Compare the2022 Rolls-Royce CullinanVS 2022 Porsche Cayenne

The Cullinan’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Cayenne doesn’t offer pre-crash pretensioners.

Both the Cullinan and Cayenne 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 Cayenne’s 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.

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 and automatically apply the brakes to prevent a rear collision. The Cayenne doesn’t offer backup collision prevention brakes.

The Cullinan’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. A lane departure warning system costs extra on the Cayenne.

The Cullinan has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. A system to reveal vehicles in the Cayenne’s blind spot costs extra.

To help make backing out of a parking space safer, the Cullinan has a standard rear cross-path warning system, which uses sensors in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. Rear cross-path warning costs extra on the Cayenne.

The Cullinan’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Cayenne doesn’t offer a driver alert monitor.

Both the Cullinan and the Cayenne have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, rearview cameras and available night vision systems.

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

Rolls-Royce pays for scheduled maintenance on the Cullinan for 3 years and -10,000 miles longer than Porsche pays for maintenance for the Cayenne (4/unlimited vs. 1/10,000).

The Cullinan has more powerful engines than the Cayenne:

The Cullinan has 10.6 gallons more fuel capacity than the Cayenne E-Hybrid’s standard fuel tank (30.4 vs. 19.8 gallons), for longer range between fill-ups. The Cullinan has 6.7 gallons more fuel capacity than the Cayenne’s standard fuel tank (30.4 vs. 23.7 gallons).

In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The Cullinan has a standard Brake Assistant to detect emergency braking situations (by how hard and how quickly the brake pedal is pressed) and then automatically apply maximum braking immediately in order to help prevent a collision. The Cayenne doesn’t offer a brake assist feature.

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 Cayenne’s standard 55 series front tires.

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

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 Cayenne doesn’t offer run-flat tires.

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

For a smoother ride and more stable handling, the Cullinan’s wheelbase is 15.7 inches longer than on the Cayenne (129.7 inches vs. 114 inches).

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 Cayenne doesn’t offer tailgating seats.

The Cullinan has a much larger cargo volume with its rear seat up than the Cayenne with its rear seat up (43.4 vs. 27.2 cubic feet). The Cullinan has a much larger cargo volume with its rear seat folded than the Cayenne with its rear seat folded (68.2 vs. 60.3 cubic feet).

A control in the cargo area automatically lowers or raises the Cullinan’s rear seats, to make changing between cargo and passengers easier. The Cayenne 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 Cayenne’s rear cargo window doesn’t open.

The Cullinan’s standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the Cayenne.

If the windows are left open on the Cullinan the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Cayenne can only operate the windows from inside the vehicle, with the ignition on.

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 Cayenne.

The Cullinan has standard massaging front seats. Massaging front seats cost extra on the Cayenne. 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 Cayenne.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Rolls-Royce Cullinan has a standard wireless phone charging system (Qi) in the center console. Wireless charging costs extra on the Cayenne.