Family car budget 6.000 Euro

Hello Together, as the title shows, my girlfriend and I are looking for a new car, as we expect young people in May. We are currently driving a Toyota Yaris BJ 2004, which we would like to take into account in advance. It is important for us that the trunk is large, reliable and low i consumption and in the insurance. Basically we are not a frequent driver, but around the 6,000/year and drive mostly only in the inner city, so that a petrol can be considered. Today we have u ns already looked at the Ford Focus tournament 1.6 https://www.autoscout24.de/…/…a1dc-085e-400b-a2d2-2042fbdfa3ea?… The car has made a solid impression, only the rear right bumper has some scratches that, according to the seller, are not due to an accident, but general “use traces” by the previous owner (an older gentleman). We would be able to buy the car for 5,000 euros, incl. 900 euros for our current car (is for a Toyota Yaris with BJ. 2004 900 Euro a good price?) To this would the timing belt be renewed. – good offer? From the same dealer I noticed just the Skoda Octavia https://www.autoscout24.de/…/…641b-df2f-458-bdfd-8d519613dfc7?… or this Skoda Octavia https://www.autoscout24.de/…/…d136-d477-4cb0-aab9-617e939e067?… Since I am unfortunately no expert in the area, I would like to know your feedback on the above cars. Are 900 Euro for a Toyota Yaris with BJ 2004 appropriate ? You can also call me alternative cars, room Lübeck, as we are open for further car brands. Thank you.