2011 Buick Regal GS Study: Videos and Live Photos from Detroit - Film Shows V6 Turbo, GM Says 4-Cylinder Turbo...

Even though General Motors used the term 'show car' to describe the sporty Buick Regal GS that made its world debut in Detroit, there's nothing conceptual about this model. The GS version of the new 2011 Regal sedan that's due to go on sale this summer is said to be identical to the Opel Insignia OPC in all but one element: the engine.

According to GM, whereas the OPC gets a 2.8-liter twin-scroll turbocharged with 325HP, the all-wheel drive GS is fitted with a tuned up version of the Regal CXL's 2.0-liter turbo four that makes 255HP.

However, if you pay attention to the second promotional video after the jump (pause at 52 seconds into the film), you'll see that the GS features a V6 Turbo...

We don't know if anyone popped up the hood on the Regal GS showcar in Detroit to see if it's fitted with a four-pot or a V6 Turbo, but the best explanation we can give is that GM's team took the OPC, added Buick's logos and waterfall grille along with a pair of bonnet air-vents leaving the Opel's hardware intact.

It remains to be seen whether or not GM will offer a production version of the Regal GS in the States, and if so, if it will be powered by a four-cylinder or a V6 turbo engine. Till then, watch the two videos after the break or click here to read more details about Buick's sporty saloon proposal.

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New Buick Regal GS: GM Rebadges Opel Insignia OPC But Replaces 325HP V6 Biturbo with 255HP 2.0-liter Four-Pot

Leave it to GM to take out all the fun even when it comes to re-badging its own vehicles... See, while the General took the decision to reveal a North American version of the Opel Insignia OPC in the form of the Buick Regal GS showcar in Detroit, unfortunately, the European model's 325HP 2.8-liter twin-scroll turbo V6 has been replaced with a lighter but more puny 2.0-liter turbocharged four-cylinder producing an estimated 255HP.

Officially, the Detroit automaker says that the Regal GS was designed "to explore the appeal of a high-performance variant of the Regal", but chances are that it will make it into production in the very near future.

"We designed the Regal GS to explore the appeal of a high-performance variant of the Regal," said Craig Bierley, product marketing director for Buick. "Like the Regal, the Regal GS is based on the award-winning Opel Insignia, and we believe it will reinvigorate Buick's storied Gran Sport legacy."

The Regal GS showcar uses a modified version of the 220HP 2.0-liter turbocharged four-pot that will be offered on Regal CXL models later this summer tuned to deliver greater boost pressure. The engine's output is estimated at 255 horsepower (190 kW) and 295 lb.-ft. of torque (400 Nm).

Furthermore, whereas the Regal CXL comes with a six-speed automatic transmission, the Regal GS's engine is linked to a six-speed manual gearbox that directs torque to an adaptive all-wheel-drive system.

As with its German counterpart, the GS is equipped with an electronic, limited-slip rear differential to reduce wheelspin.

General Motors says that the 255HP Buick Regal GS is expected to accelerate from 0 to 60 mph in less than 6 seconds, which sounds a bit optimistic considering the fact that the 325HP Opel Insignia OPC reaches 60mph in 5.8 seconds.

The Regal GS also benefits from a tuned four-wheel-independent suspension, a revised steering wheel system and a high-performance Brembo brake system with 14 x 1.2-inch (355 x 32 mm) cross-drilled rotors; four-piston, high-strength aluminum calipers, and high-performance pads.

There's also Opel's Interactive Drive Control System (IDCS) chassis technology that allows the driver to chose from three different operating modes (normal, sport and GS) for the suspension settings, throttle response and steering sensitivity.

Other than that, the Buick Regal GS gets the same tasty bodykit, sexy 20-inch alloy wheels and interior upgrades including a pair of Recaro front seats and flat-bottom steering wheel as its European counterpart.

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VIDEO: Opel Insignia 4x4 takes on the Ascona 400 Rally Car

Those of you that have followed the WRC the past few decades will surely remember the Opel Ascona 400, the last rear-wheel drive rally car to win the driver's World Championship in 1982 with Walter Röhrl before the iconic Audi Coupe Quattro paved the way for all-wheel drive models.

Fast-forward almost thirty years, and the (road-going) Ascona's spiritual successor, the Insignia (2010 Buick Regal in the States), is now offered with an Adaptive 4x4 system as an option on the 220HP 2.0-liter and standard on the 2.8 V6 Turbo and OPC models.

In this promo video, the 2.4-liter Ascona 400 Rally Car is pitched against the Insignia 4x4 in a race on ice. Behind the steering wheel of the Ascona 400 is rally legend Christian Geistdörfer while the modern-day Insignia is driven by racing talent Sina Winkelhock, daughter of Jockel Winkelhock.

No prize for guessing which car wins...

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New Buick Regal Sedan to be Built in Canada from 2011, Until Then it Will be 'Made in Germany'

General Motors confirmed today that it will assemble the North American-spec 2011 Buick Regal at its Oshawa Car Assembly plant in Canada with production set to commence in the first quarter 2011. The all-new Buick Regal is scheduled to go on sale in the States next Spring, with first year models to be built alongside its Opel Insignia twin at GM's Opel plant in Russelsheim, Germany.

"The new Regal gives Buick a modern performance sedan and its production here in Oshawa is terrific news for our employees, the CAW, dealers and suppliers," said Arturo Elias, president, General Motors of Canada.

"Combining Buick's top position in the industry in terms of brand quality with the Oshawa Car Plant's long-standing reputation for top quality assembly means customers' highest expectations will be met with this midsize sport sedan."

The new Buick Regal mid-size sedan joins the Chevy Camaro and Equinox, and the GMC Terrain as the fourth new vehicle in the production commitment that was part of the agreement with the Canadian and Ontario Governments. GM said that a fifth vehicle to be added in the near future.

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