....
I've often put in over 50 litres. It's listed as 55 capacity IIRC.
Correct.

Also, even when the display says I've got 0 miles left (after a countdown with the fuel pump symbol) I've had another 20 miles.
You might want to try a little experiment. Let us say you have been caning your car for the last half hour or so, giving it some serious beans - and you notice the fuel light come on at say 25 miles remaining - when that happens, then change your driving style to that of a granny (Driving Miss Daisy

). What you should actually find is that the miles remaining will actually start to increase, and you may actually be able to get 40, 50 or even 60 miles - when previously the miles remaining said 25. This is because the trip computer constantly 'recalcualtes' the miles left based on your current driving style.
I was forced to do this a few years ago in my last S4. I was in south France at Montpellier late on a Sunday night, my fuel warning light had been on for a little while, so I searched the SatNav for 24h fuel stations. I tried about 6 or 7 - all feckin closed.

After getting a little irritated, my DIS said sommat like 5 miles remaining. Eventually spoke to a local, who basically said I had no chance to get any fuel

- so I was forced to try my luck. My apartment was about 45 miles away,

with the vast majority on the A9 Autoroute. Trundled off, using NO throttle pedal, got into 6th gear, doing 20mph. :embarassed: As I crawled along, the miles remaining started to rise, and at one stage got as high as 35 miles remaining. It ran dry about 2 miles before the appartment (I think I had done about 42/43 miles like this), luckily, I was now off the Autoroute.
Not something I've wanted to do too often but just trying to make it to a Shell station.
Ahh, yes, the automotive version of 'Russian Roulette' - done that myself way too many times. One day I
will run dry and look a complete tool! :embarassed:
