America has pretty strong consumer protection laws and it is called "America's Best Warranty" it was likely introduced back in the late 90s to help establish a market holding. It seems as though they were in canada one year before entering the US market. Could have been a make or break moment to try and boost sales in US. thats my thoughtsI've asked three people from 3 different Hyundai dealerships why Canadians get ripped off regarding the 5 vs 10 year powertrain warranties, and not one person at any of the dealerships could give me a reason why there is such a large difference between the two countries warranties.
All I could think of is either it has something to do with different Automotive competition in the two countries, or maybe Canadians tend to keep their cars longer, vs Americans who tend to change vehicles more often, so a long warranty offered to Americans would be irrelevant, and not used.