen or "G-Wagen," had a storied history dating back to its debut in 1979. The second-generation W463, introduced in 1991, marked a significant evolution, with the G-Class officially entering the U.S. market in 2002. The 2019 model year saw the first major redesign since 1979, unveiled at the 2018 North American International Auto Show. For 2021, the G-Class was available in two models: the G550 and the Mercedes-AMG G63. The G-Class was renowned for its boxy, rugged design, a classic two-box style that set it apart from other Mercedes-Benz vehicles. Inside, the G-Class boasted a tasteful design with a 12.3-inch widescreen infotainment screen and a matching virtual instrument panel, creating a customizable and immersive driving experience.

The 2021 BMW X3 offered a range of powertrains to suit different driving preferences. The sDrive30i and xDrive30i models were equipped with a turbocharged four-cylinder engine producing 248 horsepower, paired with an eight-speed automatic transmission. The sDrive30i featured rear-wheel drive, while the xDrive30i came with all-wheel drive, providing solid acceleration for city and highway driving. The xDrive30e plug-in hybrid variant delivered 288 horsepower and offered brisk acceleration, especially at low speeds, with a 17-mile electric-only range. For those seeking a more exhilarating driving experience, the M40i trim featured a 382-horsepower twin-turbo inline-six engine, delivering robust acceleration and enhanced cornering abilities. The high-performance X3 M model boasted an impressive 473 horsepower.

The 2021 Mercedes-Benz G-Class, particularly the G550 model, was a formidable SUV with a curb weight of 5,551 pounds. Despite its size, the G550 was surprisingly quick and nimble, thanks to its twin-turbocharged 4.0-liter V8 engine producing 416 horsepower and 450 pound-feet of torque. The G550 utilized a nine-speed automatic transmission with steering-wheel-mounted paddle shifters and permanent four-wheel drive. Dynamic Select driving programs, including "G-mode" for off-roading, allowed for precise control of throttle, transmission, and steering. The G550 could accelerate from 0 to 60 mph in just 5.6 seconds, an impressive feat for an SUV of its size. The G-Class also featured a sophisticated suspension system, with double-wishbone independent front suspension and a rigid rear axle, providing a comfortable ride on various terrains. The Mercedes-AMG G63 took performance to the next level, with its twin-turbo V8 engine tuned to 577 horsepower and 627 lb-ft of torque, achieving a 0 to 60 mph time of 4.5 seconds.

The 2021 BMW X3 excelled in providing ample interior space for passengers and cargo. With the rear seats folded, it offered up to 62.7 cubic feet of cargo space, making it one of the best in the small luxury SUV segment. Even with the rear seats in use, it provided a generous 28.7 cubic feet of cargo space. The X3 came standard with a power liftgate, and buyers could opt for a hands-free power liftgate for added convenience. The interior was spacious, with plenty of headroom and legroom for front-row passengers, and the rear seats were comfortable for adults on longer trips. The X3's dashboard featured real buttons and dials, complementing the main touchscreen and making it user-friendly for drivers and passengers alike.

The 2021 Mercedes-Benz G-Class, particularly the G550 model, offered impressive utility alongside its luxury features. With the second row folded flat, it provided up to 68.6 cubic feet of cargo space, while the cargo capacity behind the third row was 38.1 cubic feet. The G550 had a payload capacity of just over 1,000 pounds and could tow up to 7,700 pounds, thanks to its body-on-frame construction. The front cabin was spacious, with comfortable seats and ample storage options. The tall roofline provided excellent headroom in both the front and second rows, creating an airy and spacious feel. The second row could accommodate three adults comfortably, with ample legroom and a reclining seatback. However, some luxury features, such as ventilated front seats, were only available as part of expensive packages, and the G550 lacked a hands-free access feature for the tailgate.

The 2021 BMW X3 came equipped with a 10.2-inch touchscreen running the iDrive infotainment system, known for its user-friendly interface. The system offered both touch operation and an iDrive dial in the center console, catering to different user preferences. The X3 came standard with Apple CarPlay, while Android Auto was optional. Additional options included wireless device charging, a fully digital instrument panel, and a 16-speaker Harman Kardon premium stereo system. Gesture control was also available, allowing drivers to perform basic controls with hand movements, although it could result in false positives for those who gestured frequently.

The 2021 Mercedes-Benz G-Class featured impressive tech, with twin 12.3-inch HD screens handling instrument panel and infotainment duties. These screens were customizable for layout, content, and color, allowing drivers to coordinate them with the ambient lighting for a personalized experience. The G550's Burmester Surround Sound system added to the immersive environment. The infotainment system ran the latest version of Mercedes-Benz's COMAND system, with unique Touch Control buttons on the steering wheel for intuitive control. The G550 also offered a rear-seat entertainment system, three USB ports, and two 12-volt outlets. WiFi was standard with a one-month trial, but wireless device charging was not available. Bluetooth, Apple CarPlay, and Android Auto were standard, along with Mercedes me connect services for three years.

The 2021 BMW X3 came standard with advanced driver-assistance features, including automatic emergency braking, forward collision warning, pedestrian detection, and lane departure warning. It also included blind-spot monitoring, rear cross-traffic alert, and front-and-rear parking sensors. Optional safety features included adaptive cruise control, automatic high beams, headlights that bend with the road, and a head-up display.

The 2021 Mercedes-Benz G-Class prioritized safety with its rugged body-on-frame construction and mass, providing advantages in certain crash scenarios. Standard safety features included a rearview camera, Pre-Safe, traffic-sign assist, attention assist, active lane-keeping assist, active brake assist, active distance assist distronic (adaptive cruise control), active parking assist, and blind-spot monitoring. However, the active lane-keeping assist system could be abrupt and required careful understanding. The G-Class had not been rated for crash-worthiness by the IIHS or NHTSA.