Printed on the front of Pennzoil Platinum 0W20 bottle:
SPECIALLY FORMULATED FOR MODERN FUEL EFFICIENT VEHICLES, INCLUDING HYBRIDS*
Earlier this year, or it might have been late last year, a BITOG member who is knowledgeable in full synthetic oils, Caterham, he commented that Toyota Genuine Motor Oil 0W20 was developed through Exxon Mobil, especially for Toyota hybrid cars, the Prius product line.
You're not hurting your new Kia hybrid car by running Motomaster 5W20, as a matter of fact, it may be argued that it's more beneficial to use for a brand new car, oil that is chemically "dino" (minimum to no PAOs and esters), as you are doing. As long as your owner manual says it's OK, I see no problem with 5W20 at this time. The Honda 0W20 is labeled synthetic blend, for example. But yes, TGMO 0W20 is fully synthetic, and probably PP 0W20 also. They're all excellent oil products that were produced in anticipation of the coming forth of new automotive technology. Use with confidence.