I run my in Spain the climate is pretty similar to parts of S.A .But it,s a big country.Anyway don,t have any starting probs only when cold is there a little over run on the throttle.The problem is in the law of averages.All major manufacturers have to build a car to suite a wide range of climatic and driving conditions.Therefore there will be small problems in certain areas.They will all be sorted soon it is only fine tuning.
Who is faster,on a twisty mountain road,nobody,other cars may be faster in a straight line ,but the confidence you have on the limit is fantastic it isn,t going to spit you into a ditch.Therefor you you drive quicker.Yesterday took on a M3 beat me on the straights but I past him on every roundabout.Porsche Cayenne,Alpha GTA,s,Mercs ,BMW.s,get them on a road with no straights lots of hairpins and say bye bye.Other hot hatches same story you won,t beat a Clio on the straight but wait till his brakes start to fade .