Quote Originally Posted by Millenium7 View Post
I don't go by how many litres I put in on that tank, I go by how many litres it took to refill the tank. Its usually about 60L (maybe as low as 55L) to an average of 450km. That's an optimistic 8km/L or 12.5L/100km

A hell of a long way off some of the 10km/L or higher some people are quoting.

Someone suggested theres a way to check if the O2 sensor is in need of replacing before actually replacing it?
60l/450km works out at 7.5km/l (13.3l/100km). 55l/450km works out at 8.2km/l (12.2l/100km). Not too shabby for around town in an auto.

On country trips, my TW AWD VRX can easily return 11km/l (9l/100km) or better. Around town, it's typically around 7.7-8km/l (12.5-13l/100km). FWIW, I tend to re-set the fuel metering every time I refill, so it's quite easy to keep track of the average consumption on any tankful.

Anyone with an exhaust gas analyser should be able to check the O2 sensor's performance.