Good question...
I think the tipping point is about now for me to be honest.
I do a lot of miles for work, and only get 25p per mile in return, so someone told me i need to have a 42mpg car in order to break even on a business trip
So any car that does less than 42mpg is costing me money out of my pocket to go and visit clients. What a joke.
I dont want to have the zed as a weekend car as i hardly do any weekend driving.