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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.

Why Buick's future lies in China

Back in the last half of 2008 and into 2009, when General Motors was looking at too much capacity for too few customers, when it was running out of money and needing to go to the governments of the US and Canada and to the UAW for financial support, its management team was pretty much instructed by the feds to focus resources on what would create the best likelihood for a return on the investments and guarantees that it was getting. Things needed to be cut, and not just the corporate air fleet. This led to the elimination of Saturn, Hummer and Pontiac and the sale of Saab to Spyker. What remained of GM's North American brand portfolio was Chevrolet, Buick, Cadillac, and GMC. (Oldsmobile had been shuttered in 2004.) There were a variety of opinions regarding which brands GM should keep/lose during the midst of the Great Recession. Some thought GMC should be axed, but then it was pointed out that GMC essentially produced high-content Chevys, which resulted in fantastic transaction costs. Lots of money in the back of those pickups. Others thought Buick should be eliminated. The rationale was: Chevy was the mass-market brand, Cadillac was the luxury brand, and GMC helped leverage the company's investment in trucks. (Yes, even back then the F-Series was winning the pickup sales race, so it was always a matter of adding Silverado and Sierra sales to show that GM was solidly in the game.) So what was Buick? Better than Chevy but not as good as a Cadillac? Somehow that doesn't seem to be a particularly aspirational position to hold. But Buick's identity didn't need to be worked out in 2008-09 because there was a single compelling reason to keep it: China. According to official GM history, Pu Yi, the last emperor of China, Dr. Sun Yat-sen, the first provisional president of China, and Zhou Enlai, a Chinese premier, "Either owned, drove or were driven in Buick automobiles." What's more: "According to statistics from the Shanghai government, in 1930 one out of every six cars on the city's roads was a Buick." Which is to say that Buick got to China early and has a major presence in that market. When the Regal Sportback and Regal TourX were being unveiled at the GM Design Dome the first week of April, Duncan Aldred, vice president of Global Buick, gave a briefing of Buick's place on the automotive landscape.

Looking back at how and why GM saved Buick

Still uncomfortably fresh in our collective minds is 2008, the year when the US economy tanked, auto sales collapsed, and both General Motors and Chrysler endured federally managed bankruptcies. Then 2009, when, among other draconian measures, the government task forces dictating what they were compelled to do to earn taxpayer financial support ordered thousands of dealers cut and GM to discontinue four of its eight US brands. Three of those chosen for GM's axe were fairly obvious: off-road icon Hummer had become politically incorrect, Swedish-born Saab was a perennial money loser, and product-starved Saturn had sadly sagged after its strong early start. On the other hand, high-volume value brand Chevrolet, luxury Cadillac, and high-profit GMC seemed clear keepers. That left Pontiac and Buick, both boasting strong brand heritage and histories but both languishing at the time with lackluster image and sales. Most believed that "old man's car" Buick would be killed and once-youthful Pontiac and its performance image would be revived. So few understood why when exactly the opposite happened: Buick lived, Pontiac died. One key factor was Buick's long, distinguished history in China. In the early 20th century, many of that country's most influential citizens owned, drove, or were driven in Buicks. By 1930, one out of every six cars on the roads in Shanghai was a Buick. So when GM launched vehicle production at a Shanghai joint-venture plant in 1999, the chosen brand was Buick. Today it remains GM's best-selling brand in that fast-growing market. Another was an appealing new design direction that began with a shapely 2006 three-row crossover concept called Enclave. Inspired by the Buick Velite concept convertible of 2004, its curvaceous "form vocabulary," GM Design vice president Ed Welburn said at the time, previewed coming Buick production car and CUV design. "The body shape flows, like there's wind blowing over it," he enthused, adding that the Enclave concept's richly trimmed cabin foretold "a renaissance in interior design for GM." And when the production Enclave arrived for 2008, followed by platform siblings from Saturn and GMC (and later Chevrolet), it indeed caught the public's eye and started selling well. And once past GM's painful and embarrassing bankruptcy, Buick has been on a major roll. Continuing to sell strongly in China while growing substantially in the US, it has enjoyed four straight years of global sales records.