small car/city flicker/saving

Hello, I’m looking as 1 vehicle a cost-effective small car as a city flicker. 90% city 10% highway. Budget 5000 to 6500 MAX. Car should take me from A to B, and for normal purchases for 2 people. Important the insurance should be as cheap as possible. Fuel consumption should also be as little as possible. how many km a year I can not say yet. I guess times 20 to 30 km/day maximum. Have already looked at the following cars: -VW POLO -Suzuki Swift -Opel Corsa -A1 -Mazda 2 -R enault Clio -Seat Ibiza/leon Not yet a test drive My girlfriend is for POLO (the new model).Can someone give me some more par tips? Thanks already