The BMW i8 is one of the most exciting ... Since the 13B is a small engine, Volk didn’t need to modify any part of the hybrid ...

Instead of a V8, the i8 was equipped with a plug-in hybrid powertrain that combined a 1.5-liter turbocharged three-cylinder engine with a single electric motor. What the heck was BMW doing?

Own a BMW i8 but want yours to stand out from the crowd ... but given the way the three-cylinder engine and the electric motors are so seamlessly integrated it’s proving remarkably tricky.