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For enhanced safety, the front shoulder belts of the Lexus GS F 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 Panamera has only front height-adjustable seat belts.
To help make backing safer, the GS F’s cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The Panamera doesn’t offer a cross-path warning system.
Both the GS F and the Panamera have standard driver and passenger frontal airbags, front and rear 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, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.
Lexus’ powertrain warranty covers the GS F 2 years and 20,000 miles longer than Porsche covers the Panamera. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the Panamera ends after only 4 years or 50,000 miles.
There are over 26 percent more Lexus dealers than there are Porsche dealers, which makes it easier should you ever need service under the GS F’s warranty.
J.D. Power and Associates’ 2018 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 first in reliability, above the industry average. With 1 more problems per 100 vehicles, Porsche is ranked second.
From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Lexus vehicles are more reliable than Porsche vehicles. Consumer Reports ranks Lexus first in reliability. Porsche is ranked 11th.
The GS F’s 5.0 DOHC V8 produces 137 more horsepower (467 vs. 330) and 58 lbs.-ft. more torque (389 vs. 331) than the Panamera’s standard 3.0 turbo V6. The GS F’s 5.0 DOHC V8 produces 27 more horsepower (467 vs. 440) than the Panamera 4S’ standard 2.9 turbo V6. The GS F’s 5.0 DOHC V8 produces 14 more horsepower (467 vs. 453) than the Panamera GTS’ standard 4.0 turbo V8.
In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Lexus GS F higher (5 out of 10) than the Porsche Panamera (3 to 5). This means the GS F produces up to 16.5 pounds less smog-producing pollutants than the Panamera every 15,000 miles.
For better stopping power the GS F’s standard brake rotors are larger than those on the Panamera:
In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The GS F 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 Panamera doesn’t offer a brake assist feature.
The GS F’s tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the Panamera’s standard 45 series front and 40 series rear tires.
The GS F has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the Panamera; it requires you to depend on roadside assistance and your vehicle will have to be towed.
For better maneuverability, the GS F’s turning circle is 2.2 feet tighter than the Panamera’s (36.8 feet vs. 39 feet). The GS F’s turning circle is 3.9 feet tighter than the Panamera Executive’s (36.8 feet vs. 40.7 feet).
The GS F is 5.3 inches shorter than the Panamera, making the GS F easier to handle, maneuver and park in tight spaces.
The GS F has standard seating for 5 passengers; the Panamera can only carry 4.
A low lift-over trunk design makes loading and unloading the GS F easier. The GS F’s trunk lift-over height is 27.4 inches, while the Panamera’s liftover is 29.7 inches.
With its sedan body style, valet key, locking rear seatbacks and remote trunk release lockout, the GS F offers cargo security. The Panamera’s hatchback body style and non-lockable remote release defeat cargo security.
The GS F 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 Panamera doesn’t offer a remote starting system.
The GS F’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. An easy entry system costs extra on the Panamera.
The GS F offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Panamera doesn’t offer a heads-up display.
If the windows are left open on the GS F the driver can close them all at the outside door handle. On a hot day the driver can lower the windows at the outside door handle or from a distance using the keyless remote. (This window function must be activated by your Lexus service department.) The driver of the Panamera 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 GS F has standard extendable sun visors. The Panamera doesn’t offer extendable visors.
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