Compare the2023 BMW X3 MVS 2023 Porsche Cayenne

The X3 M’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.

The X3 M has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. The Cayenne doesn’t offer a whiplash protection system.

The X3 M’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 X3 M 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 and moves the vehicle back into its lane. A system to reveal vehicles in the Cayenne’s blind spot costs extra.

To help make backing out of a parking space safer, the X3 M’s standard Cross Traffic Warning uses sensors in the rear to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The Cayenne doesn’t offer a rear cross-path warning system.

The X3 M’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 X3 M 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 around view monitors.

For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard vehicle-to-vehicle front crash prevention system, its standard vehicle-to-pedestrian front crash prevention system, and its standard headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the X3 M its highest rating: “Top Safety Pick Plus” for 2022, a rating granted to only 128 vehicles tested by the IIHS. The Cayenne has not been tested, yet.

BMW pays for scheduled maintenance on the X3 M 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 80 percent more BMW dealers than there are Porsche dealers, which makes it much easier should you ever need service under the X3 M’s warranty.

J.D. Power and Associates’ 2022 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Porsche vehicles. J.D. Power ranks BMW above average in initial quality. With 35 more problems per 100 vehicles, Porsche is rated below average.

The X3 M has more powerful engines than the Cayenne:

As tested in Motor Trend the X3 M Competition is faster than the Cayenne E-Hybrid 3.0 turbo V6 hybrid:

On the EPA test cycle the X3 M gets better mileage than the Cayenne running its gasoline engine:

For better stopping power the X3 M’s standard brake rotors are larger than those on the Cayenne:

In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The X3 M 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 X3 M stops shorter than the Cayenne:

The X3 M’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the Cayenne’s standard 55 series front and 50 series rear tires.

For better ride, handling and brake cooling the X3 M has standard 20-inch wheels. Smaller 19-inch wheels are standard on the Cayenne.

The X3 M’s front to rear weight distribution is more even (50.1% to 49.9%) than the Cayenne’s (53.6% to 46.4%). This gives the X3 M more stable handling and braking.

The X3 M Competition handles at .95 G’s, while the Cayenne E-Hybrid pulls only .87 G’s of cornering force in a Motor Trend skidpad test.

The X3 M Competition executes Motor Trend’s “Figure Eight” maneuver 1.2 seconds quicker than the Cayenne E-Hybrid (24.2 seconds @ .86 average G’s vs. 25.4 seconds @ .78 average G’s).

The X3 M is 7.7 inches shorter than the Cayenne, making the X3 M easier to handle, maneuver and park in tight spaces.

The X3 M has a much larger cargo volume with its rear seat up than the Cayenne with its rear seat up (28.7 vs. 27.2 cubic feet). The X3 M has a much larger cargo volume with its rear seat folded than the Cayenne with its rear seat folded (62.7 vs. 60.3 cubic feet).

A low lift-over cargo hatch design makes loading and unloading the X3 M easier. The X3 M’s cargo hatch lift-over height is 28.5 inches, while the Cayenne’s liftover is 31 inches.

Pulling a handle automatically lowers the X3 M’s rear seats, to make changing between passengers and cargo easier. The Cayenne doesn’t offer automatic folding seats.

The X3 M offers a 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 X3 M 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 or with the driver’s door power window switch. The driver of the Cayenne can only operate the windows from inside the vehicle, with the ignition on.

The X3 M’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.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the X3 M has standard extendable sun visors. The Cayenne doesn’t offer extendable visors.

Insurance will cost less for the X3 M owner. The Complete Car Cost Guide estimates that insurance for the X3 M will cost $1180 to $10100 less than the Cayenne over a five-year period.

The BMW X3 outsold the Porsche Cayenne by almost five to one during 2022.