Not anymore, at least in milder “extreme cold”. We live in northern New Hampshire, and never have an issue with our 328d wagon parked outside in -25F. It has a

Not anymore, at least in milder “extreme cold”. We live in northern New Hampshire, and never have an issue with our 328d wagon parked outside in -25F. It has a heater for the fuel line, and they add anti-gelling agents to diesel in winter.