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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.

The last Buick Cascada unceremoniously rolls off the assembly line

Motorists in the market for a new Buick Cascada need to act fast. Peugeot-owned Opel has built the last example of the drop-top model in its Gliwice, Poland, factory, and there's no replacement in sight. Buick announced the Cascada's demise in early 2019, and GM Authority learned the model went out unceremoniously. There's no indication that the final example received a commemorative plaque on its dashboard, or is headed to a private collection; photos of it aren't even available. The dealership who ordered it might not know it's about to receive the last specimen of the breed. As a non-luxury, front-wheel-drive convertible, the Cascada was marooned on an island that Buick's rivals abandoned halfway through the 2010s. The Chrysler 200 Convertible and the Volkswagen Eos were discontinued after the 2014 and 2015 model years, respectively. Landing in a class of one likely raised more than a few eyebrows in Buick's product planning division, but it was a semi-enviable position that helped the firm sell about 17,000 units of the Cascada between the 2016 and 2019 model years. It proudly pointed out about 60 percent of buyers were new to General Motors. Left-hand-drive examples of the Cascada were sold under the Buick and Opel banners. Right-hand-drive models joined the Vauxhall range in the United Kingdom, and they wore a Holden emblem in Australia. The four flavors were identical with the exception of some brand-specific trim pieces and powertrains. None will get a successor; the aforementioned carmakers are no longer operating under the same roof, and the global convertible segment is steadily shrinking.  The Cascada's multinational provenance made more sense before General Motors sold its Opel and Vauxhall divisions to PSA Groupe, the Paris-based carmaker that owns Peugeot, Citroen and DS. The French firm pledged to keep producing cars for Buick for as long as necessary, but the former sister companies tacitly agreed to stop co-developing vehicles. The sedan and station wagon variants of the Regal are now the only Opel-designed, PSA-built model left in the the Buick portfolio.

Buick shows US dealers 2016 Cascada convertible

The affordable four-seat convertible has become a largely forgotten genre in the States, especially with the death of the Chrysler 200 Convertible. Of course, there are still premium options from Audi, BMW and Mercedes-Benz - not to mention more overtly performance-oriented droptop pony cars from Chevrolet and Ford - but if you want an affordable cruiser, you're kind of out of luck. That may be about to change, however, with renewed rumors of the Opel Cascada (pictured above) making it across the Atlantic wearing a Buick badge.
According to GM Inside News, Buick showed off the Cascada to US dealers last week, with renewed word that the company plans to bring it over from Europe for the 2016 model year. The US version will reportedly be practically identical to its German cousin in terms of styling, but the powertrain underneath is less certain. According to GMI, it may use the 1.6-liter turbocharged four-cylinder that is available in Europe with either 168 horsepower or 197 hp.
The Cascada rides on GM's Delta II platform, which also underpins the Verano, and the latest rumor certainly provides even more evidence that the convertible is probably on the way. Speculation about the droptop started when GM CEO Dan Akerson said last year that the car was on his wish list to bring over. Then, the US trademark on the name was reserved earlier this year, and the release was speculated for sometime in early 2016.