The saloon, released by Peugeot at the end of 2010 to replace the ageing Peugeot 407, took the 2011 large family car award based on appearance, driveability, ownership costs and green credentials.
Judges of the awards described the 508 as: "A great looking car, the new semi-automatic 508 is spacious and well equipped. Build quality and handling are excellent, with the best fuel economy in its class."
The impressive fuel economy figure – 62.8mpg on the combined cycle – comes courtesy of a 1.6-litre diesel engine fitted with e-HDi technology.
The e-HDi technology comprises a start/stop system, which turns off the engine when the car is stationary in traffic to save fuel, and an ‘e-booster’ to ensure the engine turns back on again instantly when needed.
Other fuel-saving technology includes regenerative braking, helping the car record high fuel economy figures and CO2 emissions of just 109g/km – enough to qualify for zero first year Vehicle Excise Duty.
On the Peugeot 508, Dr. Ben Lane, Managing Editor of Next Green Car, said: "The 2011 winners reflect the latest technologies being used by manufacturers to improve fuel economy and reduce emissions."
However, the Peugeot 508 was not the only car from the French car maker to triumph in the awards. The Peugeot iOn, a four-door, four-seat model, took to city car title despite strong competition from the likes of the Fiat 500 and Citroen C-Zero.
Awarding the Peugeot iOn with the title, the judges said: "The iOn signals the arrival of the pure electric city car. Practical, affordable, fun-to-drive, spacious enough for four, and a cinch to park."
Other winners of the awards included the Renault Scenic, Vauxhall Corsa, Vauxhall Ampera and Ford Focus.