While Volkswagen says it has the capability to convert vehicles to gas power Woolcock said: 'We remain dedicated to diesel technology. Diesel is better on every possible count that we can see.' Many fleets return about 50mpg from a 90bhp TDI Passat and emissions from Volkswagen's stable of diesel engines all meet environmental targets set well into the next millennium.
Woolcock said: 'I am amazed about the arguments raging. The less fuel used means less emissions and that equates to diesel.' Next year Volkswagen will launch unit injector diesel engines - the manufacturer's answer to new common rail diesel engines. They will be quieter, more powerful and more fuel-efficient.