DAIMLER-Benz has unveiled one of the most impressive diesel engines in motoring history. The new V8 offers ultra-low emissions, increased economy, and the ability to outperform most petrol engines.

Using direct injection with four valves per cylinder, the new engine will debut in 'a few years', said a spokesman for the company. 'We are clearly committed to diesel technology - and it would be wrong for governments to legislate against it. As you can see at this show, many of the world's best engineers are demonstrating their faith in diesel and its significant role in improving economy and minimising environmental damage.'

Common rail direct injection diesel engines also appear in the new C220 turbodiesel and the A170 - due for launch next year. But it was not just diesel technology in the Frankfurt limelight - Mercedes-Benz also exhibited Necar 3 - based on the A-class - which uses fuel cell technology. The impact of the development will be huge, according to Jurgen Hubbert, board of management member at the company.

'The starting gun for the race to develop the first marketable, mass-production vehicle powered by a fuel cell has already been fired,' he said. 'We aim to be the first manufacturer to bring such a vehicle to market.'