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Buick Avenir concept struts into Motown

We love auto show surprises, and Buick has already gifted us a sparkly package on the eve of the 2015 Detroit Auto Show. Dubbed Avenir, this four-door concept is said to signal the future of the Trishield brand by previewing a possible flagship sedan. Incorporating time-honored Buick design hallmarks like the sweep-spear profile, Ventiports, and even a subtle boattail rear-end, the four-place sedan is powered by a surprisingly real-world powertrain – namely a next-generation V6 with cylinder deactivation and stop/start, with the most interesting part of the driveline arguably being a "twin-clutch all-wheel-drive system" and a nine-speed automatic gearbox with paddle shifters. Make no mistake, this is a big car. At 204.5 inches long, it's longer than a standard-wheelbase Cadillac Escalade – a span that's emphasized by the car's long hood and waterfall grille – though it's not quite as wide. While clearly a showcar, the beautifully crafted interior looks largely produceable, including attributes like a next-generation 12-inch touchscreen infotainment system and 4G LTE wifi, but we suspect a production car would pick up a third rear seatbelt and give away some of its flowing contours that are said to have been "inspired by nature and sea waves receding on a beach." No word yet on whether there's actually a showroom future for a car like this – it could simply be an exercise designed to test the waters for a next-generation LaCrosse. After all, sedans aren't exactly popular concept fodder these days, especially as crossovers continue to eat into traditional sedan sales in many of the world's markets. However, China still loves the coddling rear seats of a proper four-door sedan (which in this case include silk and bamboo elements), and with a majority of Buick sales happening in the People's Republic, the Asian nation controls the destiny of this General Motors brand. Said another way? Anything is possible, especially with General Motors known to be working on a large flagship sedan for Cadillac already – the Avenir is reportedly based on the same Omega architecture that will underpin the forthcoming CT6. What do you think? Is this a promising direction for the resurgent Buick? Scroll through our gallery, check out the video, and then have your say in Comments.

GM recalls 64k 2011-2013 Volts over carbon monoxide fears, stop sale on Trax and Encore

General Motors is recalling 50,249 Chevrolet Volts from the 2011-2013 model years in the US and an additional 13,937 exported examples because of fears over carbon monoxide buildup. According to a statement, if a Volt is accidentally left on while running on electric power, its internal combustion engine would eventually kick on to charge on the battery. If this happens in an enclosed space, then carbon monoxide can fill the area, leading to a potential exposure to the dangerous gas. According to GM, there have been two injuries reported due to this issue. To fix the problem, there's a software update to limit the time the vehicle can idle. According to Automotive News, GM is also issuing a stop sale on about 2,300 examples of the 2015 Chevrolet Trax and Buick Encore. In these compact crossovers, it's possible that the steering column assembly could touch the power steering circuit board and cause damage over time. This could potentially cause the system to stop working. Automotive News indicates that the automaker is still working with the supplier to get the necessary parts to repair this problem. General Motors is recalling 50,249 Chevrolet Volts in the U.S. from the 2011-2013 model years to implement a software update that will limit the amount of time a vehicle can be left idling in the "on" or "run" position. If a driver exits the vehicle and inadvertently leaves the vehicle "on" by failing to react to cues and warning chimes emitted by the vehicle, the vehicle's high-voltage battery will drain after a period of time and the gasoline engine will begin to run. If the gas engine runs for a long period of time within an enclosed space, such as a garage, carbon monoxide could build up. GM is aware of two injuries, both related to carbon monoxide build up. The total recall population including Canada and exports is 64,186. Related Video:

Little-bit-bigger 2020 Buick Encore GX gets two three-cylinder engines

Ford broke the ice on selling three-cylinder engines in the U.S. with the 2014 Fiesta, then followed up with the EcoSport. Buick is about to widen that supermini-sized crack in the ice with the 2020 Encore GX. The semi-subcompact crossover will come in three trim levels that mix-and-match two turbocharged three-cylinder engines, two transmissions, and two drivetrains. The smaller engine is a 1.2-liter three-pot with 137 horsepower and 166 pound-feet of torque. This comes in one horse and 18 lb-ft of twist beyond the 1.4-liter four-cylinder in the smaller Encore. This engine will only be paired with a CVT and front-wheel drive in the Preferred, Select, and Essence trims. The meatier motor is a 1.3-liter three-cylinder with 155 hp and 174 lb-ft. That's down on the 163 hp and 177 lb-ft that the same engine produces in the Chinese-market version of the Encore GX. However, it gets buyers close to the 1.4-liter turbocharged four-cylinder that used to be optional on the smaller Encore, producing 153 hp and 177 lb-ft. This engine can be optioned on the front-wheel drive Select and Essence trims, where it would be mated to the CVT. The 1.3-liter three-cylinder is standard on all trims optioned with all-wheel drive, where it gets paired with GM's nine-speed automatic. GM does say the horsepower figures are estimates at the moment, so don't be surprised at any slight changes before deliveries begin next year. The Encore GX will serve buyers who would love it if the Encore had a bit more room but don't want to step up to the Envision. For a price GM hasn't announced yet, the Encore GX will reward those buyers with five more feet of cargo space, and some extra power for all those who decide to level up further. The junior Encore weighs just over 3,200 pounds, it's likely the Encore GX will shade that some. The Encore GX does ride on GM's new VSS-F platform, though, so the advanced architecture could provide an overall superior experience even with the lesser three-cylinder. GM has also said that the Encore GX will come standard with safety kit like forward collision alert and lane keep assist with a lane departure warning, features that are cost extras on the Encore. The Encore GX will also include automatic emergency braking, which can't be had on the Encore at any price.