Driven: 2012 Buick LaCrosse eAssist

Hybrid or V-6? That's the choice Buick is offering LaCrosse buyers for 2012, and neither option is extra-cost.

The V-6 is a 3.6-liter that makes 303 hp, which is considerably more power than you get with the 4-cylinder hybrid. The V-6 also is alone in offering the option of all-wheel drive.

The hybrid, which Buick calls eAssist, is a mild hybrid, in that it can't propel the car solely on electric power, even at low speeds. Instead, as the car's name implies, it assists with 15 hp and 79 pound-feet of torque, helping the 182-hp four-cylinder accelerate this 3835-pound car. More importantly, it allows the engine to shut down at stoplights and then smoothly and instantly restart, aiding the cause of fuel economy. Speaking of miles per gallon, the LaCrosse eAssist is EPA rated at an impressive 25/36 mpg. That's much better than the 19/30 mpg for unassisted four-cylinder offered previously, not to mention far more economical than the V-6's 17/27 mpg.

A six-speed automatic, instead of a stepless CVT, gives the LaCrosse conventional-feeling throttle response rather than the elastic response conveyed with a CVT. Speaking of response, though, with the LaCrosse's ultra-tall final drive ratio, you really have to put your foot into it to awaken this powertrain. On a positive note, the 2.4-liter Ecotec --which, like many direct-injected four-cylinders, is not known for its mellifluous sound quality -- here has been so effectively muffled that could almost be a V-6, at least under 3000 rpm. And the car is very quiet overall.

If that's what you'd expect from a Buick, then so too is the chassis. The car comfortably sops up bumps but would benefit from greater damping of body motions, to quell squat and dive. The electrically assisted power steering is rather numb and artificial-feeling.

As in many other hybrids, the eAssist battery pack is located behind the rear seat, and it takes up a bit of trunk room (as do the old-fashioned-style gooseneck hinges and their big plastic housings).

Read more: http://www.automobilemag.com/reviews/driven/1111_2012_buick_lacrosse_eassist/viewall.html#ixzz1eZ8D7sJg

LaCrosse GL Concept Refines Buick’s Signature Style

LOS ANGELES – When designers set out to capture the essence of Buick luxury for the LaCrosse GL concept vehicle, they looked to the fine cuisine, heirloom objects and enriching experiences the brand’s customers savor. The design study is on display at the L.A. Auto Show through Nov. 17.

Buick’s color and trim designers worked from a palette of cabernet red, dark cocoa brown and caramel choccachino. They took inspiration from the burnished metal of antique jewelry, ombré patina on vintage guitars and flocked lining of keepsake boxes. For GL’s French-stitched premium leather seats, the designers looked to the understated elegance of classic club chairs and contours of windswept sand dunes. And their use of smooth suede for the headliner is designed to invite one’s touch like a favorite pair of gloves.

“The LaCrosse GL concept expresses Buick’s distinctly human kind of luxury – one that is as warmly inviting as it is elegant and refined,” said David Lyon, executive director of design. “The design cues that already distinguish the production LaCrosse – such as the premium leather-upholstered seats, ice blue ambient lighting and soft touch surfaces – are amplified in the GL and serve as inspiration for future Buick models.”

LaCrosse GL’s cabernet red exterior paint is complemented by brushed and tinted chrome accents on the grille, door handles and deck lid, as well as around the windows, taillights and headlights. Machine-face, satin-finish 20-inch rims fill the wheel wells for a firmly planted appearance.
“The brushed-and-tinted chrome trim gives the GL a more subdued appearance than if we had used bright chrome. The overall effect is more in keeping with Buick’s quietly confident aesthetic,” said Magdalena Kokoszynska, creative designer on LaCrosse GL.

Read More: http://media.gm.com/content/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2011/Nov/1109_lacrosse_gl

Driven: 2012 Buick Regal GS

How does a European sport sedan dovetail with an American luxury brand that exists because the Chinese want to ride in the back of pillowy four-doors? It's a mind-melting philosophical question, but the answer is simple for the masters of brand management. After a seven-year sabbatical, the forty-seven-year-old Gran Sport name is back.

The Buick Regal GS has its roots in Europe's Opel Insignia OPC, but don't call this a badge-engineering exercise. Buick opted not to use the OPC's strident 2.8-liter twin-turbo V-6 and Haldex all-wheel-drive system in a play for lower weight and higher fuel economy. Instead, our GS has a high-output version of the Regal Turbo's direct-injected, boosted four-cylinder driving the front wheels. Even so, compared with an Audi A4, the GS is about 200 pounds too heavy (at 3710 pounds) and comes up at least three miles short for every gallon of gas it swills (at 19/27 mpg city/highway).

Dialing the boost pressure from 15 psi to 20 psi pushes power from 220 hp to 270 hp and smooths out some of the awkward surges that plague the Regal Turbo. Despite the more civilized power delivery, the GS-tuned engine is still afflicted with subtle, uneven pulses at part throttle, and the turbocharger whistles and whirs like it's bolted into a Class 8 truck. At full tilt, it doesn't sound more exciting than any other frenzied four-cylinder, but the 2.0-liter turbo delivers prolonged bursts of power that stretch all the way to redline. Its 295 lb-ft of peak torque isn't reached until 2400 rpm, which translates to a single breath of lag leaving the line.

To combat torque steer, the GS employs the so-called HiPer Strut front suspension that decouples the steering and suspension geometries. It can't eliminate every tug at the steering wheel, but it does reduce the severity enough to turn punches into prods. The Sachs adaptive dampers are similarly adept at softening blows -- at least in their most compliant standard setting. There's now a mode (on top of sport) called GS that makes the ride -- and body control -- substantially tauter. Few adaptive suspensions manage to effect changes that are both as palpable and as constructive.

The nicely contoured steering wheel is backed by quick responses and a natural effort, although there isn't much feedback from the front wheels. New sport seats offer excellent bolstering without being too aggressive, and the six-speed manual swiftly clicks through light throws. (A six-speed automatic becomes available in early 2012.) Driven quickly over back roads, the Regal GS displays obedient fluidity, impressive composure, and surprising balance. The optional twenty-inch Pirelli PZero summer tires stick impressively through corners, and the chassis responds positively to trail-braking. The Regal GS doesn't have the connected, organic feel of the best sport sedans, but it is much sharper and more fun than an Acura TSX V-6 and more alert than an Audi A4.

Read more: http://www.automobilemag.com/reviews/driven/1112_2012_buick_regal_gs_driven/index.html#ixzz1ckYgf5Ea

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