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2018 Buick Enclave: How engineers made it larger, lighter, more sophisticated

Buick used the unveiling of the 2018 Enclave at the New York Auto Show to introduce its new range-topping Avenir sub-brand to the world. With fancier interior finishes and exterior details, it's Buick's latest effort to make itself a proper luxury brand (or perhaps re-establish itself as such). However, lost in the Avenir song and dance is the fact that the 2018 Buick Enclave is a (very) long-awaited all-new model regardless of the trim level one selects. Like the Chevrolet Traverse upon which it is based, the new Enclave is bigger than the vehicle it replaces but considerably lighter, by about 400 pounds. "We told every engineer, 'get your job done, but then take the weight out,'" said engineer Rick Spina as we hovered next to his larger yet lighter creation. His team therefore set about taking a little bit of weight out from just about everywhere, from using additional aluminum in the suspension to varying the thickness of the frame (thicker in places that needed to be stronger, thinner and therefore lighter in places that didn't). Only about 100 pounds came out of the body with the rest coming from elsewhere. Not only will the reduced weight improve fuel economy (Buick-estimated at 19 mpg combined with FWD versus 18 for the 2017 model) and presumably the old Enclave's rather ponderous handling, but it should only make things easier for the new powertrain: General Motors' now-familiar 3.6-liter V6 and its latest nine-speed automatic. With 302 horsepower and 260 pound-feet of torque, Buick says the new engine will need 7.2 seconds to reach 60 mph with FWD or 7.5 seconds with AWD. That's a second quicker than before. Besides acceleration, towing is also bumped up by 500 pounds to 5,000. For those models with all-wheel drive, the Enclave has the same basic system featured on range-topping versions of the Buick LaCrosse. Besides power being sent front and rear, it can also differ from right to left in the back, although Spina is quick to point out that capability is for traction-enhancing purposes rather than sporty, handling-enhancing torque-vectoring ones. Buick owners already appreciated the Enclave for its quietness so the engineers decided to take it that much further. This included altering the exhaust, improving body sealing (there are triple door seals), including active sound deadening and utilizing advanced materials that absorb sound as opposed to simply being thick, dense and heavy enough to keep it out.

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.

GM recalling 250,000 SUVs over door electronics

After a door-fire investigation that dates back to February, the National Highway Traffic Safety Administration has officially announced a recall today that affects around 250,000 General Motors SUVs for a faulty driver's door module. The recall applies to the Buick Rainier, Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender and Saab 9-7X from the 2006 and 2007 model years, as well as the 2006 Chevrolet Trailblazer EXT and GMC Envoy XL for vehicles sold and/or registered in the Snow Belt.
Road salt use in these midwestern and northern states can lead to corrosion of the driver's door module on these GMT360 and GMT370 vehicles, which allows water to come in contact with the circuit board. If shorted out, the vehicle's power door locks and power windows will not work, and could possibly lead to overheating and, in some circumstances, a fire. No official word on how many total vehicles caught on fire, but back in June, 28 fires had been reported to the government agency. A fix for the problem is still being worked out, but all affected vehicle owners will be notified by GM.
Scroll down for the official NHTSA statement.