Compare the2026 BMW iXVS 2025 Porsche Cayenne

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the iX are reminded to check the back seat if they opened the rear door before starting out. The Cayenne doesn’t offer a back seat reminder.

The BMW iX’s optional Surround View offers available integrated front and rear camera washers, ensuring clear, all-weather visibility without the need for manual cleaning. In contrast, the Porsche Cayenne lacks camera washers, requiring you to manually clean the cameras for optimal performance.

Both the iX and the Cayenne have standard driver and passenger frontal airbags, front and rear 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, post-collision automatic braking systems, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors and available around view monitors.

BMW pays for scheduled maintenance on the iX for 2 years and 26000 miles longer than Porsche pays for maintenance for the Cayenne (3/36,000 vs. 1/10,000).

There are over 73 percent more BMW dealers than there are Porsche dealers, which makes it much easier should you ever need service under the iX’s warranty.

The iX has more powerful engines than the Cayenne:

On the EPA test cycle the iX gets better mileage than the Cayenne running on electricity:

On the EPA test cycle the iX gets better mileage than the Cayenne running its gasoline engine:

The iX can travel longer on a full charge than the Cayenne on electricity, only, on a full charge:

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the BMW iX higher (10 out of 10) than the Porsche Cayenne (4). This means the iX produces up to 25 pounds less smog-producing pollutants than the Cayenne every 15,000 miles.

The iX’s optional tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the Cayenne’s optional 40 series front tires.

For better ride, handling and brake cooling the iX offers optional 23-inch wheels. The Cayenne’s largest wheels are only 22-inches.

For a smoother ride and more stable handling, the iX’s wheelbase is 4.1 inches longer than on the Cayenne (118.1 inches vs. 114 inches).

For greater off-road capability the iX has a greater minimum ground clearance than the Cayenne E-Hybrid (8.8 vs. 8.2 inches), allowing the iX to travel over rougher terrain without being stopped or damaged.

The design of the BMW iX amounts to more than styling. The iX offers aerodynamic coefficients of drag from .25 to .26 Cd (depending on bodystyle and options). That is significantly lower than the Cayenne (.3 to .35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the iX get better fuel mileage.

The iX has 2.5 inches more front headroom, 2.4 inches more front shoulder room, .6 inches more rear headroom and 1.8 inches more rear shoulder room than the Cayenne.

The iX has a much larger cargo volume with its rear seat up than the Cayenne with its rear seat up (35.5 vs. 27.3 cubic feet). The iX has a much larger cargo volume with its rear seat folded than the Cayenne with its rear seat folded (77.9 vs. 60.3 cubic feet).

The iX’s cargo area is larger than the Cayenne’s in every dimension:

Pressing a switch automatically lowers the iX’s rear seats, to make changing between passengers and cargo easier. The Cayenne doesn’t offer automatic folding seats.

The iX has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Cayenne doesn’t offer a remote starting system.

If the windows are left open on the iX 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 iX’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The Cayenne’s cruise control switches are unlit, making them difficult to find at night and operate safely.

Laser headlights, optional on the iX, produce their light by firing blue lasers through phosphorus, a process that uses one-half the power of the Cayenne’s LED headlights. Laser headlights can have double the range of LEDs with a much smaller surface area.

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