The Buick Regal GS’ European counterpart, the Opel Insignia OPC, doesn’t look much different, save for some funny badges and bolder alloy wheels. Under the hood, the OPC gets a 2.8L V6 with a twin-scroll turbocharger making 300 horsepower, as well as all-wheel drive.
FAST FACTS
1. Powered by a turbocharged 4-cylinder the Regal GS makes 270-hp and 295 lb-ft of torque. 2. Along with that extra power, GS models get some revised styling, Brembo brakes, adjustable shock absorbers, a harmon/kardon audio system and a 20-inch wheel and tire package.
3. Standard on GS models is an Interactive Drive Control System, letting drivers...