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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 aces IIHS crash tests

If you had any qualms about the safety of a Chinese-built car, set them aside. At least when it comes to the Buick Envision. The Insurance Institute for Highway Safety (IIHS) has tested the new GM crossover and it passed with flying colors. The Envision is the first Chinese-built Buick sold in the States, and it's also the first Chinese-built car the organization has ever tested. In what is an impressive feat for any new automobile, it earned the IIHS TOP SAFETY PICK+ rating. This means the crossover comes equipped with a forward collision warning system and earned "Good" marks in all types of collisions, including the difficult small overlap crash test. In addition to the forward collision warning system, an automatic emergency braking system is available on the Envision. Eleven other vehicles earned the TOP SAFETY PICK+ rating, including models from Volvo, Lincoln, Acura, Audi, Mercedes-Benz, Lexus and Infiniti. That's good company, and combined with a pleasant, if not world-beating, driving experience, should make the Envision a car worth consideration. Related Video:

Buick working on Encore refresh

It's been three years now since the model we know as the Buick Encore (sold overseas as the Vauxhall/Opel Mokka) first hit the scene. That makes it about due for a bit of a facelift, and judging from these latest spy shots, that's precisely what General Motors seems to be up to. The nose of this prototype (intriguingly wearing Buick badges but German plates) is all covered up, so it's hard to tell what Buick and its European counterparts have in store for the front-end restyling, but the fact that they've covered it so extensively tells us that somethings afoot. The tail should also get new lights and bumper as well. You can fully expect GM to take the opportunity to refresh the cabin while it's at it with tweaked ergonomics and new equipment. Meanwhile our sources tell us the 1.0-liter inline-three from the new Corsa could find its way under the Opel/Vauxhall's hood to join the current lineup of four-pots, but it's too early to say whether that engine might find its way across the pond to the Buick version as well.