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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.

GM applies for 'Enspire' trademark for the second time

When we wrote about the Buick Enspire concept debut in China earlier this year, we said "we wouldn't be surprised to see either an all-new crossover, or a redesigned current model, sporting the designs seen on this concept." Now it appears General Motors might be planning to go with Option A. GM Authority discovered a trademark application for the name "Enspire," to be applied to "Automobiles, excluding motor homes." This is the second time GM filed for the name, the first being in 2015. As always, applications don't mean certainties. However, we know Buick has a range of new models in development, it's losing the LaCrosse sedan and its crossovers sell quite well. If there's to be a new vehicle called Enspire, it shouldn't be hard to guess what kind it would be. GMA's previous investigations picked up clues that there'll be two new Buick crossovers, one about the size of the China-sourced Envision and sitting on the E2 platform that supports the Cadillac XT4, Chevrolet Malibu, and Buick Regal. Based on data in an IHS Automotive document, the site said the putative Enspire's platform code is E2UB, the U for utility vehicle, the B for Buick. The other crossover would sit above an Envision, below the Enclave, on the short-wheelbase C1 platform employed by the Cadillac XT5. We can probably take the Enspire concept's design cues as a preview of the future, if not its electric drivetrain. Designers carved the wide, formidable stance with curved and elongated versions of traditional Buick brand cues, such as the grille crossbar stretching into the headlights. A futuristic, art-filled and screen-heavy interior contrasts with genuine wood, and is probably best not to look at because Buick couldn't bring anything like it to production. The electric drivetrain included a 550-horsepower electric motor and enough battery to power a 370-mile range. Those figures seem a little outlandish given the potential price tag and the Buick badge. Besides, GM has other plans for a dedicated EV powertrain in development that should bow around 2021, and a Buick EV based on the Chevrolet Bolt's BEV II architecture. As such, a conventional powertrain seems more likely for an Enspire crossover, at least initially. The same IHS Automotive document said the E2UB vehicle would go into production in Shanghai in late 2019.