The carmaker says the lightweight supermini concept is intended to demonstrate its knowhow in the fields of design and technology and features around 100 technological features that will be introduced gradually to the model range over the next 10 to 15 years, including the hybrid powertrain – Renault's first "Z.E. Hybrid".

The concept achieves its headline economy figures in three ways: minimising weight, refining aerodynamics and using the Z.E. Hybrid technology.

Aerodynamic efficiency has been achieved through the vehicle architecture which includes a narrower rear track and a lower roofline without detracting from cabin space, along with carefully designed rear body panels and the use of active systems for even greater aerodynamic efficiency, such as an active spoiler, aerodynamic flaps and active wheels and bespoke tyres designed for aerodynamics by Michelin. As a result drag coefficient (CdA) is reduced by 30%.

Weight saving was also a key focus and total weight savings amount to around 400kg thanks to the use of aluminium/carbon solutions and a lightweight multi-material body shell. There’s also a magnesium roof weighing just 4.5kg and an ultra light chassis amongst other innovations.

The concept also achieves its ultra-low fuel consumption thanks to its 100%-Renault hybrid powertrain, which is covered by more than 30 patents. This technology consists in combining a petrol internal combustion engine (ICE) with a compact electric motor. The powertrain uses a 75PS three-cylinder 999cc petrol engine with peak torque of 95Nm and a 70HP electric motor, mated to a clutch-less transmission based on a compact and economical three-speed gearbox. In electric mode, the driver can cover trips of up to 60km at speeds of up to 120km/h.

‘The solutions showcased by EOLAB are much more economical and enable hybrid technology to be used for smaller cars and on a much bigger scale. Our objective is to produce a car with two power sources for the price of one,’ said Jean-Pierre Fouquet, Z.E. Hybrid innovation project leader.