The most environmentally-friendly version of the Peugeot 508 saloon will be driven by Damon Hill in the RAC Future Car Challenge, where he will be competing to use the least fuel over a 60-mile journey.
The route, from Brighton to London, is designed to showcase the greenest cars in the UK today and puts models in competition to find the most eco-friendly vehicles.
The Peugeot 508 will be entered with a new 1.6-litre e-HDi engine, the most frugal in the entire saloon range.
Despite offering 112bhp of power, the car also comes with Start/Stop technology which can turn the engine off when the car is in traffic and instantly turn it back on again with the help of an ‘e-booster’.
This helps the new 508 achieve official fuel consumption of 64.2mpg but Hill will be aiming to beat this through careful driving.
The Peugeot 508 saloon, launched earlier this year, is a family saloon designed to offer low running costs (road tax falls into Band C) alongside a comfortable, practical interior.
As a result, it is one of the most efficient executive compact cars on the market and with prices starting from around £22,000 for the e-HDi model, is expected to be popular with both families and business users.
The new Peugeot 508 saloon will line up against other Peugeot cars in the challenge, including the all-electric Peugeot iOn city car and the diesel-hybrid Peugeot 3008 crossover.
Other cars taking part include the Vauxhall Ampera extended-range electric vehicle and a Range_e – the first fully-electric model from Land Rover based on the Range Rover Sport.