I've not driven a 306 HDi, but I filled up my XUD this morning and the last tank got me 618 miles = 50.5mpg brim to brim. I'm doing 55ish miles each way on mostly single lane A roads.
Had a Corsa C CDTi before, and while it would do 63mpg I much prefer how the 6 handles.
Had a Corsa C CDTi before, and while it would do 63mpg I much prefer how the 6 handles.