In November, we took a spin in the Opel Insignia OPC (which stands, not too imaginatively, for Opel Performance Content), the highest performing model in the extensive and lauded Insignia lineup. We posited that car might point the way toward the revival of a Buick performance subbrand like T-Type. Well, now we know it's likely to be called GS if the Buick Regal GS show car bowing at the 2010 Detroit show is any indication, though it's still not confirmed for production. Most of the content is lifted directly from the OPC, from the aggressive restyled fascias with vertical air inlets in front, dual exhaust outlets and a diffuser in back, as well as unique rocker panels, integrated rear spoiler, and special Olympic White paint. The jet-black interior features Recaro seats with white stitching, a flat-bottom steering wheel, and piano-black trim.
Mechanical upgrades borrowed from Opel include 20-inch forged wheels, vented and drilled Brembo brakes with 14 x 1.2-inch vented and cross-drilled front rotors, four-piston, high-strength aluminum calipers, and high-performance pads. An adjustable suspension lowers the body by 0.4 inch and features HiPerStruts in front that help reduce torque steer and maintain negative camber during cornering for improved grip, improving road feel and reducing undesirable feedback in bumpy corners. The Interactive Drive Control System (also available on Regal CXL 2.0L turbo models) delivers enhanced vehicle stability and greater driving safety, while also adapting the damping and driving characteristics to the driver's preferences. Normal, sport, and GS modes tailor the suspension settings, throttle response, shift pattern, and steering sensitivity through the variable-effort steering system.
The big difference relative to the OPC is replacement of that car's 2.8-liter turbocharged 321-horsepower, 321-pound-foot V-6 with a higher-output version of the 2.0-liter turbo that's expected to produce at least 255 horses and 295 pound-feet. That abundant force is routed through a six-speed manual to a Haldex all-wheel-drive system that includes an electronically controlled limited-slip rear differential. Why ditch the six? According to Craig Bierley, product marketing director for Buick, that engine would likely incur a gas-guzzler penalty, and in any case, the design brief was to build a car that could accelerate to 60 mph in the fives, and the 2.0T was easily able to accomplish that while achieving considerably better fuel economy than the V-6.
Bierley also assured us that the rock-hard damper tuning of the IDCS system's OPC setting (now GS) would be softened just a bit for the U.S. market. Trust us -- this is a good thing in a country that maintains its roadways so much worse than the Germans do. Only the Insignia's normal setting felt tolerable, Sport prompted minor kidney trauma, and when in OPC (the max setting) one fears that conversation might imperil one's tongue. We're also hopeful that Buick will tune the four-cylinder's exhaust to eliminate the annoying drone we recently experienced in the OPC at 2000 rpm. Grip from the Pirelli PZeros was impressive back in November, and we expect much the same from the new 245/35/ZR20 Bridgestones. The steering feedback, braking feel and performance, and general chassis poise felt equal with the German sport-sedan competitive set on the Opel Insignia, and the same should hold true for the Regal GS. It will admittedly take some work to get the driving public to consider a Buick competitive with an A4 Quattro, but the first step is delivering the goods.
Thanks to: Motor Trend