This week Benjamin drives the variable compression turbo equipped 2019 Infiniti QX50, while both Sami and Benjamin get to say the words 'compression' and 'ignition' over and over again after testing out a prototype version of Mazda's Skyactiv-X compression ignition engine. Finally, Benjamin reveals his disappointment with the 2018 Mitsubishi Outlander PHEV SUV, while Sami engages him in that eternal debate: do you say 'P-H-E-V' or 'FEV?'