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Powertrain : Buick does not want anyone comparing the Avista with its last rear-drive coupe, the 300-hp GNX of 1987. But like the GNX, the Avista is powered by a turbocharged V-6. This one’s more modern and powerful, though. Borrowed from the Cadillac CT6, the twin-turbo DOHC has cylinder deactivation and makes 400 horsepower. We were standing nearby when it was fired up to drive onto the show stand, and we can assure you that it sounds mean. The CT6’s eight-speed automatic sends the torque aft. Welcome to the Gold Car Studio channel Enjoy in 4K ULTRA HD video resolution If you like video, don't forget to subscribe /share/ like / comment ... Platform : Never mind that Buick’s lineup is composed exclusively of front- and four-wheel-drive models; the Avista sends its power to the rear axle. Company representatives tell us that, as a concept, the Avista isn’t built on a particular platform. But they must want us to know they’re lying, because they also tell us it has a wheelbase. Its front-track width is 63.0 inches; the rear, 62.9. Those stats exactly describe the Chevy Camaro SS. So it’s not hard to guess where a production Avista might dig up its bones. On the concept, 20-inch wheels hide massive carbon-ceramic discs at all four corners and are wrapped in 285/30 Pirelli P Zeros up front and 305/30s in the rear. And since the Camaro SS offers magnetorheological shocks, the Avista has them, too, though their tuning would certainly be tweaked for a Buick
