Compare the2025 Audi Q8 e-tron SportbackVS 2025 Porsche Cayenne

Earlier warning of stopped traffic, traffic signals, dangerous road conditions, weather, or accidents, can keep driver's safer and prevent crashes. The Q8 e-tron Sportback has Car-to-X Services, a system that seamlessly communicates important warnings to the driver about impending danger, if they're available. The Cayenne doesn’t offer a system that can receive automated systems from infrastructure.

Both the Q8 e-tron Sportback and the Cayenne have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, 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 and available around view monitors.

The Audi Q8 e-tron Sportback achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The Cayenne has not yet been evaluated by the IIHS for 2024.

There are over 54 percent more Audi dealers than there are Porsche dealers, which makes it much easier should you ever need service under the Q8 e-tron Sportback’s warranty.

The Q8 e-tron Sportback has more powerful engines than the Cayenne:

On the EPA test cycle the Q8 e-tron Sportback gets better mileage than the Cayenne running its gasoline engine:

The Q8 e-tron Sportback can travel with zero emissions for 208 to 272 miles (dependent on model). The Cayenne can’t move without running its internal combustion engine.

For better stopping power the Q8 e-tron Sportback’s standard brake rotors are larger than those on the Cayenne:

The Q8 e-tron Sportback stops shorter than the Cayenne:

The front and rear suspension of the Q8 e-tron Sportback 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 Q8 e-tron Sportback’s wheelbase is 1.1 inches longer than on the Cayenne (115.1 inches vs. 114 inches).

The Q8 e-tron Sportback handles at .92 G’s, while the Cayenne S pulls only .90 G’s of cornering force in a Motor Trend skidpad test.

The design of the Audi Q8 e-tron Sportback amounts to more than styling. The Q8 e-tron Sportback offers aerodynamic coefficients of drag from .27 to .29 Cd (depending on bodystyle and options). That is lower than the Cayenne (.3 to .35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the Q8 e-tron Sportback get better fuel mileage.

Pulling a handle automatically lowers the Q8 e-tron Sportback’s rear seats, to make changing between passengers and cargo easier. The Cayenne doesn’t offer automatic folding seats.

The Q8 e-tron Sportback 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 Q8 e-tron Sportback 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.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Q8 e-tron Sportback has standard extendable sun visors. The Cayenne doesn’t offer extendable visors.