The GM order guide shows a 2018 Buick LaCrosse with what appears to be an upgrade of the old LaCrosse hybrid system. It it very different from the current GM hybrid setups (50kW+) found in the Volt and Malibu. Also for the first time, it will be available in three model styles, Preferred, Essence and Premium.
LHN - NEW! Engine, 2.5L, SIDI, DOHC, VVT
(Not available at Start of Production.)
HP5 - NEW! Hybrid Propulsion Electric, parallel, 20 kW continuous
MNH - NEW! Transmission, 6-speed automatic
(Requires (LHN) 2.5L SIDI DOHC VVT engine.)