When equipped with the five-speed manual transmission, the 2006 Hyundai Accent weighs in at 2,366 lbs. and achieves an EPA-estimated 32 mpg in the city and 35 mpg on the highway. Swapping in the four-speed automatic brings the curb weight to 2,403 lbs. and adjusts fuel economy to 28 mpg in the city and 36 mpg on the highway.