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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.

GM recalling 8.4M cars, 8.2M related to ignition problems

General Motors today announced a truly massive recall covering some 8.4 million vehicles in North America. Most significantly, 8.2 million examples of the affected vehicles are being called back due to "unintended ignition key rotation," though GM spokesperson Alan Adler tells Autoblog that this issue is not like the infamous Chevy Cobalt ignition switch fiasco.
For the sake of perspective, translated to US population, this total recall figure would equal a car for each resident of New Hampshire, Rhode Island, Montana, Delaware, South Dakota, Alaska, North Dakota, the District of Columbia, Vermont and Wyoming. Combined. Here's how it all breaks down:
7,610,862 vehicles in North America being recalled for unintended ignition key rotation. 6,805,679 are in the United States.

Junkyard Gem: 1973 Buick LeSabre Custom Hardtop Sedan

The steps on Alfred Sloan's "Ladder of Success," in which you'd start your career by buying a Chevrolet and then move up through the GM marques as your wealth increased, stayed rigidly fixed from the 1930s into the late 1960s. By the early 1970s, though, "prestige creep" among The General's divisions had set in, with lower-zoot marques leapfrogging their betters with ballooning price tags and snob appeal; a fully-loaded Chevy Caprice could cost more than an Olds 98, a Pontiac Bonneville could out-snoot a Buick LeSabre, and the LeSabre itself came to threaten mighty Cadillac at the top of the GM pyramid. Here's a fully depreciated '73 LeSabre Custom Hardtop Sedan, once the picture of Malaise Era opulence but now brought down to earth in a San Jose self-service car graveyard. The high-rollingest of all LeSabres in 1973 was the Custom (though shoppers for full-sized 1973 Buicks really wishing to rub the noses of their lessers in their success could opt for the even pricier Centurion or Electra 225), and that's what I found among the Achievas and Cateras of this yard's GM section. Wasps now nest in the rust holes caused by rainwater seeping beneath the padded vinyl roof, but this car once told the world, "I've made it!" It went without saying that your big, comfy Detroit luxury sedan had a big, comfy front bench seat; let those frivolous rakehells in their Rivieras have their bucket seats. Believe it or not, a three-on-the-tree column-shift manual transmission was still standard equipment on the lower-level Buick Century in 1973, but all LeSabre buyers enjoyed two-pedal luxury that year. Some junkyard shopper grabbed the massive 455-cubic-inch (7.5-liter) V8 — rated at 225 horsepower, due to Nixon's stricter emissions standards and the switch from gross to net horsepower ratings — before I got here. I'm guessing this car got driven into the ground by the early 2000s (there's a 2001 calendar inside) and then spent the next couple of decades bleaching in the harsh South Bay sun before arriving here. So good, shoppers bought them sight unseen!