A raft of new technologies promise to clean up cities' pollution problems - but can they offer a viable alternative to diesel?
Diesel emissions-rigging scandal continues to deepen as Audi admits using 'defeat devices' in 2.1 million cars
Two weeks after being named to the prestigious Dow Jones Sustainability Indices, the auto giant provides a master class in what's wrong with sustainable business.
Department for Transport to compare laboratory tests to 'real world driving emissions'
Martin Winterkorn says he is shocked by events of past few days and hopes to provide auto giant with fresh start by resigning
Environmental Audit Committee chair Huw Irranca-Davies says diesel drivers need assurances they have not been deceived by automakers
Volkswagen faces $18bn in fines after US regulators found thousands of cars giving false data on emissions
Manufacturers latest to sign up to campaign promoting the benefits of ultra-low emission vehicles
First deliveries of £25,845 electric hatchback scheduled for June this year
e-Golf to debut at next month's Frankfurt motor-show along with e-up! mini-car as German manufacturer extends e-mobility push