Compare the2023 Rolls-Royce CullinanVS 2023 Mercedes G-Class

Both the Cullinan and G-Class have child safety locks to prevent children from opening the rear doors. The Cullinan has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The G-Class’ child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

The Cullinan’s standard pretensioning seatbelts also sense rear collisions and remove slack from the seatbelts to help protect the occupants from whiplash and other injuries. The G-Class doesn’t offer a whiplash protection system.

The Cullinan has standard PostCrash, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The G-Class doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

Over 200 people are killed each year when backed over by motor vehicles. The Cullinan has standard Active Park Distance Control that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The G-Class doesn’t offer automatic braking for stationary objects directly to the rear.

A passive infrared night vision system optional on the Cullinan helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The G-Class doesn’t offer a night vision system.

The Cullinan has a standard Surround View to allow the driver to see objects all around the vehicle on a screen. The G-Class only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

For better protection of the passenger compartment, the Cullinan uses safety cell construction with a three-dimensional high-strength frame that surrounds the passenger compartment. It provides extra impact protection and a sturdy mounting location for door hardware and side impact beams. The G-Class uses a body-on-frame design, which has no frame members above the floor of the vehicle.

Both the Cullinan and the G-Class have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and driver alert monitors.

The Rolls-Royce Cullinan weighs 459 to 760 pounds more than the Mercedes G-Class. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

The Cullinan comes with a full 4-year/unlimited-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The G-Class’ 4-year/50,000-mile basic warranty expires sooner.

Rolls-Royce pays for scheduled maintenance on the Cullinan for 4 years and unlimited miles. Rolls-Royce will pay for oil changes, lubrication and any other required maintenance. Mercedes doesn’t pay scheduled maintenance for the G-Class.

The Cullinan’s standard 6.8 turbo V12 produces 147 more horsepower (563 vs. 416) and 177 lbs.-ft. more torque (627 vs. 450) than the G 550’s standard 4.0 turbo V8. The Cullinan Black Badge’s standard 6.8 turbo V12 produces 15 more horsepower (592 vs. 577) and 37 lbs.-ft. more torque (664 vs. 627) than the AMG G 63’s standard 4.0 turbo V8.

On the EPA test cycle the Cullinan gets better mileage than the G-Class:

For better stopping power the Cullinan’s front brake rotors are larger than those on the G-Class:

The Cullinan’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the G 550’s standard 55 series tires.

For better ride, handling and brake cooling the Cullinan has standard 21-inch wheels. Smaller 19-inch wheels are standard on the G 550.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the Cullinan can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The G-Class doesn’t offer run-flat tires.

For superior ride and handling, the Rolls-Royce Cullinan has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Mercedes G-Class has a solid rear axle, with a non-independent rear suspension.

The Cullinan has active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The G-Class doesn’t offer an active sway bar system.

The front and rear suspension of the Cullinan uses air springs for a smoother, controlled ride than the G-Class, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The Cullinan offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Mercedes doesn’t offer an active suspension on the G-Class.

The Cullinan has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The Cullinan’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The G-Class doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the Cullinan’s wheelbase is 15.9 inches longer than on the G-Class (129.7 inches vs. 113.8 inches).

For better maneuverability, the Cullinan’s turning circle is 1.3 feet tighter than the G-Class’ (43.3 feet vs. 44.6 feet).

Unibody construction lowers the Cullinan’s center of gravity significantly without reducing ground clearance. This contributes to better on the road handling and better off-road performance and stability. In addition, unibody construction makes the chassis stiffer, improving handling and reducing squeaks and rattles. The G-Class uses body-on-frame design instead.

The Cullinan has 5 cubic feet more passenger volume than the G-Class (112 vs. 107).

The Cullinan has .9 inches more front legroom and 3.4 inches more rear legroom than the G-Class.

Flexibility is maximized at the game, campground or a drive-in theatre in the Cullinan when its optional tailgating rear seats are deployed, allowing people to sit facing out of the tailgate. (Do not use while vehicle is in motion.) The G-Class doesn’t offer tailgating seats.

Pressing a switch automatically lowers or raises the Cullinan’s rear seats, to make changing between cargo and passengers easier. The G-Class doesn’t offer automatic folding seats.

The Cullinan’s rear cargo window opens separately from the rest of the tailgate door to allow quicker loading of small packages. The G-Class’ rear cargo window doesn’t open.

To make loading and unloading groceries and cargo easier, especially for short adults, the Cullinan has a standard power tailgate, which opens and closes automatically by pressing a button. The G-Class doesn’t offer a power cargo door.

The Cullinan has a standard heads-up display that projects speed, warning and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The G-Class doesn’t offer a heads-up display.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Cullinan has standard extendable sun visors. The G-Class doesn’t offer extendable visors.

Manual rear side window sunshades are available in the Cullinan to help block heat and glare for the rear passengers. The G-Class doesn’t offer rear side window sunshades.

Optional air conditioned front and rear seats keep the Cullinan’s passengers comfortable and take the sting out of hot leather in summer. The G-Class doesn’t offer air-conditioned seats in the rear.

The Cullinan has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the vehicle heater warms up. A heated steering wheel costs extra on the G-Class.

The Cullinan has standard massaging front seats. Massaging front seats cost extra on the G-Class. The Cullinan also offers optional massaging rear seats in order to maximize comfort and eliminate fatigue on long trips. Massaging rear seats aren’t available in the G-Class.