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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.

2018 Buick LaCrosse gets a mild hybrid model, lower price

Update: Buick provided us with horsepower and fuel economy figures. The text has been updated to reflect this. Buick is rolling out a variety of updates for the 2018 LaCrosse, including a new mild eAssist hybrid. Like the previous generation LaCrosse and Regal eAssist models, this one features a small electric motor and an equally small battery pack that together augment rather than supplant the gasoline engine. The motor, attached to a 2.5-liter four-cylinder engine, helps to make takeoffs smoother and provide additional torque on demand. The gasoline engine still does the majority of the work, though. Combined, the powertrain produces 194 horsepower and 187 pound-feet of torque. It will also allow the LaCrosse to get 25 mpg in the city, and 35 mpg on the highway. While the electric powertrain doesn't provide primary propulsion, it does come with other benefits. The small battery means the LaCrosse maintains a folding rear seat. The battery also provides power to accessories when the engine shuts off at a standstill. This mild hybrid powertrain will be the standard engine for all 2018 LaCrosses, and they come with a lower base price. The 2018 model will start at $31,415, which is about $1,500 less than the lowest priced 2017 V6 LaCrosse. The V6 will still be available as an option, and Buick has updated it, too. The 2018 V6 models will also all come with a new 9-speed automatic transmission. The new LaCrosses will go on sale this fall. Related Video: Image Credit: Buick Green Buick Hybrid Luxury Sedan

Junkyard Gem: 1964 Buick Special sedan

During the 1960s, the most mainstream possible vehicle for American streets was a GM-built sedan, either a full-sized B-Body or a mid-sized A-Body. These cars flew out of showrooms by the millions during the decade, and the angular 1964-1967 A-Bodies (including everything from the affordable six-cylinder Chevrolet Chevelle to the maniacal Pontiac GTO) remain sought-after by collectors to this day... provided that they're two-door hardtops. The post sedans just don't get much attention in 2018, and that's why this fairly solid 1964 Buick Special sedan didn't get rescued on its way to this sorry fate in California. Its final days before it washed up in this self-service wrecking yard, nestled between GM iron a third its age, some used-car lot failed to get $1,199 for this '64. The interior looks good, much better than what you'll see on most unrestored cars with better than a half-century on the calendar. If this car had been a Skylark two-door hardtop, its story would have had a happier ending. The decklid suffers from the kind of rust that California cars get when they sit outside for decades and the weatherstripping goes bad, and then someone at the junkyard pried it open to look for trunk goodies. There's likely to be more rust under the window trim, too. The engine was long gone by the time I got here, but it would have been a 225-cubic-inch V6 or a 300-cubic-inch V8 when new. The upscale 1964 Skylark was the same car, mechanically speaking, but it a more luxurious interior and snazzier body trim. The car that follows the fun anywhere... and above all, it's a Buick! Related Video: Featured Gallery Junked 1964 Buick Special sedan View 14 Photos Auto News Buick Automotive History Classics Sedan