Hi Bart,
Thanks for your comment
I keep a fuel log in Excel, just got the car about a month ago so it is easier to keep up.
Tyre pressure is already at 2.5 bar, and most of the time I don't exceed 100 km/h.
A grill block is not that handy for these engines I think. There is no upper grille and these type of engines tend to overheat quick. Maybe it is an option for the winter
The car is not OBDII equiped and instrumentation is kinda expensive for my income but I wil keep it in mind.
In the meantime I will try the hypermiling tips and make sure the car is in good shape.
Greetings, Sjoegerd