Compare the2021 Cadillac XT5VS 2020 Porsche Cayenne Coupe

The XT5 Premium Luxury/Sport’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Cayenne Coupe doesn’t offer pre-crash pretensioners.

For enhanced safety, the front shoulder belts of the Cadillac XT5 are height-adjustable, and the rear seat shoulder belts have child comfort guides to move the belt to properly fit children. A better fit can prevent injuries and the increased comfort also encourages children to buckle up. The Porsche Cayenne Coupe has only front height-adjustable seat belts.

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 XT5 are reminded to check the back seat if they opened the rear door before starting out. The Cayenne Coupe doesn’t offer a back seat reminder.

Over 200 people are killed each year when backed over by motor vehicles. The XT5 Premium Luxury/Sport offers optional Reverse Automatic Braking that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The Cayenne Coupe doesn’t offer backup collision prevention brakes.

Both the XT5 and the Cayenne Coupe have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available all wheel drive, night vision systems, blind spot warning systems, around view monitors and rear cross-path warning.

For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the XT5 the rating of “Top Pick” for 2017, a rating granted to only 187 vehicles tested by the IIHS. The Cayenne Coupe has not been tested, yet.

Cadillac’s powertrain warranty covers the XT5 2 years and 20,000 miles longer than Porsche covers the Cayenne Coupe. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the Cayenne Coupe ends after only 4 years or 50,000 miles.

There are almost 5 times as many Cadillac dealers as there are Porsche dealers, which makes it much easier should you ever need service under the XT5’s warranty.

J.D. Power and Associates’ 2020 Initial Quality Study of new car owners surveyed provide the statistics that show that Cadillac vehicles are better in initial quality than Porsche vehicles. J.D. Power ranks Cadillac 14th in initial quality, above the industry average. With 24 more problems per 100 vehicles, Porsche is ranked 24th, below the industry average.

On the EPA test cycle the XT5 AWD V6 gets better fuel mileage than the Cayenne Coupe with its standard turbo V6 (18 city/26 hwy vs. 19 city/23 hwy).

An engine control system that can shut down some of the engine’s cylinders helps improve the XT5’s fuel efficiency. The Cayenne Coupe doesn’t offer a system that can shut down part of the engine.

To lower fuel costs and make buying fuel easier, the Cadillac XT5 uses regular unleaded gasoline (premium recommended with the 2.0 turbo 4-cylinder engine for maximum performance). The Cayenne Coupe requires premium, which can cost 20 to 55 cents more per gallon.

The XT5 has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The Cayenne Coupe doesn’t offer a cap-less fueling system.

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Cadillac XT5 higher (6 out of 10) than the Porsche Cayenne Coupe (3 to 5). This means the XT5 produces up to 23.4 pounds less smog-producing pollutants than the Cayenne Coupe every 15,000 miles.

A nine-speed automatic is standard on the Cadillac XT5, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Cayenne Coupe.

In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The XT5 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 Coupe doesn’t offer a brake assist feature.

The Cadillac XT5’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The Porsche Cayenne Coupe only has 5 wheel lugs per wheel.

For better maneuverability, the XT5’s turning circle is 1.1 feet tighter than the Cayenne Coupe’s (38.7 feet vs. 39.8 feet). The XT5 w/20” wheels’ turning circle is .8 feet tighter than the Cayenne Coupe’s (39 feet vs. 39.8 feet).

The Cadillac XT5 may be more efficient, handle and accelerate better because it weighs about 750 to 1350 pounds less than the Porsche Cayenne Coupe.

The XT5 is 4.6 inches shorter than the Cayenne Coupe, making the XT5 easier to handle, maneuver and park in tight spaces.

The front grille of the XT5 2.0 Turbo uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Cayenne Coupe doesn’t offer active grille shutters.

The XT5 has a much larger cargo volume with its rear seat up than the Cayenne Coupe with its rear seat up (30.2 vs. 22 cubic feet). The XT5 has a much larger cargo volume with its rear seat folded than the Cayenne Coupe with its rear seat folded (63 vs. 54.3 cubic feet).

Pressing a switch automatically lowers the XT5’s rear seats, to make changing between passengers and cargo easier. The Cayenne Coupe doesn’t offer automatic folding seats.

The XT5 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.

On a hot day the XT5’s driver can lower all 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 XT5 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 XT5 has standard extendable sun visors. The Cayenne Coupe doesn’t offer extendable visors.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Cadillac XT5 Premium Luxury/Sport has a standard wireless phone charging system (Qi) in the center console. The Cayenne Coupe doesn’t offer wireless personal charging.

The XT5’s optional Automatic Park Assist can parallel park or back into a parking spot by itself, starting and stopping automatically, with the driver only responsible for switching from reverse to drive. The Cayenne Coupe doesn’t offer an automated parking system.

The XT5 is available in both front-wheel drive and four-wheel drive configurations. The Cayenne Coupe doesn’t offer a two-wheel drive configuration.

Insurance will cost less for the XT5 owner. The Complete Car Cost Guide estimates that insurance for the XT5 will cost $6390 to $12300 less than the Cayenne Coupe over a five-year period.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Cadillac XT5 will be $28049 to $90483 less than for the Porsche Cayenne Coupe.

The Cadillac XT5 outsold the Porsche Cayenne by over two to one during the 2020 model year.