Compare the2024 Audi A6 AllroadVS 2023 Porsche Cayenne

The A6 Allroad’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 A6 Allroad and Cayenne have child safety locks to prevent children from opening the rear doors. The A6 Allroad 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 A6 Allroad Prestige has standard backup collision prevention system that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The Cayenne doesn’t offer backup collision prevention brakes.

The A6 Allroad’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. A lane departure warning system costs extra on the Cayenne.

To help make backing out of a parking space safer, the A6 Allroad’s optional Rear Cross-Traffic Assist uses sensors in the rear to alert the driver to vehicles approaching from the side and Automatic Brake Activation automatically engages the brakes to help avoid a collision. The Cayenne doesn’t offer a rear cross-path warning system.

Both the A6 Allroad 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, 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, rearview cameras, available night vision systems and blind spot warning systems.

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 A6 Allroad 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.

There are over 56 percent more Audi dealers than there are Porsche dealers, which makes it much easier should you ever need service under the A6 Allroad’s warranty.

The A6 Allroad’s 3.0 turbo V6 hybrid produces 37 lbs.-ft. more torque (369 vs. 332) than the Cayenne’s standard 3.0 turbo V6.

On the EPA test cycle the A6 Allroad gets better mileage than the Cayenne running its gasoline engine:

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Audi A6 Allroad higher (5 out of 10) than the Porsche Cayenne (3 to 5). This means the A6 Allroad produces up to 16.5 pounds less smog-producing pollutants than the Cayenne every 15,000 miles.

The A6 Allroad offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The Cayenne doesn’t offer an SMG or a conventional manual transmission.

For better stopping power the A6 Allroad’s standard front 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 A6 Allroad has a standard brake assist system 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 A6 Allroad’s 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 A6 Allroad has standard 20-inch wheels. Smaller 19-inch wheels are standard on the Cayenne.

The front and rear suspension of the A6 Allroad 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 A6 Allroad’s wheelbase is 1.2 inches longer than on the Cayenne (115.2 inches vs. 114 inches).

The A6 Allroad has .2 inches more front legroom and .5 inches more rear headroom than the Cayenne.

The A6 Allroad has a much larger cargo volume with its rear seat up than the Cayenne with its rear seat up (30 vs. 27.2 cubic feet). The A6 Allroad has a much larger cargo volume with its rear seat folded than the Cayenne with its rear seat folded (63.8 vs. 60.3 cubic feet).

A low lift-over trunk design makes loading and unloading the A6 Allroad easier. The A6 Allroad’s trunk lift-over height is 25 inches, while the Cayenne’s liftover is 31 inches.

The A6 Allroad’s cargo area is larger than the Cayenne’s in almost every dimension:

Pulling a handle automatically lowers the A6 Allroad’s rear seats, to make changing between passengers and cargo easier. The Cayenne doesn’t offer automatic folding seats.

The A6 Allroad 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.

The A6 Allroad’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 A6 Allroad 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.

Heated windshield washer nozzles are standard on the A6 Allroad to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The Cayenne doesn’t offer heated windshield washer nozzles.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the A6 Allroad has standard extendable sun visors. The Cayenne doesn’t offer extendable visors.

The A6 Allroad has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the car heater warms up. A heated steering wheel costs extra on the Cayenne.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Audi A6 Allroad has a standard wireless phone charging system (Qi) in the center console. Wireless charging costs extra on the Cayenne.

Consumer Reports® recommends both the Audi A6 Allroad and the Porsche Cayenne, based on reliability, safety and performance.