Hyundai Motor Finance Company provides auto financing to new car
owners who purchase automobiles manufactured by Hyundai Motors.  A
friend of mine told me that Hyundai Motor Finance Company despite the
late fee clause in the retail installment contract, did not, between
1998 and 2003, require its' customers to pay late fees for failing to
make their car payments on the scheduled payment dates.  I told him
that he had to be joking.  Are there any Hyundai owners who can
document (e.g., via an account or payent receipt) that they had been
late making a car payment to Hyundai and did not have to pay a late
fee?  On the other hand, are there any Hyundai owners who can document
that they have been late and were required to by Hyundai to pay a late
fee for failing to make a payment on the scheduled payment date?

Not really the full answer you were looking for, but I was late a few
time in 2001 to Huyndai and was not charged a late fee.  I have no
documentation but I know it to be true.