Hi
Don't know for sure if your Steptronic is the same as the autobox used with UK diesels, but even with that set to a particular manual ratio the revs go all over, ie, 90Kmh seems to be anywhere from about 1600 to 2300 (very approx) while still in "5".
Which I think means even if the gear ratio is locked, the torque convertor is going in & out of lock all the time.
But I would appreciate a good description of the box Kia use (please not a link to Wikipedia on "automatic gearboxes" !!!).
Whatever way - it tows easily & without trouble, apart from the worse fuel consumption than the manual.
There are a lot of doom mongers out there who will advise never to tow with an automatic - but anything with a decent size engine (like the Sedona, or my Volvo) seems fairly happy. And the Volvo is now up to 150K miles so towing can't be too disasterous to that car....
Regards
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