The 2015 Bentley Continental GTC is available as a 2-door, 4-seat convertible. Starting at $230,300, the 2015 Bentley Continental GTC Base is powered by a 6.0L , 0 -cylinder engine mated to an automatic transmission that returns an EPA estimated 12-mpg in the city and 20-mpg on the highway. The top of the line 2015BentleyContinental GTCV8 S , priced at $ 226,000 , is powered by a 4.0L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated