Hyundai and Kia’s 10/100 powertrain warranty is direct from the factory, not from a third party - one of the few companies to do so.
It should be mentioned - to get that 10/100 warranty, you either have to buy new or certified pre-owned from a Hyundai or Kia dealership. The warranty isn’t transferable otherwise.
On the other hand, at this time of year there’s all sorts of leftover cars going cheap now that the 2016s are in dealerships. Dealers are now giving screaming deals on 2015s to make them go away.
Case in point, you can get this for less than the price of a new Cruze: https://www.vanhyundai.com/new/Hyundai/2015-Hyundai-Sonata-6f2ccd670a0a000277c4308b8a761719.htm