I've had my car almost a month. Car says average 27.8. 364 mile until E when I filled it up yesterday.
2010 Focus SE coupe 5 speed
Pioneer 80prs/AQ2200D/BK800.4/6 SQ pro mids/4 SQ supertweets/AlphaDamp/Projector retrofit/LED tails/ Walled with 2 SQ HDC3 18s.
A lot of mods.