Detroit’s Auto Show saw Chrysler pull the covers of three new concept cars, each featuring a different way of reducing fuel consumption.

The Chrysler ecoVoyager is a four-door, four-passenger vehicle with front wheels driven by a 268bhp electric motor.

Power comes from a lithium-ion battery pack that can propel the car to 60mph in less than eight seconds and for up to 40 miles on electric power alone.

The car also features a small hydrogen fuel cell to extend the range to more than 300 miles.

The two-seater Jeep Renegade is designed for off road driving, and is powered by an electric motor on each axle.

It too uses a lithium-ion battery with a 40 miles range, but also features a 115bhp, 1.5-litre Bluetec diesel engine to extend the range to 400 miles.

The Renegade is capable of 110mpg.

The Dodge ZEO – or Zero Emissions Operation – is an all-electric vehicle powered by a battery with a range of at least 250 miles.

The 268bhp electric motor will take the car to 60mph in less than six seconds.

Simon Elliott, managing director of Chrysler UK, said: “Providing exceptional fuel economy and reducing emissions is part of Chrysler’s environmental commitment.

“These three new designs show that we are moving all of our brands forward with a green agenda. 

"I imagine that it won’t be too long before we see this type of technology being used on and off our streets.”