With direct injection on a small-displacement four-cylinder engine and lightweight bodies, the 2013 Kia Rio gets reasonably good--albeit not class-leading--fuel economy.
The 2012-2013 Kia Rio is one of a set of vehicles found to have overstated fuel-economy numbers. Kia initially submitted figures of 30/40 mpg and 33 mpg combined (34-mpg combined with the manual) to the EPA, which allows automakers to self-certify fuel economy. On a confirmation check of several vehicles, the EPA found the Rio's actual tested fuel economy to be 28/36 mpg (31 combined) with the automatic transmission or 29/37 (32 combined) with the manual transmission. The 2013 Rio Eco model was also downgraded, from an original 31/40 mpg (34 combined) to 30/36 mpg (32 combined). Owners can register with Kia to receive reimbursement for the gas consumed above and beyond expected levels; more details are found at KiaMPGInfo.com.
This year, Kia's introducing a stop/start system that shuts off the Rio's engine at longer pauses and stoplights. At first due in the 2012 model year, it's now being offered on 2013 Rios. And considering that EPA adjustment, it now adds 2 mpg to the EPA automatic-transmission city rating--at 30 mpg city, 36 highway.