9.4 litres per 100 km ...8% of 9.4 is 0.752 .. so on that basis you'd expect after run in etc 8.6 litres per 100 km... i.e. an 8% improvement, our calculators here are right hand drive but still add up ok I think !! LOL .

As per Australian website for 3.0d ...
City : 11.3L/100km
Highway: 7.2L/100km
Combined: 8.7L/100km