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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 Regal GS First Drive Review | More power, style and doors

During our test-drive of the 2018 Regal GS, Buick took us to Atlanta Motorsports Park and hired stunt drivers to teach us mild-mannered journalists how to do a J-turn. It's an emergency maneuver, also known as a Rockford, in which the car reverses at full speed, spins 180 degrees and takes off in the exact opposite direction from where it was headed. It symbolized perfectly Buick's hopes for the Regal GS, its most ambitious attempt yet at a bona fide American sports sedan. Buick is trying to shake off decades of stigma as a maker of grandpa-spec wafters. Since 2008, it has been rebadging the Opel Insignia, developed by GM's German subsidiary and built in Russelsheim, as the Regal. In 2012, Buick revived the Regal GS badge, providing power from a 2.0-liter turbo four, initially at 270 horsepower but then detuned to 259 hp in 2014 as AWD was introduced. Buick had high hopes of challenging the luxury greats, and while the previous Regal GS received good reviews as a genuine sports sedan, it never really caught on in the marketplace. Buick took a risk by redefining the brand, but ultimately, it wasn't quite successful enough to be uttered in the same breath as BMW, Mercedes-Benz and Lexus. The 2018 Regal GS doubles down on that lofty goal with a better-fleshed-out version of the outgoing car. It returns with improved styling and even more power, courtesy of a naturally aspirated 3.6-liter V6 generating 310 horsepower and 282 lb-ft of torque. In other words, the new GS is up 40 horses, but down 13 lb-ft with an engine that comes straight from the GM parts bin. Within GM, it is known as the "High Feature" engine, used in everything from Cadillacs to V6 Camaros to the GMC Acadia. Autoblog has knocked this engine on refinement but generally praised its power, so it's a mixed bag. On the Regal GS, though, the drivetrain exhibited a marked improvement on the refinement front. Buick spokesperson Stuart Fowle attributed this to the new nine-speed automatic it's mated to, a quick and smooth-shifting transmission well-programmed to keep the engine at optimal revs. The result deviates quite a bit from the Opel Insignia, which maxes out with a turbocharged 2.0-liter inline-four good for 197 horses and 300 lb-ft. With turbo 2.0-liter fours now the de facto entry-level engine for most luxury carmakers, having the 3.6-liter V6 makes the 2018 Regal GS more distinctive, a bit more American and less of a European copy-paste job than its predecessor.

GM recalls 500K Chevy Camaros for ignition-switch defect

General Motors issued a recall for more than a half million Chevrolet Camaros on Friday morning because of an ignition-switch safety hazard that mirrors the one at the center of the company's current crisis.
The problem affects Camaro models from the 2010 to 2014 model years. Approximately 464,712 cars are impacted in the United States, and 511,528 overall in North America. GM will alter the Camaro key to a more standard design, and will notify car owners with a recall notice in the mail.
In an announcement, the company said the ignition switches on the Camaros are fundamentally different parts than the older ignition switches found on defective cars that are responsible for killing at least 13 people and causing 54 crashes.