Which small car up to 6,000 euros ideally with automatic?

My wife and I have two cars: a Renault Mode 1.6 (built in 2006, approx. 250,000 km) and a Mitsubishi Colt 1.6 (built in 2005, approx. 290,000 km). One of them is to be sold and another car is to be bought. Ideally, the new car costs up to 6,000 euros, has an automatic transmission, does not swallow so much and is reliable. Its daily journey would be about 10 km of motorway and 7 km of road. dt. What’s possible? Are there any recommended cars for the price at all or do I have to do without the automatic? We find e.g. nice: Fiat 500, Audi A1, VW EOS, but are open for everything else. Mainly no smart and no Toyota Aygo. And which car would you give up for it? Both are in a proper condition, but the mode makes noises from the engine compartment since a short time, like a rattle possibly the timing belt has to be replaced? But has not one year TÜV. The Colt has noc h a month Tüv, has no power steering, definitely needs new brakes in the back. Which of the two cars would you rather sell? Thanks a lot!