Certified Benz & Beemer Compares 2008 Jaguar XK VS 2008 Audi S5 Near Scottsdale, AZ

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2008 Jaguar XK

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VS

2008 Audi S5

Safety Comparison

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The XK has standard whiplash protection, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the whiplash protection system moves the headrests forward to prevent neck and spine injuries. The S5 doesn’t offer a whiplash protection system.

Both the XK and the S5 have standard driver and passenger frontal airbags, front side-impact airbags, head airbags, four-wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

Engine Comparison

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The XKR’s standard 4.2 supercharged V8 produces 66 more horsepower (420 vs. 354) and 88 lbs.-ft. more torque (413 vs. 325) than the S5’s 4.2 DOHC V8.

For more instantaneous acceleration and better engine flexibility in any gear, the XK’s engines produce their peak horsepower at lower RPM’s than the S5:

Horsepower

XK8 4.2 DOHC V8

6000 RPM

XKR 4.2 supercharged V8

6000 RPM

S5 4.2 DOHC V8

7000 RPM

Brakes and Stopping Comparison

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For better stopping power the XKR Portfolio’s front brake rotors are larger than those on the S5:

XKR Portfolio

S5

Front Rotors

15.75 inches

13.6 inches

Rear Rotors

13.78 inches

13 inches

Tires and Wheels Comparison

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. RMDYB-MXOUX 162.241.241.35 2019/12/30

The XK’s optional 285/30R20 rear tires provide better handling because they have a lower 30 series profile (height to width ratio), which provides a stiffer sidewall than the S5’s 35 series tires.

For better ride, handling and brake cooling the XK offers optional 20-inch wheels. The S5’s largest wheels are only 19 inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the XK can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The S5 doesn’t offer run-flat tires.

The XK 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 S5, it requires you to depend on roadside assistance and your vehicle will have to be towed.

Suspension and Handling Comparison

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The XK has a standard continuously variable suspension system. Using sensors on steering angle, speed and other driver inputs, the shocks soften to improve ride, or stiffen when appropriate to aid handling on tricky roads. The S5’s suspension doesn’t offer adjustable shock absorbers.

The XK’s front to rear weight distribution is more even (52.1% to 47.9%) than the S5’s (57.7% to 42.3%). This gives the XK more stable handling and braking.

The XKR Coupe handles at .89 G’s, while the S5 pulls only .88 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the XK’s turning circle is 4.2 feet tighter than the S5’s (33.2 feet vs. 37.4 feet).

Chassis Comparison

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As tested by Road & Track while under full throttle, the interior of the XK Coupe is quieter than the S5 (73 vs. 75 dB).

Ergonomics Comparison

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The XK’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The S5’s

To keep a safe, consistent following distance, the XK offers an optional Adaptive Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The S5 doesn’t offer an adaptive cruise control.

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