21.2 litres per hundred is the correct figure. NOw I've only done around town driving and no highway and I reckon maybe 15% of the time I have given it a squirt, but still!
I would have expected about 16 litres per hundred. I think something must be wrong, either O2 sensor or bad tune (too rich?) anyway to roughly tell or should I just book it in?
77,000 km's on the clock BTW so perhaps an O2?