Car- and truck-makers from Volkswagen to Nissan and Ford have embraced the narrative that reducing carbon emissions in line with the Paris Agreement should be a key tenet of their business agenda.

Are they doing enough? Research shows their goals are still a far cry from what is needed, but the jury is out on whether automakers alone are responsible for the shortfall.

While some say carmakers should plan to make their fleets carbon-neutral whatever the circumstances, companies argue that their ability to transition to electric vehicles is dependent on conditions outside their direct control.