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Review (2/2)

2011 Jaguar XK Range Marks Brand Milestone with XKR175 75th Anniversary Coupe

Source: Jaguar | Published: Wed Jan 05, 2011

(continued from the previous page)

Advanced Engine

The Jaguar XKR175 75th Anniversary Coupe is driven by the same supercharged V8 as the other XKR models. It is based on a lightweight body shell architecture constructed from a combination of pressed, cast and extruded aluminum alloy components. These are riveted and bonded together using aerospace industry techniques adapted for automotive use by Jaguar. The advanced XKR construction produces a body shell with very high structural integrity that is also the lightest in its class by a significant margin. The structure's strength, rigidity and lightness provide the foundation for the Jaguar XKR's scintillating performance, as well as for its occupant safety systems.

The AJ-V8 Gen III 5.0-liter supercharged V8 engine introduced for model year 2010 and carried over for 2011 is the most advanced Jaguar has ever produced. It delivers 510 hp and 461 lb-ft of torque. A twin vortex system (TVS) supercharger and twin water-cooled intercoolers are efficiently packaged in the engine's V. The Jaguar XKR175 75th Anniversary Coupe can sprint from rest to 60 mph in just 4.6 seconds.

The all-aluminum four-cam Jaguar V8 engine combines high power with high efficiency, thanks to such technologies as spray-guided direct fuel injection and dual independent variable cam timing, plus a variable inlet manifold on the naturally aspirated version. The engine has 15,000-mile or one-year service intervals, with complimentary scheduled maintenance for the first 5 years or 50,000 miles courtesy of Jaguar Platinum Coverage.

Jaguar tuned the XKR's exhaust sound for a deep, powerful character befitting a high-performance grand-tourer. It is also equipped with an active exhaust system in which valves open at higher speeds to provide an even more powerful note. Also in the XKR, a special acoustic filter at the rear of the engine, tuned to "tenor C", feeds intake sound to the cabin under hard acceleration.

All XKR models employ an electronically controlled, fully adaptive six-speed automatic transmission with the unique cast alloy JaguarDrive Selector as well as the Jaguar Sequential Shift function operated by steering-wheel paddles. The transmission is designed to be maintenance-free with "filled-for-life" fluid.

Cat-Quick Chassis Reflexes

In all XKR models, the Adaptive Dynamics active damping system optimizes handling agility and ride comfort. The system monitors body movement 100 times per second and wheel position 500 times per second and automatically increases the damping rate as the suspension approaches the limits of its travel. Adaptive Dynamics also controls wheel hop on uneven roads by rapidly varying the damping to move any wheel out of a natural bouncing frequency, benefiting ride comfort, handling and tire grip.

From the JaguarDrive Control interface, the driver can select different modes for Adaptive Dynamics. In Dynamic Mode, Adaptive Dynamics increases body control for a sportier feel and also provides more responsive accelerator pedal reaction and quicker gearshift responses. The Dynamic Stability Control system also offers four driver-selectable modes: Normal, Winter, Trac DSC and DSC OFF. Winter Mode yields a more damped accelerator pedal response for progressive control in slippery conditions, with different shift settings that delay and soften gearshifts, also for better control on low grip surfaces.

Adaptive Dynamics operates in tandem with Active Differential Control (ADC) to optimize available traction at each rear wheel, improving acceleration on low-grip surfaces while enhancing cornering ability. The clutch-type differential is operated by an internal electric motor and ball-and-ramp mechanism and transmits torque to the wheel with the most traction. This proactive system differs fundamentally from conventional traction control, which uses the brakes reactively to counteract slip after it has occurred.

Bi-Xenon Headlamps

Standard Bi-Xenon automatic headlamps include a power wash function and dynamic leveling. Corner lights are activated by the turn signals to improve visibility while cornering, which can be further enhanced by optional Active Front Lighting. Standard equipment across the XK range also includes air sensors to optimize cabin air quality through the climate control system, keyless start, electro-chromatic fold-back exterior mirrors and front and rear Park Assist with touch-screen visual indicators.

Jaguar XKR175 75th Anniversary Coupe: Photo Gallery, Review (1/2) and Specifications

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