MB S204 or Opel Insignia

Hi guys, I’m in front of the decision to buy a new car, but can’t decide at all, from the driving profile I sit 90% alone in the car but often have a lot of luggage, so it’s supposed to be a combo. 70% highway 20% overland 10% city 20-25,000 km a year. Optically I like Opel Insignia Facelift and S204 Mopf very well, however, the price is a difference, such an S204 is then at the same price slightly older or has more KM, which I don’t find tragic. If you have other suggestions, I am happy to be open, must have are: – Navi – Tempomat – Seat heating – Automatic – from 170 hp Also diesel or gasoline is a decision question. Budget should not be more than 25k, current vehicle is an Astra H Caravan, residual value 4-5 K. Thank you!