The 2011 Hyundai Equus is available as a 4-door, 5-seat sedan. Starting at $58,000, the 2011 Hyundai Equus Signature is powered by a 4.6L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 24-mpg on the highway. The top of the line 2011HyundaiEquusUltimate , priced at $ 64,500 , is powered by a 4.6L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 24-mpg on the highway.