It seems that more people buy fuel 'by the £20' rather than counting in the litres. It makes far better budgetary sense, but every month, that £20 gets less fuel. Most drivers have, in their heads, a rough idea of how many car journeys £20 worth of fuel will get them, but I've seen a few on the roadside that have been caught out. 'I put in £20's worth, it's always been enough to get me home before' is going to be heard a lot more often by the Roadside Assistance companies.

I must admit to being one of the '£20 worth' people, I'm a natural blonde so I've no idea how far it will get me, but I do know that if my petrol gauge is showing only the one bar of fuel, it's time to hie me to the cheapest garage!

LTS