One problem related to fuel hoses lines/piping and fittings has been reported for the 2012 Kia Motor RIO. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Kia Motor RIO based on all problems reported for the 2012 RIO.
The fuel hose vent line leaked fuel into back seat of vehicle while fueling, taken to dealer only to be told that kia said it was impossible and I spilt gas on the seat.