Clothing the chassis is Cadillac's biggest departure from its celebrated history since the passing of tail fins, a 0.31-Cd slick arrangement of composite body panels. In Corvette fashion the new XLR will feature induction-heat molded fiberglass, 0.75 mm (0.003 in) thicker than Chevy's sports car. That doesn't sound like much but the nominal increase in thickness should allow for a finer paint finish. That's all the better for highlighting the new cars gorgeous design, incorporating edgy CTS styling cues that are even more fitting on this sleek roadster.
Past Allanté owners needn't worry about battling with a manual soft top as the XLR features a much more user and weather friendly retractable hardtop. It should be better made than the previously fussy convertible as it's engineered by Germany based Car Top Systems, revered for its work on the Mercedes-Benz SLK and current SL mechanical masterpieces. When folded, it will take up 60% of the XLR's 340 L (12 cu ft) trunk.
The 405-hp Eaton supercharged Northstar V8 in the XLR's inspirational concept Evoq isn't expected, initially at least, but performance enthusiasts shouldn't be concerned. While the 4.6-L alloy-block will remain unaltered, the updated version of the Northstar V8 will include continuously variable valve timing, together with modifications to the inlet and exhaust systems and the engine control module, resulting in 315-hp and 310 lb-ft of torque at 4,400 rpm. What's more, the more powerful engine will now drive the rear wheels. Don't expect the Corvette's 6-speed manual transaxle though, as the Cadillac is on an entirely different mission. The XLR's 5-speed automatic is basically a more robust version of the CTS unit, complete with its sequential-shifting manual mode and Performance Algorithm Shifting system for holding gears during sporting maneuvers. It will also offer the Corvette's Getrag limited-slip differential with a modified 2.93:1 ratio.
Inside, soft leathers will accompany improved plastics, real metal accents and genuine wood veneer - the latter being eucalyptus instead of zebrano. Bvlgari fashioned gauges are clean, simple and adorned with the noted designers branding. The center dash console appears similar to that of the U.S. navigation equipped CTS, as does the general shape of the steering wheel. Quality plus fit and finish will most definitely be above the midsize sedan though. The seats come heated, air conditioned and include twin Bose speakers ideally positioned to surround each occupant in sound.