The 2013 Hyundai Accent sedan and hatchback can be configured with a manual or an automatic transmission, with a standard or a sporty suspension, and with smaller or larger wheels. No matter which you choose, it earns 38 mpg on the highway.
With either transmission, the Accent stands at 28/37 mpg. Compared to other vehicles in its size and price class, it's competitive--not the best, but still impressive, in the wider view. The best Ford Fiesta manages is rated at 28/37 mpg without options; add on the SFE package and it nudges 40 mpg; the leader in some other respects, the Honda Fit, only manages 33 on the highway.
That leaves a pretty long driving range. Fill up the tank and the Accent could go as far as 400 miles without another stop. Wring it out, or leave in Sport, and you're sure to land at the lower end of that scale however
The manual-transmission Accent has an "eco" shift light to help train you to use less fuel, though, while the automatic has an ActiveEco button that triggers early upshifts to improve gas mileage.
NOTE: The 2012-2013 Hyundai Accent is one of a group of vehicles with restated gas-mileage numbers. Its original figures of 30/40 mpg were found to be overstated by the EPA, and have been lowered to 28/37 mpg. Owners can register with Hyundai to receive reimbursement for the gas consumed above and beyond expected levels; more details are found at HyundaiMPGInfo.com.