I use mine as a daily and haven't seen less than 32mpg and if being careful can easily get 37mpg. It is always ran on V-Power Nitro and serviced properly.
The silver one on the other hand returned 26-28mpg doing the same journey at the same times but was always ran on 95 ron fuel and hasn't been serviced properly judging by the lack of power and terrible mpg.
Bargain little cars for a daily or a track car