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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.

J.D. Power study sees new car dependability problems increase for first time since 1998

For the first time since 1998, J.D. Power and Associates says its data shows that the average number of problems per 100 cars has increased. The finding is the result of the firm's much-touted annual Vehicle Dependability Study, which charts incidents of problems in new vehicle purchases over three years from 41,000 respondents.
Looking at first-owner cars from the 2011 model year, the study found an average of 133 problems per 100 cars (PP100, for short), up 6 percent from 126 PP100 in last year's study, which covered 2010 model-year vehicles. Disturbingly, the bulk of the increase is being attributed to engine and transmission problems, with a 6 PP100 boost.
Interestingly, JDP notes that "the decline in quality is particularly acute for vehicles with four-cylinder engines, where problem levels increase by nearly 10 PP100." Its findings also noticed that large diesel engines also tended to be more problematic than most five- and six-cylinder engines.

GM applies to trademark Buick Envision GX

GM Authority found a GM application with the U.S. Patent and Trademark Office to reserve the name Buick Envision GX. We can't be certain, but it seems this all but confirms that the three-row Buick Envision, which debuted a year ago in China as the Envision Plus (pictured), will sell here as the Envision GX. Doing so would reinforce the naming convention established in the U.S. with the Encore and slightly larger Encore GX. Adding a third row to the compact two-row Envision extends three of of four dimensions. According to specs the Chinese transport ministry put online last year, the three-row Envision will be 190.7 inches long on a 111.5-inch wheelbase, increases of 8.2 and 2.1 inches, respectively. Height grows by 2.7 inches as well, only the 74.1-inch width holding steady.   That length has been utilized to make life easier for second- and third-row passengers. The Envision Plus in China comes with 2+3+2 seating, the second-row bench able to slide 9.8 inches. Behind that, cargo volume with the second and third rows stowed climbs from 52.7 cubic feet to 58 cubic feet. The sole engine will be the current Envision's 2.0-liter four-cylinder, making 228 horsepower and 258 pound-feet of torque, sent to the wheels through a nine-speed automatic. Power gets sent to the front wheels as standard, and all-wheel drive will be an option.  On top of the extended rear overhang on the seven-seater, GM designers slipped in a few cosmetic changes to set it apart from the five-seater. A new horizontal trim piece connects the headlights, the lower bumper getting a pair of larger, reshaped intakes. A complementary horizontal slash connects slimmer taillights, the license plate surround squared off instead of trapezoid-shaped.  Related video: