2010 Buick LaCrosse to offer new direct-injection four-cylinder

The new 2010 Buick Lacrosse has made waves with its attractive design and overall build quality since its unveiling at the Detroit Auto Show in January. Today General Motors went into more detail on the car with a web-based launch presentation, revealing that the powertrain lineup will include not only the 3.0L and 3.6L V6s previously announced, but also a new Ecotec 2.4L direct-injection four-cylinder.

That means that all three engines available in the LaCrosse lineup will feature direct injection technology. “Direct injection is a key component of GM’s ongoing strategy to use advanced propulsion technology to help us deliver more fuel-efficient cars today and in the future,” said Tom Stephens, vice chairman, Global Product Development. “GM is using multiple technology pathways to achieve increased efficiency and to diversify energy sources – and we’re applying them where they make the most sense for customers when it comes to efficiency, performance and cost.”

But the real news in terms of powertrain is the availability of the 2.4L Ecotec four-banger. Initially the engine will only be available on the CX-level trim, but it could go further if demand warrants it.

The engine itself, while not all-new, is another evolution of the Ecotec engine line that delivers 182hp (136kW) and 172lb-ft (233Nm) of torque while managing an estimated 20mpg city and 30mpg highway in the LaCrosse sedan. Those aren't particularly impressive numbers until you remember that the LaCrosse is a fairly large vehicle. Buick thinks about 25% of buyers will opt for the four-pot.

Since Buick is aiming the LaCrosse directly at competitors like the Acura TL and Lincoln MKZ, which don't offer a four-cylinder option to fuel-conscious buyers, the GM brand thinks it has an advantage even before the street-level comparisons begin.

The 3.0L and 3.6L V6 engines, both part of GM's High Feature V6 range, will also be available, with the larger engine standard equipment on the higher-spec CXS trim. For more about these engines, or the various trims and equipment available, read our original release story here. In the future, a hybrid variant is also likely. Speaking at the online web launch of the LaCrosse today, GM's global mid-size line executive Jim Federico said, "There is a future for alt. propulsion in our midsize vehicles, we are just not at the point to share the details."

Buick is counting on the new look of the LaCrosse to draw in new buyers, bring down the average age of its customer base, and help to continue the 'renaissance' started with the new Enclave SUV.