David, I'm gonna be in the same boat in 2 or 3 years time.... Do I keep the Prius and dump the wife's Aygo, do I keep the Aygo and dump the Prius .... decisions, decisions.... I've been having a similar conversation with my parents (one retired the other retires next year), currently they have a Mitsubishi Colt and a Mitsubishi ASX. They keep thinking of going down to one car but they like to drive to France on holidays so need a bigger car, but big cars can be expensive for everyday use. Best idea is to keep the larger car and then pick up a second hand Aygo/C1/107 as a general runabout as they are so cheap to run and keep. Although I think 'retirement cars' are going to get massive competition from the new Vauxhalls in the future with their 100k miles warranty. If you just use a car for shooping etc it could take a very long time to do those miles (with my current car usage it would last 33 years for me).