Buick has confirmed the brand’s eAssist light electrification system is returning on the 2018 LaCrosse sedan. We confirmed plans of its return back in March after the system showed up on GM’s own internal order guides.
Like the previous eAssist systems, the new one essentially pairs a lithium-ion battery pack and oversized alternator with GM’s 2.5-liter four-cylinder engine. The electrification system provides torque assist at launch, a smooth start/stop system and regenerative braking. The system will serve as the standard powertrain on the 2018 LaCrosse.
Thus far Buick hasn’t confirmed what the EPA fuel economy ratings will be on the new eAssist cars. Instead the company has just stated that it will have a city rating that is 19 percent higher than the LaCrosse V-6. The 2017 LaCrosse V-6 carries a city rating of 21 mpg. Doing the math, that would mean the 2018 LaCrosse eAssist will come in around 26 mpg city, which isn’t far from what the old system was rated.
Thanks to the new standard powertrain, the base price of the 2018 LaCrosse is dropping from $32,990 to $30,490.
In addition to the eAssist system, Buick has also confirmed that the LaCrosse V-6 will upgrade from today’s eight-speed automatic to GM’s new nine-speed automatic transmission. Buick is also expanding availability of all-wheel-drive on the 2018 LaCrosse v-6.