When it debuted for the 2014 model year, the BMW i8 wowed us with its carbon-fiber construction, swing-up doors and its high-performance plug-in hybrid powertrain. It was BMW's showcase for maximizing performance while simultaneously minimizing environmental impact. Five model years later, BMW has rolled out an updated 2019 BMW i8 that features improved hybrid power components as well as a new convertible model called the i8 Roadster.