I used to tow in the UK with a Chrysler Voyager ( American Made, 7 x Seater SUV ) it did pretty well.
Fully ladden, all seats occupied + a dog, 2 x Roof Boxes and towing my massive Trailer Tent.
Even came back from one holiday on Three cylinders cus of a HT Lead fault and yes we went up some pretty steep hills, just needed to get a bit of a run at them that's all, lol.