The ultra-efficient 1.6 CDTi 110hp engine emits just 97g/km of CO2 and consumes an average of 3.7 litres diesel per 100km (76mpg).
As a result, the Astra qualifies in tax band 'A2' (€180) for annual road tax.
"This ultra-efficient 1.6 turbo diesel engine and the Astra are a perfect match, coupling performance with top refinement and high fuel efficiency," said Dave Sheeran, Managing Director of Opel Ireland.
Also on the way for Opel is the new Vivaro van. It will feature a new design, engines and technologies inside and out.
Available from early summer, the all-new Vivaro range promises more economy and higher performance engines.
Opel says the new Vivaro will boast ultra-modern technologies and equipment that bring typical passenger car amenities and features for frequent drivers into the LCV segment.