As vehicles are developed to meet the low emissions targets set around the world, it isn't just design and functionality which are being stretched: the materials that components are made from are under increasing pressure to perform. We spoke to Keith Denholm, engineering director at Grainger & Worrall (GW) to see how the industry is meeting the challenges posed by electrification, vehicle light-weighting and down-sizing. GW is a specialist in sand casting and metal technology, including metal additive manufacturing. In this interview, we learn more about the challenges of casting EV and hybrid components, such as electric drive units, where integration of several diverse systems leads to complex castings which need to withstand significant torque forces.