The 2012 Buick Regal's base engine is a 2.4-liter four-cylinder that produces 182 hp and 172 pound-feet of torque.
The optional eAssist light hybrid powertrain uses the same 2.4-liter engine in conjunction with an 11-kilowatt electric motor/generator and lithium-ion battery system. A six-speed automatic with manual shift control is the only available transmission on these models.
The Regal Turbo receives a turbocharged 2.0-liter engine that makes 220 hp and 260 lb-ft of torque. It, too, comes with a standard six-speed automatic transmission, but a six-speed manual is offered as an option.
The Regal GS uses the same turbo engine, but benefits from added turbo boost and a free-flowing exhaust to kick power output up to 270 hp and 295 lb-ft of torque. The six-speed manual transmission is standard, with the automatic available as an option (late availability).
In recent Edmunds testing, a Regal with the base 2.4-liter required 9.9 seconds to accelerate from zero to 60 mph, which is considerably slower than competing sedans. The Turbo improves that time to 8.4 seconds, but it's still off the mark for the class. In order to achieve a competitive time, you'd have to spring for the top-of-the-line GS, which turned in a quick 6.2-second run with the automatic transmission. Curiously, the manual was slower at 6.9 seconds due to the difficulty of launching it smoothly.
The optional eAssist light hybrid powertrain uses the same 2.4-liter engine in conjunction with an 11-kilowatt electric motor/generator and lithium-ion battery system. A six-speed automatic with manual shift control is the only available transmission on these models.
The Regal Turbo receives a turbocharged 2.0-liter engine that makes 220 hp and 260 lb-ft of torque. It, too, comes with a standard six-speed automatic transmission, but a six-speed manual is offered as an option.
The Regal GS uses the same turbo engine, but benefits from added turbo boost and a free-flowing exhaust to kick power output up to 270 hp and 295 lb-ft of torque. The six-speed manual transmission is standard, with the automatic available as an option (late availability).
In recent Edmunds testing, a Regal with the base 2.4-liter required 9.9 seconds to accelerate from zero to 60 mph, which is considerably slower than competing sedans. The Turbo improves that time to 8.4 seconds, but it's still off the mark for the class. In order to achieve a competitive time, you'd have to spring for the top-of-the-line GS, which turned in a quick 6.2-second run with the automatic transmission. Curiously, the manual was slower at 6.9 seconds due to the difficulty of launching it smoothly.
