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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.

Next-gen LaCrosse, Cascada convertible coming to Buick showrooms in 2016

It's difficult to overstate how significant the post-bankruptcy years have been for General Motors' Buick brand. Arguably the most improved American automaker, Buick has rounded out its range with an excellent compact in the Verano, a well-balanced midsizer in the Regal and a segment-busting mini-CUV, with the Encore.
Seeking to keep that momentum going, the next several years will see the brand address a trio of its most obvious issues. First and foremost will be a replacement for the aging LaCrosse, a vehicle whose only bit of attention since its 2009 debut was a very light refresh in 2013.
According to Automotive News, we should expect the next-generation LaCrosse to arrive late next year or early in 2016, as a 2016 model. AN expects big design changes, as Buick attempts to further the LaCrosse from its popular platform-mate, the Chevrolet Impala. The changes won't be so radical, though, as to do away with its front-drive architecture, as the latest version of the Epsilon platform will underpin the next LaCrosse. The 3.6-liter V6 is likely to carry on, although a smaller, budget-minded offering is also extremely likely (we'll eat our hat if it's not the 2.0-liter, turbocharged four-cylinder from the Regal, Verano and Cadillac CTS et al.).

The 2018 Buick Regal is now a hatchback and a wagon

Buick has long been General Motors' most traditional brand. With the launch of the 2018 Regal, it's now arguably GM's most risk-taking brand. Buick is turning its midsize staple into a hatchback, called the Regal Sportback, and a wagon, the Regal TourX. Revealed Tuesday afternoon at GM's historic Design Dome in Warren, Mich., the cars will go on sale in the fall after next week's public debut at the New York Auto Show. "At Buick we can try things other people haven't tried," GM product chief Mark Reuss said. The wagon – though Reuss was reluctant to call it one – is a longer (3.4 inches), higher-riding (0.6 inches) version of the Regal Sportback. It's the first Buick wagon since the 1990s Roadmaster, and it's aimed at the seemingly never-satiated crossover market in the United States. View 12 Photos The TourX will compete against the Volvo XC60 Cross Country, Audi A4 Allroad, Subaru Outback, and BMW 3 Series wagon. The Buick offers up 73.5 cubic feet of storage space behind the front seats and is all-wheel drive only. Power comes from a turbocharged 2.0-liter four-cylinder making 250 horsepower and 295 pound-feet of torque that teams with an eight-speed automatic transmission. "It's something that is very different and very beautiful, and it's a good alternative for Buick to try," Reuss said. The Sportback, meanwhile, offers the same four-cylinder and eight-speed trans as the TourX in AWD trim. The Sportback also offers a front-wheel-drive model that uses a four-cylinder paired with a nine-speed automatic, and the engine is rated at 250 hp and 260 lb-ft in that setup. With swoopy creased styling, the Regal Sportback offers a slightly different riff on the crowded sedan segment, which GM says still has three million annual retail sales. On a side note, Saab fans might feel some old wounds at the sight of the hatchback Buick, as the 5-door 9-3 was axed by GM in an attempt to make the model more mainstream before the brand's demise. Both models will offer front pedestrian braking, lane keeping assist, adaptive cruise control, OnStar and seven-inch or eight-inch touchscreens with Apple CarPlay and Android Auto. As expected, the Regals are based on the Opel Insignia, and they will be built in Ruesselsheim, Germany. Reuss said GM plans to build the Regals there after the company sells Opel to PSA. He also said GM isn't concerned about potential border/import taxes that could be levied by the Trump Administration. "I don't know what the border tax is," he said.