I don't think I've ever seen Lexus IS pulling a caravan!!??
I tow a Caravan with the Lexus and it is fine as a tow car. It has a lot of power at low end therefore have never had a problem moving our caravan. I tow an 2006 Stearling Eccels Jewel, what do you have??
I have a 2007 Coachman VIP 460/2 with a MPTL of 1420kg, with my current BM330d I dont even notice it on the back and get 34mpg towing. Is the Lex as impressive?