15 mpg on my way to work and about 14 back from work ( road tends to be empty at 10-11pm so I floor it all the way home really, occasionally have a quick traffic light GP with some colleagues from work ).
3 mile trip ( which takes 20-25 minutes when I go to work, 10 minutes on the way back), from cold, first mile is 20mph zone with lots of speedbumps, the next 2 miles is a 30mph dual carriegeway with traffic lights every 300 or 400 yards ( or more, I can count at least 10 in a quick count in my head), then a final 300 yard stretch with terrible ''1st gear'' speedbumps at my work's private terrain where I tend to floor it in between em as I'm so annoyed by them.
Very bad I know and I could easily get 20 mpg if I drove calmly but meh it's my money.