Usually I pay for fuel with cash and try to fill my car with an exact amount to avoid a pocket full of chage. Many garages have a button which allows you to specify how much you wish to buy, others do not.

Sometimes I am under but occasionally I go a fraction over. I notice in the UK they insist on an extra penny whilst in spain they do not - or at least they do not at my local garage

I'm sure you're in the minority, but if most go under by a penny or two, I bet they expect the change! And for everyone that overshoots, the cashier has to make up the shortfall. And she/he is probably a lot poorer than you are!

Yeah, if you run off without paying the cahsier has to make up the difference. I have noticed more and more going onto the prepay system. I asked the cashier if this was a general thing, and he said yes, because of those who run off without paying.

I would never evade payment or expect staff to subsidise. Garages here have a jar where most customers will donate loose change. Maybe it's just a local thing?

I can see it happening where there is an independent garage, ie the guy serving you is the owner, but most of them, whatever the pump clocks up, that's what the cashier has to hand in. As you say, it's easy to overshoot, a busy garage with hundreds of cars a day, the poor old cashier would be working for nothing!

So, if I fill my car up once a week with 20 or 30 euros and put an extra 2 cents on each time, at the end of the year I will be able to have a coffee for free with my "savings".

It`s the same around here, they don`t worry over a few coppers. I bet agrodiarrhea waits for his penny change too if he is under.

It depends on the price of the juice, sometimes it`s hard to stop on the €, it ticks past cos of the pump gearing.