The all-new 2018 Hero Passion XPro gets powered by a 109 cc single-cylinder, air-cooled engine. The new motor was first introduced on the Splendor iSmart. Hero claims that the new motor is 12 per cent more efficient in terms of power output. The new Passion Xpro now produces 9.3 bhp of max power at 7500 rpm and 9 Nm of peak torque at 5500 rpm. The 2018 Passion XPro also gets the company's i3S start-stop system that is said to improve the fuel economy that the bike offers.