22-10-2012, 06:55 PM
So that's around 35mpg. Just checking, did the service inlcude an air filter? As said check leak off pipes. Check the tyre pressures. Check for a binding brake (does a wheel get hot after a long drive?). All that said the XUD is no great shakes fuel economy wise compared to a modern engine, I can't say what is good for a 306 but my 405 got 45mpg and my 406 gets 40mpg. If you drive them on boost then it's a lot lower.