I BOUGHT MY ZAFIRA IN MARCH THIS YEAR AND HAD 21000 MLS ON THE CLOCK IT IS 01 REG. AND NOW HAS 28500 .IN THAT TIME I IT HAS USED 1.5 LITERS OF OIL IS THAT NORMAL.
I would say that this is better than most other vauxhall diesels on the road. Oil consumption can be as much as one litre per thousand miles on some models, depending on the engine code.