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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.

Buick Envision arrives in US next year

In a detailed piece on what General Motors has planned for the Buick brand stateside, Automotive News reports that the Envision will finally come to the US a little more than a year from now, in the latter half of 2016. The size gap between the small Encore and the large Enclave is a perfect fit for the Chevrolet Equinox-sized Envision. Assuming this actually happens, it should excite both customers and Buick dealers. In China, the Envision uses a 2.0-liter turbocharged four-cylinder with 256 horsepower and 260 pound-feet of torque, mated to a six-speed transmission. Before then, dealers sales forces will be preparing for the Cascada convertible, expected in Q1 next year. Later in 2016, around the same time as the Envision gets here, we can expect a redesigned Verano sedan. AN says it "should grow in length and interior roominess, similar to the Chevy Cruze," but the Verano already roughly matches or exceeds many Cruze dimensions. The Chinese-market Verano that premiered at the Shanghai Motor Show earlier this year probably holds some clues to what we'll see, but our version might not be an exact copy. A redesigned, lighter, and slightly larger LaCrosse will be right there with it. In 2017 the redesigned Regal appears. Following the trend, it also gets larger, but that's required because it needs to be more distinct from that larger Verano. AN suggests a new base engine will go in the Regal, perhaps something as small as the 1.5-liter turbo being lined up for the 2016 Chevy Malibu. At the other end, executives are said to be considering importing the diesel Opel Insignia wagon for the Regal lineup. If they bring the manual over, auto scribes will probably take the day off when the first one arrives, and make it an industry holiday.

Watch this phantom Buick drive itself down the highway in a snow storm

Years ago, General Motors used Buick cars to test out the idea of a "smart highway" concept. More recently, GM has been talking up its award-winning Super Cruise semi-autonomous technology that will roll out with Cadillac and make its way to Buick. The LeSabre in the video above has nothing to do with any of that.
On Interstate 15 in Utah, a man driving this LeSabre got into an accident that rearranged the front end and set the horn on permanent blare. At the time of writing this, no one is sure what happened next, but the man ended up sitting in the snow in the highway median while his car carried on down the highway without him. Passing traffic stayed well to the right.
The 51-second video below provides a different take on our autonomous future. A local newscast on KUTV covered the story the evening of the incident, but the Utah Highway Patrol didn't have any update on the fate of the LeSabre. We'll take that to mean that Buick's take on Christine could still be out on the prowl... so watch out!