The fully redesigned Ford Ranger one-tonne pickup truck will make its world debut at the Bangkok International Motor Show in Thailand later this month.

The Ranger is assembled in Thailand for markets other than the US alongside similar models badged as the Mazda B-series.

The US Ranger and B-series - completely different and much older models - are assembled at Ford's Twin Cities Assembly plant in St. Paul, Minnesota, for the US market.

The first generation Thai Ranger/B-series was launched in 1999 and is exported as far afield as South Africa, Australia and New Zealand.

The latest model features a 2.5 litre common rail DOHC diesel engine, delivering 143PS, and a three-litre engine delivering 156PS.

The latest engines have high pressure Bosch fuel injection systems and variable geometry turbochargers.

The 2.5L engine develops 330Nm of torque at a low 1,800 rpm yet provides claimed 22% better fuel economy than the Ranger's previous 2.5L turbo engine. The new three-litre engine produces claimed best-in-class 380Nm of torque, also at 1,800 rpm.

A dual mass flywheel is claimed to increase engine response and reduce vibration to provide smooth acceleration and responsiveness.

The turbo-diesels are mated to a new five-speed manual transmission.