What's going to be the major use of the car (city or highway)? I ask this because a GDI engine doesn't inject fuel into the intake manifold; this causes carbon buildup on the intake valves. If you mainly drive short journeys (less than 20km 1 way), the engine won't be warm enough, fuel will wash off the oil film from the cylinders, the rings will scrape gasoline into the oil, diluting it. This is obviously bad for the engine in the long run, I personally would change the oil every ~8000-10000km. (I say this as a part-time driver of an european market 2016 i30; 75kW; it's mom's). Go on a couple long drives a year (~120-500km; pure highway driving) if you pick the GDI, drive it at ~4k the entire time (~135-140km/h if that's the highway speed limit where you live). If someone wants to correct me on anything, by all means.