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mine is stock VR it use to use a full tank (68L) in about 600-650kms, now im lucky to get 400km out of it, i still drive it the same way (never foot to floor, never over 3000rpm), and it is mostly highway kms that i do
I'm only getting 400km with mixed driving which is about 20% down on a years or so ago. I figure it's the oxygen sensors as they are original (210,000km). The car has heaps of power and runs like a Swiss watch so I'm not too worried....the truth probably is I'm too tight to spend the $$$.