It will celebrate its world premiere at the Brussels Motor Show January 16-26, 2014.
Launched in 2010, the second-generation Meriva featured the clever FlexDoors system; rear-hinged rear doors (a 20% larger opening for passengers) and the FlexSpace system, which allows rear passengers a variety of different seating combinations.
Meriva gets a new grille, chrome accents that frame the front fog lamps and newly-designed headlamps with an 'eagle-eye' graphic.
For the first time, optional LED daytime running lights and LED tail lights will be available.
Opel's all-new 1.6 CDTi diesel engine will also be available in the Meriva.
The Euro-6 compliant engine is initially available in the power variant 136hp that delivers 320Nm of maximum torque.
It consumes just 4.4 litres per 100 kilometres and emits 116gm/km of CO2.
This equates to a 10 per cent improvement in economy and emissions over the 1.7 CDTi, which the new unit replaces.
Diesel engine performance from the new Meriva has also been improved in the 1.6 CDTi model, which accelerates from 0-100km in 9.1 seconds, nearly a second quicker than the 1.7 CDTi, thanks to its additional 6hp and 20Nm of torque.
Meanwhile, the popular 1.3CDTi will also be available.
The Meriva's engine range will include the 1.4i petrol engine with 100hp which is now fully Euro-6 compliant.
The new Meriva will feature Opel's new generation, state-of-the-art IntelliLink infotainment system enabling seamless smartphone integration into the vehicle.
The large, high-definition, seven-inch colour monitor offers a new interface with IntelliLink graphics that enhance readability and make operation easy.
The system features Bluetooth hand-free phone connectivity and audio streaming, and additional connectivity via USB.
A separate pricing and trim announcement will be made when the new Meriva goes on sale. It is expected in Ireland in the second quarter of 2014.