2012 Buick LaCrosse
  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse front 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse front 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse rear 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse rear 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse rear 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse front 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse rear 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse front 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse front 3/4

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse interior

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse interior

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse interior

  • 2012 Buick LaCrosse
  • 2012 Buick LaCrosse rear interior

2012 Buick LaCrosse – Click above for high-res image gallery

The big news surrounding the 2012 Buick LaCrosse is the addition of General Motors' eAssist technology – a new powertrain that will help the big sedan achieve up to 37 miles per gallon on the highway. Buick will offer the eAssist four-cylinder as the standard engine in the 2012 LaCrosse, but The General's 3.6-liter V6 will be available as a no-cost option, and GM has now confirmed that the six-cylinder powerplant will get a boost in power versus the 2011 LaCrosse.

For 2012, the 3.6-liter direct-injected V6 will churn out 303 horsepower and 264 pound-feet of torque – an increase of 23 hp versus the 2011 model. However, this added power will not result in any loss of overall efficiency, with GM stating that the V6 LaCrosse's 17/27 city/highway mile-per-gallon ratings will remain intact.

The 2012 Buick LaCrosse will start production this summer. For the full details on the V6's power increase, follow the jump for GM's official press blast.
Show full PR text
New V-6 Delivers Horsepower Boost to 2012 Buick LaCrosse

Lightweight components and enhancements improve luxury sedan's performance

23-horsepower improvement with no compromise in fuel efficiency

DETROIT – The 2012 Buick LaCrosse, arriving in dealerships later this summer, will be available with a new, more powerful and fuel-efficient version of its direct-injected 3.6L V-6 engine. The engine is a no-additional-cost alternative on select trim levels to the standard 2.4L four-cylinder engine with eAssist.

The 3.6L V-6 with variable valve timing delivers a SAE-certified 303 horsepower (223 kW) on the front-wheel-drive LaCrosse – an increase of 23 hp (17 kW) – and 264 lb.-ft. (358 Nm) of torque with no loss in fuel efficiency (17 mpg city / 27 highway). An all-wheel-drive version, which is yet to be rated, also will be available.

"The changes we've made to the 3.6L V-6 represent greater refinements to an already well-balanced package," said Tom Sutter, global V-6 chief engineer. "We are using the latest designs, lighter-weight components and enhancements to improve the engine's performance, efficiency and durability."

The lighter-weight aluminum alloy V-6 is more powerful than its predecessor partly because of its new cylinder head design, which has a revised intake port design that enhances airflow to the combustion chambers. Larger-diameter intake valves in the heads and new, longer-duration intake camshafts help provide the engine's boost in horsepower.

By using larger valves and holding them open longer, more air is pulled into the combustion chamber, for more powerful combustion. Often, the tradeoff for greater power is greater fuel consumption, but engineers optimized the fuel system for the engine's performance parameters.

"As a result, there is more power without sacrificing fuel economy," Sutter said. "The more-efficient combustion also means reduced emissions."

The engine retains direct fuel injection, enabling greater combustion efficiency, but uses a new fuel pump and a new, isolated fuel rail. The new fuel pump is quieter, while the isolated fuel rail further reduces fuel system noise to help maintain LaCrosse's quiet-tuned operation. Direct injection also delivers reduced emissions, particularly on cold starts, where hydrocarbon emissions are cut by about 25 percent.

The new V-6 uses several lighter-weight components that help maintain LaCrosse's fuel efficiency while boosting its horsepower. The new integrated cylinder head/exhaust manifold design saves about 13 pounds compared to the cylinder heads and manifolds of the previous engine, while the new composite intake manifold saves about 5.5 pounds. Additionally, a light-weight structural front cover and lightweight, high-strength connecting rods bring the total weight savings to 20.5 pounds, improving fuel efficiency and enhancing the feeling of driving balance.

"Thanks to increased use of lightweight components and other enhancements, the new 3.6L V-6 offers 2012 LaCrosse buyers improved acceleration with no hit to fuel efficiency," said Doug Osterhoff, LaCrosse product marketing manager. "This new engine is an attractive option on the car that's been widely hailed as one of the most attractive luxury sedans on the road today."


I'm reporting this comment as:

Reported comments and users are reviewed by Autoblog staff 24 hours a day, seven days a week to determine whether they violate Community Guideline. Accounts are penalized for Community Guidelines violations and serious or repeated violations can lead to account termination.


    • 1 Second Ago
  • 35 Comments
      SYJ
      • 3 Years Ago
      Key competitors for this car are TL and ES350. Sonata isnt in the mix. Hyundai fans pretend that EVERYTHING out there is only to be compared to the Hyundai of thier choice.
        libertedelacroix
        • 3 Years Ago
        @SYJ
        Hyundai haters pretend that NOTHING hyundai makes can be compared to ANYTHING because it's "just a Hyundai". Don't be mad at Hyundai for producing a vastly superior car, you should instead be mad at GM for not giving them a good run for their money (I am rooting for Buick, I think the eAssist model with be not just an amazing piece of engineering but quite economical in terms of value-to-dollar ratio).
          libertedelacroix
          • 3 Years Ago
          @libertedelacroix
          First off, I think there are way less Hyundai fanboys than you think. Every post on here that is pro hyundai has been downvoted. Face it, Hyundai beat GM fair and square. Did they beat ford? Not really. How about other competitors like the Kizashi? Those still have some advantages over the sonata. What advantage does this particular car have over anything Hyundai makes? Nothing. Hey, I bought a VW CC so I am by no means a Hyundai fan (couldv'e had a Genesis for the same price as my Lux Limited Plus), still chose the CC based on styling and driving dynamics. Your blind fanboyism to GM is not hurting Hyundai, but it is hurting GM because not only are you holding back innovation and the ability to BEAT hyundai, but you make GM look bad too. I never once stated Hyundai was the best car company or anything of the sort, whereas YOU blindly ignored FACTS. Better economy, better power, better entertainment features. Looks? Subjective. All the other stuff? Facts. I am not sure about safety and whatnot, maybe the buick has an edge there. Point is, stop being ignorant, you are only making yourself look stupid. Autoblog Trolls- time to downvote me again. The more mature and intelligent crowd on here (though these people are far and few in between since autoblog was overtaken by juvenile rabid fanboys) will realize the buick for what it is- classic styling, great interior, and decent power/economy. However, we can't ignore the fact that SOME of the competition (not all) is simply better.
          SYJ
          • 3 Years Ago
          @libertedelacroix
          How is Genesis "vastly superior"? The two cars have similar acceleration times (based on 2011 specs), similar handling figures and similar features. The Gensesis has also been criticized for a lack of refinement in terms of ride and handling. I also think the Lacrosse looks better inside and out plus the Lacrosse CXS offers an adjustable supension. Plus Genesis lacks AWD.
        VDubs
        • 3 Years Ago
        @SYJ
        Forgot about the Genesis?
          SYJ
          • 3 Years Ago
          @VDubs
          No I didnt but people are acting like the sonata competes with every sedan that costs less than $40k. Genesis is a competitor but its exterior is dull and its interior seems a little dated. It has plenty of features for the money however.
          Martin Edmonds
          • 3 Years Ago
          @VDubs
          Genesis is more expensive AND RWD. Not a competitor.
          sckid213
          • 3 Years Ago
          @VDubs
          He probably did forget about the Genesis, just like the general public has.
      Justin Campanale
      • 3 Years Ago
      When I first saw this car I could not believe it was a Buick. It really is a very good looking car. Nice job, Buick!
      • 3 Years Ago
      [blocked]
      VDubs
      • 3 Years Ago
      Hyundai's 3.8 V6 churns out 333 HP 291 torque with 19/29 mpg. Hyundai = Winning!
        Martin Edmonds
        • 3 Years Ago
        @VDubs
        Erm...is that motor in the Sonata would be this vehicles closest competitor? No? OK so I was right about you just trying to knock Buick/GM then. Carry on.
          VDubs
          • 3 Years Ago
          @Martin Edmonds
          Sorry everyone. I forgot to say 2012 Hyundai Genesis... so yes, competitors. Hyundai = Still winning!.
          Todd Fleming
          • 3 Years Ago
          @Martin Edmonds
          Vdubs thats a totally different segment. Plus I'll bet GM could hit those figures with a 3.8L but atlas they are using a 3.6L. You sound like a Hyundai fan boy or better yet, a paid poster, sad. I'll give props to GM for boosting the engine and making an already great car better.
          libertedelacroix
          • 3 Years Ago
          @Martin Edmonds
          Sorry to say it Martin, but even with inferior HP numbers, even the Sonata will get better mileage AND better performance. BUT, that is because it is apples to oranges. The Genesis is where the buick competes against (relatively soft riding, big sedans with alot of interior room, V6 vs V6 (and not turbo I4), and premium features. Sure the buick is usually 2-3K cheaper, but you get less as well. Don't be blind my man, lest ALL us consumers suffer for poor consumption choices (not saying the Buick is a poor choice, in fact, it is much better than anything from Toyota or Honda, but I bet youd still defend/buy it even if it was garbage because of your bias, thus flooding the market with a crappy product. before you refute, don't forget the past 20+years of American quality being horrendous yet still selling)
      • 3 Years Ago
      [blocked]
        Justin Campanale
        • 3 Years Ago
        No, the Sonata is a midsize, this LaCrosse is at the high end of the midsize spectrum. I would just as well go ahead and call it a fullsize.
        KaiserWilhelm
        • 3 Years Ago
        Wrong, this is quite a bit larger. Thanks for being incorrect and irrelevant!
        negative1
        • 3 Years Ago
        The Azera is more likely it but this is around 250lbs heaver than the Azera so maybe not but the 2012 Azera is rumored to have 296 hp so maybe.
      Davis Levon
      • 3 Years Ago
      The Sonata isn't but the 2012 Azera will be.
      carfan
      • 3 Years Ago
      what a beautiful car inside and out...no wonder it totally outsells the lexus. Good job Buick, hope to see this model here in Europe soon.
      postpast
      • 3 Years Ago
      I checked this car out, nice, good specs. I just have a hard time when i compare it to the cars i grew up with; Bonniville, Park Avenue, Riviara, Grand Sport. Better car but less sexy and stylish. Those who say the big three made crappy cars in the 90's must have been driving diffrent cars then I was
      black republican
      • 3 Years Ago
      Same V6 in the new STS4 I bought mom for Christmas. It's a good engine with 4WD. Decent fuel economy. http://www.epinions.com/review/2009_Cadillac_STS/content_534837628548
      ammca66564
      • 3 Years Ago
      When, when, when will the press get to drive the eAssist car? I've seen no review of it yet, and it's a very interesting car. I want more information!
      Salvatore Simonetti
      • 3 Years Ago
      I would like to know about the V-6 that is in the 2011 La Crosse ..Is there a problem with it ?? What is GM going to do with that engine.
      MayTheBestCarWin05
      • 3 Years Ago
      Engine** damn auto correct
    • Load More Comments
    Advertisement
    2015 Buick LaCrosse
    MSRP: $31,065 - $40,500
    2014 Buick LaCrosse
    MSRP: $33,535 - $40,285
    2013 Buick LaCrosse
    MSRP: $31,660 - $39,240
    2012 Buick LaCrosse
    MSRP: $30,170 - $38,820
    2011 Buick LaCrosse
    MSRP: $27,130 - $33,900
    Advertisement