GDI engines - yes or no? - Maintenance/Repairs - Car Talk ...
Jul 11, 2016· Maintenance/Repairs. Jman136 July 11, 2016, 5:24pm #1. So, here's the deal. I purchased a 2015 Kia Sportage with the GDI engine (non-turbo). I did some research and primarily found that as long as you use Top Tier fuel (which I always do) this will eliminate the carbon build-up. I also had KIA run their fuel additive through my system to ...