Vauxhall's all-new 2.0-litre CDTi diesel engine has made its debut at the 2014 Paris Motor Show.

The new unit will be revealed in the Insignia and Zafria Tourer as Vauxhall continues the roll out of its new powertrain portfolio. The new engine replaces the current 2.0 CDTi (163PS) engine at the top of Vauxhall's diesel range.

This highly efficient, Euro 6-compliant engine delivers almost five per cent more power and 14 per cent more torque while reducing fuel consumption and CO2emissions.

The engine is also quiet and smooth as a result of Vauxhall's unwavering focus on ‘sound engineering' measures to minimise NVH (noise, vibration, harshness). Engine noise has been reduced by five decibels.

"This sophisticated engine makes a perfect partner for our top models including Insignia and Zafira Tourer," said Stuart Harris, Vauxhall's Head of Carline Brand. "Its high power density, refinement and frugality place it among the very best diesels in its class."

The company has also fitted its new 1.6-litre 'whisper diesel' engine into the Mokka. Part of a new family of Vauxhall all-aluminium diesel engines, the Euro 6 compliant 136PS unit reaches 85PS per litre, delivering 320Nm of torque.

Performance isn't compromised with the Mokka 1.6-litre CDTi accelerating from 0-62mph in 10.5 seconds and making the transition from 50-75mph in fifth gear in just 10.3 seconds. Maximum speed is 118mph.

The Whisper Diesel is also extremely economical and benefits from Vauxhall's all-new six-speed manual transmission and Start/Stop as standard.  Fuel economy is 58.9mpg combined and emissions are low at 109g/km CO2.