The North American International Auto Show is one week away and a new report is indicating Buick will use the event to introduce the Cascada and US-spec Envision.

The North American International Auto Show is one week away and a new report is indicating Buick will use the event to introduce the Cascada and US-spec Envision.

First up, the Buick Cascada will be a rebadged version of the Opel / Vauxhall Cascada. As a result, it will likely feature minor styling tweaks including a waterfall grille and Buick badging. There's no word on what will power the US-spec variant but rumors suggest the car could use either a turbocharged 1.6-liter four-cylinder engine with 197 bhp (147 kW) or a turbocharged 2.0-liter four-cylinder engine with 250 bhp (186 kW).

The Envision, on the other hand, is a mid-size crossover that slots between the Encore and Enclave. Little is known about the U.S. variant but the Chinese-spec model was unveiled last year with a turbocharged 2.0-liter four-cylinder engine that develops 256 bhp (191 kW) and 353 Nm (260 lb-ft) of torque. It is connected to a six-speed automatic transmission and an all-wheel-drive system which enables the model to accelerate from 0-100 km/h in 8.4 seconds and return 8.8 L/100 km (26.7 mpg US / 32.1 mpg UK).

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