This fall, the 2012 Buick Regal GS is slated to arrive. It has been certified by the SAE to have an output of 270hp (201kW) and 295 lb.-ft. of torque (400Nm), enabling the vehicle to sprint from zero to 60 mph in 6.7 seconds.
Installed with its exclusive Ecotec 2.0L direct-injected turbocharged four-cylinder engine, the Regal GS develops more torque than Acura TSX V-6, Lexus IS 250 Audi A4 Sport, and Volvo S60 T5.
The highlights to the Ecotec 2.0L turbo include direct injection, forged steel crankshaft, continuously variable valve timing, an efficient intercooler system, and twin scroll design turbocharger. The peak torque of 295 lb-ft can be achieved at a low 2400 rpm. It has 95% of peak torque available between 2300 and 4900 rpm.
The GS engine is partnered to a standard six-speed manual transmission. On the highway, it returns an average of 28 mpg. The carmaker will be offering a six-speed automatic transmission later.
The company offers its entire GS powertrain with a five-year, 100,000-mile warranty. Interactive Drive Control System chassis technology, which provides improved vehicle stability, further strengthens the performance of the Regal GS. The driver can choose from three operating modes that adjust the suspension settings, and steering sensitivity via the variable-effort steering system.
The Interactive Drive Control System chassis technology adds even more performance capability to the Regal GS by improving its stability. This features three selectable modes that adjust steering sensitivity with a variable-effort system, as well as the suspension settings. A “Standard” mode is the default setting for regular driving situations. The "GS" mode stiffens suspension and steering response to an optimal level for dynamic driving. The "Sport" mode falls between the aforementioned settings for a balanced performance level.
A four-wheel independent suspension including a special High Performance Strut (HiPerStrut) front suspension is another feature of the Regal GS. HiPerStrut lessens torque steer and keeps negative camber in cornering situation, which is vital for maintaining tyre contact patch. This results in more grip and cornering power, which translates to improved steering precision and feedback, and consequently better responsiveness.
The four-link independent rear suspension improves stability and grip by specifically addressing undesirable toe and camber effects when performing agile manoeuvres. Active Computer Damping Control instantaneously manages both front and rear damper characteristics for a continually optimised ride comfort level despite changes in driving surfaces and conditions. Greater degrees of damping for higher performance levels are possible when either the "Sport" or "GS" mode is selected.
The Regal GS’s braking power emanates from the large diameter four-wheel disc brake system that makes use of big, four-piston Brembo front callipers for accurate modulation and feel improvement. A Standard, four-channel anti-lock brake system is in place to ensure shorter stopping distances over different surfaces and conditions. Another standard feature is the StabiliTrak electronic stability control with integrated, full-speed traction control.
The GS is noticeably sportier in its stance, thanks to its lower ride height compared to other Regal models, as well as its standard bold 19-inch, 5-Twin Spoke alloy wheels fitted with all-season tyres. There is also an option to replace these with 20-inch, 5-Twin Spoke polished alloy wheels with performance tyres.