The updated Mitsubishi Outlander PHEV debuted at the Geneva motor show. The European 2019 Outlander PHEV features a new and updated generation of the vehicle's plug-in hybrid powertrain. The previous 2.0-liter inline-4 engine, operating on the conventional Otto Cycle, has been replaced by a larger one of 2.4-liter capacity specially tuned to run on the ultra-efficient Atkinson Cycle instead.