The 2003 Hyundai Sonata is available as a 4-door, 5-seat sedan. Starting at $15,499, the 2003 Hyundai Sonata Base (M5) is powered by a 2.4L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 22-mpg in the city and 30-mpg on the highway. The top of the line 2003HyundaiSonataLX (A4) , priced at $ 19,374 , is powered by a 2.7L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway.