Toyota Prius+ or something other than family car

Hello, I have registered here now, after I have only read diligently so far and found answers to my questions. Now I need your help in buying the family car. We have a son who is 1.5 years old. A second child should follow in about 2 years. Our budget is €16.000. We have among the whole family vans the Toyota Prius+ in the closer selection. We like the following characteristics especially: 1. He is a Toyota and somi t very reliable 2. He has a hybrid engine 3. The three fully-fledged seats in the 2nd row of seats 4. He offers a lot of space in the 1st and 2nd row of seats 5. The additional 2 “emergency seats” in the 3rd row of seats. We calculated which routes we drive safely every year. The result: In total we drive approx. 7,800km per year, of which approx. 3,500km of motorway. On the motorway we usually drive between 140-160km/h (mainly in Austria). fits also in about the kilometers driven with our current car, bought 7 years ago with approx. 50,000km, now it has 120,000km. Our questions about the car: 1. What is the fuel consumption on the motorway? 2. Does our driving profile pay for the extra charge to a hybrid? 3. How big is the trunk or the space available compared to the competition? (S-Max, Zafira Tourer) 4. Once a year we drive to Croatia to the sea for two weeks 5. How valuable is a Toyota Prius? Do you recommend us a Prius+ in our case? Especially this would be in our budget: https://www.willhaben.at/…/?… Or rather: 1. S-Max in our budget (BJ 2012-2013, Km approx. 120,000 ca. €15.500 – 16.500) 2. Zafira Tourer in our budget (BJ 2014-2015, Km approx. 70.000 ca. €14.500-16,000) We would buy the car in Austria. Except for the Prius+, we could buy it in Germany, because we would not have to pay NOVA (standard consumption tax Austria). al for your advice.