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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 Chinese experiment | 2017 Buick Envision First Drive

The 2017 Buick Envision is a very good five-passenger crossover. The "but" you should anticipate will come in good time. First it's worth understanding why it exists at all. Out of the ashes of GM's bankruptcy a few flowers blossomed and the carmaker is doing exceptionally well, certainly far better than Chrysler has done in the wake of its free fall into Chapter 11. But of all the surprises at GM's turnaround, Buick surely ranks highest, without question the least likely player to thrive if you only study the North American market. Look farther than our shores, to China, however, and you won't be shocked. Note that the Envision, which has been on sale in China for a year and a half, will reach about 200,000 units this year; the entire Buick portfolio in the US only totaled 223,000 cars in 2015. Not only is China Buick's primary market, but what it makes there, like the Envision, is intended for a different sort of buyer. Here, we'd call it a compact crossover. In China the Envision is a relatively large car, and the buyer there is far more likely to use it as a tall limo, or at the very least, as a big-time status statement. That buyer is also very likely to be in his or her mid-30s – the average Buick buyer in the US is getting younger, but, at 58, is hardly a millennial. Still, Americans who buy the Envision will benefit from all of this China focus. Huge effort went into its development since the target competitor in China is the Audi Q5, according to Rick Spina, Executive Chief Engineer for the Envision. Spina explained that Buick went to the trouble and expense of isolating the entire chassis from engine, suspension, and driveline vibration and sound penetration. "If you look at non-luxury models like Ford Escape, Honda CR-V, nothing's isolated, everything is hard-bolted to the body, and so all that vibration goes into the frame." Spina says that even though you'd guess the China-built Envision shares the general parts bin of the Chevy Cruze and Equinox, it's almost entirely unique. "It's kind of an orphan," he says, because GM couldn't afford to invest in the ride tuning Buick had to have to compete with Audi in China for a volume Chevy product, so nothing from Chevy (for now) is on this platform. And although it would have made sense to have Cadillac or GMC share it, Cadillac's XT5 and GMC's Acadia were already on a different development cycle. Besides, he's pretty proud that the Envision was developed strictly for Buick.

Buick Encore GX fuel economy out, 1.3L more efficient than 1.2L

EPA fuel economy ratings for the 2020 Buick Encore GX are out, the most powerful engine taking the overall trophy. The new, slighty-less-compact subcompact crossover comes with a turbocharged 1.2-liter three-cylinder as its base engine, putting out 137 horsepower and 166 pound-feet of torque. Available solely with front-wheel drive and with a continuously variable transmission, the powertrain gets 26 miles per gallon in the city, 30 on the highway and 28 combined. The optional engine is a turbocharged 1.3-cylinder with 155 hp and 174 lb-ft. Mating it to the CVT in front-wheel drive guise returns the best fuel economy in the Encore/Encore GX family, being 30 city, 32 highway, 31 combined. That's spot on GM's prediction last year for combined fuel economy. Buyers who opt for the 1.3-liter with all-wheel drive — the engine costing an additional $395, the drivetrain a $2,000 upgrade — get a nine-speed automatic transmission, that combo returning 26 mpg in the city, 29 mpg on the highway and 28 mpg combined. Among luxury front-wheel drive entries, the 2020 BMW X1 sDrive28i gets 27 mpg combined utilizing an eight-speed automatic, the Lexus UX 200 gets 33 mpg combined with a CVT. Among less the expensive options, the Nissan Kicks returns 33 mpg as well through a CVT, the Mazda CX-30 rated at 28 mpg combined and employing a six-speed auto. The Encore once offered two versions of its turbocharged 1.4-liter, but is now left with the lesser-powered unit producing 138 hp and 148 lb-ft, paired with a six-speed automatic. Fuel economy with front-wheel drive is 25 city, 30 highway, 27 combined; with all-wheel drive, that shrinks by one mpg across the board to 24 city, 29 highway and 26 combined. The Encore GX is scheduled to hit dealership sometime this spring. Related Video: