An ultra-efficient 1.6-litre turbo diesel engine is revealed by Honda. The engine is the first of a new generation of power plants that will first appear in the Honda Civic. It is said that the 118bhp 1.6-litre engine is the lightest in its class, and will have sub-100g/km CO2 emissions, along with class-leading performance and economy.Alongside the 'Earth Dreams' engine, Honda will also display a prototype European version of its CR-V replacement. The new, more aggressive-looking car will succeed the current car in the autumn.The car maker's NSX Concept will also be at the Geneva show, where it will make its European debut. It will also mark the first time that it gets NSX badging . It is expected to go on sale by 2015.