Compare the2026 Audi Q4 e-tronVS 2025 Porsche Cayenne Coupe

Both the Q4 e-tron and the Cayenne Coupe have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, 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.

Audi pays for scheduled maintenance on the Q4 e-tron for 2 years and 20,000 miles longer than Porsche pays for maintenance for the Cayenne Coupe (3/30,000 vs. 1/10,000).

There are over 50 percent more Audi dealers than there are Porsche dealers, which makes it easier should you ever need service under the Q4 e-tron’s warranty.

On the EPA test cycle the Q4 e-tron gets better mileage than the Cayenne Coupe running on electricity:

On the EPA test cycle the Q4 e-tron gets better mileage than the Cayenne Coupe running its gasoline engine:

The Q4 e-tron can travel longer on a full charge than the Cayenne Coupe on electricity, only, on a full charge:

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Audi Q4 e-tron higher (10 out of 10) than the Porsche Cayenne Coupe (2 to 4). This means the Q4 e-tron produces up to 40.6 pounds less smog-producing pollutants than the Cayenne Coupe every 15,000 miles.

For better stopping power the Q4 e-tron’s standard brake rotors are larger than those on the Cayenne Coupe:

The Q4 e-tron’s front to rear weight distribution is more even (50% to 50%) than the Cayenne Coupe’s (56.8% to 43.2%). This gives the Q4 e-tron more stable handling and braking.

For better maneuverability, the Q4 e-tron 45’s turning circle is 4.5 feet tighter than the Cayenne Turbo GT’s (33.5 feet vs. 38 feet). The Q4 e-tron 55’s turning circle is 2 feet tighter than the Cayenne Coupe’s (37.7 feet vs. 39.7 feet).

The Q4 45 e-tron is 1 foot, 1.5 inches shorter than the Cayenne Turbo GT, making the Q4 e-tron easier to handle, maneuver and park in tight spaces.

The design of the Audi Q4 e-tron amounts to more than styling. The Q4 e-tron offers aerodynamic coefficients of drag from .3 to .31 Cd (depending on bodystyle and options). That is significantly lower than the Cayenne Coupe (.34 to .35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the Q4 e-tron get better fuel mileage.

The Q4 e-tron has .3 inches more front headroom and .1 inches more front legroom than the Cayenne Coupe.

The Q4 e-tron has a much larger cargo volume than the Cayenne Coupe with its rear seat up (24.8 vs. 20.9 cubic feet).

The Q4 e-tron 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 Coupe doesn’t offer a remote starting system.

If the windows are left open on the Q4 e-tron the driver can close all of them 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 Coupe can only operate the windows from inside the vehicle, with the ignition on.

To improve rear visibility by keeping the rear window clear, the Q4 e-tron has a standard rear wiper. The Cayenne Coupe doesn’t offer a rear wiper.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Q4 e-tron has standard extendable sun visors. The Cayenne Coupe doesn’t offer extendable visors.

The Q4 e-tron is available in both rear-wheel drive and four-wheel drive configurations. The Cayenne Coupe doesn’t offer a two-wheel drive configuration.