Honda will reveal an ultra-efficient 1.6-litre turbodiesel engine at the Geneva motor show next month.
As part of the car maker's 'Earth Dreams' technology programme, the engine is the first of a new generation of powerplants that will first appear in the Honda Civic.
Honda says 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 the 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 appeared at last month's Detroit motor show with Acura livery. It is expected to go on sale by 2015.
Two new Jazz derivatives will be on display, too: the Jazz Si with sporty suspension and tweaked styling and the Jazz 1.2 Idle Stop, which cuts CO2 by 3g/km compared with the standard 1.2 car.