I'd like to understand more about Kia's towing capacity rating. It seems to only be rating the engine's ability to pull (and to some undisclosed criteria), rather than an overall rating that accounts for weight differences between trim levels and associated braking effectiveness, and any body or frame or
suspension differences both across trims and across FWD vs AWD.
Every other brand has different tow ratings for different trims, and for AWD vs FWD (because they are rating the overall vehicle package, not just the engine).
Some manufacturers voluntarily rate towing capacity per the SAE J2807 standard. Kia can't possibly be testing to that standard, or different trims would have different capacity.
Also note that in the manual, pg 5-148, 5-149, it shows:
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Lambda II 3.8 GDI ATK engine:
without trailer brakes: 1650 lbs
with trailer brakes: 5000 lbs
Maximum tongue weight 351 lbs
The trailer tongue should weigh a maximum of 10% of the total loaded trailer weight, within the limits of the maximum trailer tongue load.
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So, even the 5000 with trailer brakes needs a caveat. If 351 lb tongue weight is 10% of maximum, that becomes the limiting factor and the maximum loaded trailer weight is 3510 lbs, and only with a trailer having brakes, which most single-axle and utility trailers do not have.
I'm left confused. What are the real ratings by trim level, for SAFE trailer towing across a range of driving conditions and grades?
Kia seems to be playing a game with the specifications similar to the way shop-vac manufacturers play games with "horsepower ratings."
Claims about trailer towing ratings are important not just for the safety of owners, but also for the safety of people who may be driving near a Kia owner who is towing a trailer+cargo weighing 5000 lbs.