Yeah I was on the motorway constantly a coupe of years ago and regularly attained circa 40mpg, brim to brim. Had 509 miles once, all motorway in one hit.
Average tank now around 32 to 36mpg with more town journeys and cold starts.
What speed did you sit at roughly?
Went with Anth to pick up a new car for him recently and drove to hull, I was only getting around 300 miles to the tank motorway driving, but was sat at a reasonable speed following him on the way back.....
My car sits in 6th gear at 70mph for 90% of its use. It takes a while I think of running it under those conditions to get increasingly better mpg. Depends what your car spends most of its life doing I think...mines had full service recently and is maintained pretty well so that's where I get my economy from....I'm sure the lightened fly helps also as less energy needed to spin it up etc
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''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?