I am sure my light used to come on about 120-130. I did 141 the other day and the light still did not come up - I am now convinced its not working properly! I tried draining the fuel today to see but I can't easily syphon the tank. Interested in other views. I will have to get the dealer to investigate at 2nd service time.
I have seen 140, motorway and easy on the a roads. I too thought there was a fault, light came on about 145 and there was about 3 litres left. That was a one off. Most times comes on between 120 to 140