I only hit around 23mpg, with nearly all my miles being town driving
I think my thermostat is stuck open tho, as the tamp gauge normally sits just above the needle stop and only gets up to around the 70/80 mark if left ticking over for a while, i have changed the temp sensor already and it's made no difference and some times it can be hard to start once warm as if the choke is still on
When i get chance i will have to investigate