My car is supposed to have a fuel tank capacity of 45 litres. The gauge shows" full"," half full", "quarter full" and the red section. I believe the gauge is calibrated incorrectly because it always takes quite a lot less to brim the tank than the gauge would suggest. For example, when it was showing a quarter full, eleven litres on the gauge, I could only get twenty seven litres in to brim the tank so there must have been eighteen litres left. This is a nuisance when I am on a journey as it means I refuel more often than I need to. I always refuel when the gauge goes into the red but I actually have a lot of safe miles left still. The reserve must actually hold a lot of fuel, eleven litres which is a big percentage on a 45 litre tank. Has anyone else experienced this with a 2007 Corsa or is it peculiar to mine? I have never had this problem with any other car I have owned. Thanks in advance.