Vehicles produce CO2 when they use fuel. The amount of CO2 produced is directly linked to how much fuel it consumes. Excess levels of CO2 can be harmful to humans and the environment.

Renault-Nissan – with a tiny bit of help from Russian partner Avotvaz – sold 8.03 million cars in 2011. The record year outdid 2010 sales by 10 percent, with Nissan's sales growing 14% and ...

The Renault Megane RS has long been an evo favourite. From the tamest Cup model to the stripped out Trophy R, this French fast hatch has always been at or near the head of the class. Even in the ...

The engine is the familiar turbocharged 1.8-litre four-cylinder petrol, bespoke to the RS within the Megane range ... also still features Renault’s clever hydraulic bump stops.