Priced from £18,945, the Mondeo is fitted with a 1.6-litre direct injection turbo petrol EcoBoost engine is the first Ford Mondeo to boast the technology.
The engine is matched to a six-speed manual transmission and is capable of a top speed of 134mph and a 0-62mph sprint time of 9.3 seconds, just 0.1 second slower than the 2.0-litre diesel unit.
Delivering 160PS, the engine improves fuel economy by 15 per cent over the larger 2.0-litre petrol engine despite a 15PS boost in power.
Fuel consumption in the five-door model comes in at 41.5mpg on the combined cycle and CO2 emissions are 158g/km – putting it in VED band G (£150 per year).
Both the Ford Mondeo saloon and estate will be available with the new EcoBoost engine.
The engine, which is built at the Bridgend Plant in Wales, is also offered with the new Ford C-Max MPV. It will also be made available on the new Ford S-Max and Galaxy this year.
Kevin Griffin, Ford of Britain fleet director, said: “Ford’s newest Mondeo has an exterior look and standard of interior well suited to the executive car park. We’ve added powertrains which support the lower carbon economy we now live in.
"The efficient 1.6 EcoBoost in Mondeo is a sporty alternative for petrol advocates who switched to diesel in order to pay less tax.”
The full range or engine choices will be released closer to the February 2011 launch of the new Ford Mondeo, but a 115g/km diesel engine with stop-start technology and low rolling resistance tyres will be offered.