Fuel-Efficient Technology

Buick's innovative eAssist Technology improves your vehicle's fuel efficiency by adding a compact electric motor and state-of-the-art lithium-ion battery to a 2.4L four-cylinder ECOTEC engine, improving fuel economy by an estimated 25%. The 2012 LaCrosse and Regal are the first vehicles available with eAssist Technology.

eAssist Technology From Buick

Buick's eAssist Technology is about improving fuel efficiency through innovations like:

• An automatic start/stop technology that shifts from gas to electric power and back seamlessly-conserving fuel. When you step off the brake, the engine restarts instantly-lag free.
• A process called regenerative braking, which transforms your vehicle's forward momentum into energy when you slow or come to a stop.
• A state-of-the-art lithium-ion battery pack stored in the trunk, which uses the energy created via regenerative braking to power the radio, climate control, and other accessories whenever the engine operates in auto stop mode.

In fact, the 2012 LaCrosse gets better highway fuel economy than the Lexus HS and Infinity M Hybrid.²

The 2012 Regal with eAssist Technology will offer better fuel economy than Acura TSX, Audi A4, and the Volkswagen CC.⁴

It's the combination of simple ideas and innovative technology that helps Buick make 36 MPG HWY⁵ a reality on the road. That means you can enjoy more time driving and fewer stops at the pump.

Power Flow Display and Eco Gauge

Buick's innovative eAssist Technology improves your vehicle's fuel efficiency by adding a compact electric motor and state-of-the-art lithium-ion battery to a 2.4L four-cylinder ECOTEC engine, improving fuel economy by an estimated 25%. The 2012 LaCrosse and Regal are the first vehicles available with eAssist Technology.

Aerodynamic Design

By reducing wind resistance and drag, we've improved aerodynamics and fuel economy. Electronically controlled front louvers in the lower grille close at higher speeds, helping air move around the vehicle and improving aerodynamics. Below the car, we've added underbody panels that cover drag-creating surfaces. You'll notice fewer stops at the pump. Everyone else will notice the eye-catching precision design of your luxury sedan.

2012 Lacrosse

The 2012 Buick LaCrosse with eAssist Technology brings innovative fuel economy together with world-class luxury to create a rewarding driving experience.

2012 Regal

Experience the power, performance, and sport-injected thrill of a fuel-efficient luxury sedan when you get behind the wheel of the 2012 Buick Regal with eAssist Technology.