The 2012 Buick Regal GS, drugs which arrives at dealerships this fall, there has been SAE-certified to deliver 270 horsepower (201kW) and 295 lb.-ft. of torque (400Nm) for an estimated 0-60 mph performance of 6.7 seconds.
“The Regal GS 2.0L turbo delivers the highest specific output of any production engine GM has ever offered, and at 135 hp per liter is the most power dense engine ever certified by SAE,” said Mike Anderson, Ecotec global chief engineer and program manager. “We’ve been combining direct injection and variable valve timing with boosted engines since 2006, and there’s no question the Regal GS turbo has the responsiveness and acceleration of some V-6s, while delivering the fuel economy you’d expect of a four-cylinder.”
Ecotec 2.0L turbo highlights include direct injection, continuously variable valve timing, forged steel crankshaft, twin scroll design turbocharger and an efficient intercooler system. The peak torque of 295 lb-ft is achieved at a relatively low 2400 rpm. There is 95 percent of peak torque available between 2300 and 4900 rpm.
The GS’s engine is mated to a standard six-speed manual transmission, and gets an estimated fuel economy of 28 mpg on the highway. A six-speed automatic transmission will be available later. The entire GS powertrain is covered by a five-year, 100,000-mile warranty.