Vauxhall's Zafira Tourer MPV will be the first model to feature the new generation 1.6 CDTi Start/Stop diesel engine, the first engine announced in a new family of four cylinder diesel units.

With its world premiere at the Geneva Motor Show next month, this powertrain is Vauxhall's cleanest diesel engine to date and is equipped with BlueInjection selective catalytic reduction (SCR) technology that meets strict Euro 6 emissions regulations.

The 1.6 CDTi unit delivers 136PS and 320Nm of torque while also offering fuel efficiency of 68.9mpg combined and 109g/km CO2. This allows the Zafira Tourer to offer a combination of high torque, performance (with 0-60mph in 10.4 seconds) and fuel economy.

Available in the summer and featuring closed-loop combustion control and an aluminum block, this new four-cylinder 1.6-litre diesel engine was developed entirely within GM by a global team of powertrain engineers.

Further expanding the Zafira Tourer's powertrain offer, the range now comprises five diesels, including a new high performance 2.0 BiTurbo CDTi engine with 195PS, and two petrol engines.

"Vauxhall continues to develop its award-winning model range with new and exciting technology," said Duncan Aldred, Vauxhall's chairman and managing director. "This new powertrain is Vauxhall's cleanest diesel engine in its illustrious 110 year history."