Some manufacturers like Hyundai offer a longer factory warranty in the US, but they do so voluntarily. The federally required minimum warranty is 3 years / 36,000 miles.
Typically the "powertrain" warranty covers the engine, transmission, and associated parts. "Bumper to bumper" covers everything else, EXCEPT wear items. For example: no warranty covers tire wear, filters, or even clutch replacements usually. The clutch can be construed to be a wear item, even if it was incorrectly manufacturered.