I always had an idea of how much gas it was using but never really bothered to actually crunch the numbers and find out the exact MPG or L/100km.

So last time I filled up, I reset the odometer and did 504km then filled up again. It turns out that I used almost exactly 40L of gas to travel those 504km. So if I am not mistaken, this translates to 7.9L/100KM or 29MPG.

Usually I start the car and it's only moments before I start going, I don't wait very long. I'm not sure if this is bad for the mileage. On this tank of gas, I was definitely driving too fast, accelerating too fast etc but not the whole time. There was a significant portion of that driving which was between 90-110kph and quite a lot of city driving.

When filling up before having done the calculations, I felt the mileage was not very good. Turns out it's better than I expected given that I didn't granny it the whole time.

How about you? Real numbers of liters/gallons used versus km/miles traveled only please.