Car lost power, stalled in traffic at a stoplight on a slight incline, rolled back into another vehicle. Have been having repeated problems with stalling. Have taken it to 3 dealerships, none of whom have done anything beyond oil changes. They've even refused to scan it. Kia says it should be under warranty for a new engine after KSDS update, then says it's not. We've been lucky not to have injuries so far because it's done this stalling thing multiple times in traffic.