I just loved how nissan e-power works. Most of the PHEV, hybrid manufacturers focuses on ICE engine while the electric motor as an additional power booster or for short distance, speed limited purpose only. Nissan power-e focuses on 100% electric motor while the ICE acts as battery charger/generator. So no wonder small displacement on the ICE. For more details, refer to https://www.nissan-global.com/EN/INNOVATION...RCHIVE/E_POWER/