Ford is now selling a high percentage of turbo V6 engines instead of traditional V8s with its F-Series range and Chrysler has announced a raft of fuel saving technology for its Dodge Ram 1500 large pick-up.
It is now available with an ultra efficient eight-speed automatic transmission, the first time an eight-cog gearbox has been in an American pick-up.
A new 3.6-litre petrol V6, which Chrysler says is at least 20 per cent more efficient, is being introduced along with electric power steering, stop-start technology, grille shutters that close when not needed and suspension that adjusts on the run for optimum aerodynamics.