How often should you have to top-up your engine oil between services.....? My VH Meriva Design 1.6 8v is about three years old wih 28k miles. I travel about 160 miles a week. There are no visible oil-leaks. I also use Fully-Synthetic.
I agree with Birt. Engines are supposed to use a certain amount of oil and while we often hear about cars going many thousands of miles before needing topped up I would be more worried if it wasn't using oil.
1000km per litre may seem a bit on the high side but it will be well within manufacturers tolerances.