Tow car change

Do you mean Sportage rather than Sorento? If you mean Sorento then it, and it's kissing cousin Hyundai SantaFe, is a great tow car.

Have you searched for on line reviews? There are many available.

Sportage and the kissing cousin , Tuscon preferably.

The online reviews I've seen don't seem to give much feedback regarding towing with the 1.7 diesels. I realise that they're slightly underpowered than what the model has to offer.

For a caravan of MTPLM 1400Kg it should be fine.

Look at the ssangyong korando 1st class tow car

I would avoid the Nissan Qashqai [Cashcow]. It is a very popular car with a high number of sales, but reliability problems are high. Check out reviews on the likes of Whatcar.

 Likewise the Nissan Extrail [Entrail]. Once an excellent car it's also showing reliability issues which is a shame.

Colin

thank you  for the input, really appreciated. 

I towed with a 2013 Qashqai for a couple of years - it was the 1.6 AWD version. No issues whatsoever with the car and would get 60+ mpg on long journeys solo. It was an equally able tow car - you get a lot of bang for your bucks so to speak.