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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.

Pre-owned bargain alert: Buick Regal

For the past couple of years, Buick has been very aggressive in promoting short-term low-mileage leasing. The plan was to get people in the door to experience the new Buick. Once they realized Buicks are now sleek and full of Euro Chic, people might want to buy one. It's debatable if that plan worked, but one thing is for sure: There's a massive amount of low-mileage Buick Regals out there. The price of Regals is all over the map due to lease returns and dealers aggressively discounting 2015 models to get rid of them. But at the $17,500–20,000 range there are a good number of 2013 to 2015 Regals with under 15k miles for sale. The Regal might come with 2.0L Turbo or 2.4L Hybrid. The Hybrid is a bit slow; stick with the Turbo and drive with the traction control off. They all come moderately equipped with leather, heated seats, alloy wheels, and dual-zone climate control. If you have a little more cash to spend, go for the 2012/2013 Regal GS, which is based on the Opel Insignia OPC. The Regal GS comes with 270 horsepower and 295 lb-ft from a turbo engine and a HiPerStrut suspension to reduce torque steer. They all come standard with Brembo brakes, navigation, sunroof, and premium sound system, in automatic or manual. Just make sure you budget money in your savings to replace the front tires. Trust me on this. You can purchase a Camry or Accord with some equipment for under $20,000 with a bit more miles and years than the Regal. But ultimately the Regal feels more premium, drives better, and is less boring. Make the right choice and buy something unique.Related Video:

Buick to add more GS models?

Buick may not be the first name that comes to mind when you think of performance automobiles, but fans of the brand know what letters to look for. If you believe the reports, there's a new GNX and Grand National on the way, but in the meantime, Buick may offer more GS models to fill the void.
Currently, the Regal is the only model available as a GS (pictured above), packing the same 259-horsepower turbo four as the Regal Turbo but enhanced with key suspension, brakes and rolling-stock upgrades. As Car and Driver notes, similar upgrades could easily be applied to the Verano and LaCrosse, although maybe not the Encore or Enclave crossovers. Of course, Buick would still have to steer clear of Cadillac's Vsport line, but that doesn't mean it doesn't have a little room to play.