The Honda Jazz has a big problem with the fuel gauge. I believe it is a resul of the fuel tank being under the front seats, being very shallow and running longitudinally across the car. Therefore for all the computed electronics Honda put into the cars system, the fuel readings can never be accurate - they don't put a float style measuring instrument of sufficient sensitivity in.
This annoys me because, with a 42 litre tank, the larges fuel fill I can achieve is 30.22 litres. Okay, you might say, but when you travel out West in NSW it can be a long way between fuel stops and one becomes quite paranoid. You cannot trust the cars instruments.
Honda refuse (through their dealer) to do anything about this. They argue that the same applies for all cars. However I beg to differ. My experience with Mitsubishi models, Toyota models, BMW models and even the Honda Accord is that I have NEVER encountered such inaccuracies. Also, many of my cars have had various trip computers and in no circumstances have they proven to be inaccurate or unreliable.
Honda have made a gross error in design and they refuse to front up on this. So tough luck everybody. My next car to replace e this Jazz with be either Toyota or Audi. I never go back if the experience is bad and the manufacturer will not front up to their responsibilities.
