Compare the2024 Lexus RXVS 2024 Porsche Cayenne Coupe

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 RX 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.

The RX’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 Coupe doesn’t offer a driver alert monitor.

Both the RX and the Cayenne Coupe 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, 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, available all wheel drive and around view monitors.

The Lexus RX 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 Coupe has not yet been evaluated by the IIHS for 2024.

Lexus’ powertrain warranty covers the RX 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 over 23 percent more Lexus dealers than there are Porsche dealers, which makes it easier should you ever need service under the RX’s warranty.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Lexus vehicles are more reliable than Porsche vehicles. J.D. Power ranks Lexus above average in long-term dependability. With 33 more problems per 100 vehicles in the first three years of ownership, Porsche is rated lower.

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Lexus vehicles are more reliable than Porsche vehicles. Consumer Reports ranks Lexus first in overall reliability. Porsche is ranked 8th.

On the EPA test cycle the RX running its gasoline engine gets better mileage than the Cayenne Coupe running its gasoline engine:

The RX 450h+ can travel with zero emissions for 37 miles. The Cayenne Coupe can’t move without running its internal combustion engine.

The RX offers an available continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The Cayenne Coupe doesn’t offer a CVT.

In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The RX has standard Brake Assist 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.

For better maneuverability, the RX 500h F Sport Performance’s turning circle is 2.6 feet tighter than the Cayenne Turbo E-Hybrid Coupe’s (35.4 feet vs. 38 feet).

The Lexus RX may be more efficient, handle and accelerate better because it weighs about 600 to 900 pounds less than the Porsche Cayenne Coupe.

As tested by Car and Driver, the interior of the RX 450h+ is quieter than the Cayenne S Coupe:

The RX has 1.3 inches more front headroom and .3 inches more rear headroom than the Cayenne Coupe.

The RX has a much larger cargo volume than the Cayenne Coupe with its rear seat up (29.6 vs. 20.9 cubic feet).

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

J.D. Power and Associates surveys of service recipients show that Lexus service is better than Porsche. J.D. Power ranks Lexus first in service department satisfaction. With a 18% lower rating, Porsche is ranked third.

The RX 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.

The RX’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 Coupe’s cruise control switches are unlit, making them difficult to find at night and operate safely.

To improve rear visibility by keeping the rear window clear, the RX 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 RX has standard extendable sun visors. The Cayenne Coupe doesn’t offer extendable visors.

The RX Premium/Luxury/F Sport has standard front air conditioned seats and the RX offers them optionally in the rear. This keeps the passengers comfortable and takes the sting out of hot seats in summer. The Cayenne Coupe doesn’t offer air-conditioned seats in the rear.

The RX Hybrid offers an optional 115-volt a/c outlet in the cargo area, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The Cayenne Coupe doesn’t offer a house-current electrical outlet.

The RX 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 RX owner. The Complete Car Cost Guide estimates that insurance for the RX will cost $4150 to $13780 less than the Cayenne Coupe over a five-year period.

The RX will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the RX will retain 58.33% to 60.37% of its original price after five years, while the Cayenne Coupe only retains 50.6% to 55.21%.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Lexus RX will be $37219 to $116089 less than for the Porsche Cayenne Coupe.

Consumer Reports® recommends both the Lexus RX and the Porsche Cayenne Coupe, based on reliability, safety and performance.

J.D. Power and Associates rated the RX first among midsize premium suvs in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The Cayenne Coupe isn’t in the top three in its category.

The Lexus RX outsold the Porsche Cayenne by almost six to one during 2023.