The Toyota owner manual for this Yaris says no towing...yet the frame is pre-drilled for the tow hitch mount....bolted right up...also later in the owner manual it says "towing in Canada"...up to 700 lbs!
Earlier version of this car in Europe says 1000 lbs. Is gravity different in different countries? LOL...
Anyway I built the trailer to be light as possible...it think about 250~300lbs . The Bike is a bit over 400 lbs...so I'm at around 700 lbs.....car ran fine....no overheat (but today is cold day).....brakes worked fine (sometimes this is the weak point in towing)....car felt a tiny bit sluggish going up steep hills.
I probably will use this trailer maybe 4 times a year at most...shouldn't burn out the transmission or blow up the engine...!
BTW I installed the Harbor Freight front wheel chock/lock deal....works like a charm!
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That little car could pull that trailer and bike clear across the USA.
NICE BIKE by the way.