How reliable is the New Fiat Croma? Fiat Croma vs. Nissan Qashqai / Mazda 6 etc…

Are looking for a second car, which is in any case bigger and more reliable than our small Seat Ibiza. We have seen the Fiat Croma &. (as diesel with 126hp). But have I now read horror/repair stories? A forum member was in a jar 33 times in the workshop… Except this car we still like the Mazda 6 (of which I have read that he should rust extremely quickly). We were disappointed by the Peugeot 308sw (also Diesel) (see inside billi) g out and the 3 seats in the back are narrow and uncomfortable) Or is the Nissan Qashqai (with gasoline engine 140hp) better? I drove it today and must say, I liked it quite well. Which car/brand can you recommend me? Do you think of a brand/model that I did not mention We think we will make about 15 000km /yearly with the car. Mainly city/overland. But already a longer journey from Spain (where I live) to Germany. U The big problem is that we don’t understand much about cars and therefore urgently need your help. Thank you, Ronja.