Buying advice second car woman with children

Hello, I urgently need your help. Briefly to the current situation: My husband drives a 3 year old A6 Avant and I currently have a Skoda Octavia Limosine BJ 2009. We bought the car at the time and it only has 97,000 kilometers on it, but since it is a 1.8 TSI the car swallows more oil every year and therefore we want to repel it because it is increasingly causing problems. I drive only about 10,000km a year and want a practical, reliable car in everyday life with children. the A6 we had a Polo as a second car, so I know that this car size with 2 children, prams and co. is too small for me. Spontaneously we drop the following cars a Golf, Golf Variant, Touran, Skoda Rapid, Skoda Octavia Kombi. With regard to the budget we think so of 15,000-20.000€. Which car could you recommend me ? Does it make more sense in your opinion to buy a used (max 4 years and 50,000km) or rather a new EU Reimport car? Have you seen the Golf VII Facelift you get new already from 15,000€, the variant also from16,500€. However, our Octavia also made problems after the 4 years warranty 🙁 look forward to your opinions Flapi