A funny thing happened.......

[sfh3l]

This doesn't worry me too much, but seemed a bt strange and I thought I'd ask you guys if you knew what the cause might be.

I stopped for a fill up today and as I was driving off, the MPG meter on the dash of my CSL went from (a highly commendable methinks) 27.4 to '0.0 mpg' before my very eyes, and stayed there with no reaction to the throttle. This seems very strange, as in over 300,000 E46 miles, I have never seen zero - even if you reset te meter to '--.- mpg' it then reads directly from the throttle usgae till there is enought o work out the average historic, so even if you reset while tramping the throttle you may get a very low number (particularly in the CSL!), but never zero.......

I've now reset it and it is behaving as I would expect, but I wonder if anyone has any clues as to the sudden change of heart with no input from me?