Hi, we have a 2012 jazz 1.4 EX CVT.
Live in Essex and running around we get about 40 - 45 mpg, its on the open road that it's great, we go from home (near southend on Sea) to Croydon Surrey 80m round trip a lot , via A127, M25 etc. and we get a minimum of 55 mpg. I drive to the legal limits and do not put my foot down for no reason. I must add that I'm a Advanced Motorist and a retired personal driver to a Family for a long time.
My dearest won't see this, I hope, when she uses the car the mpg drops to about 35mpg as she drives it in Sport mode and she has racing colours on her shopping bags.