Q45 (1st Gen): Buying Advice Congratulations! You are looking at one of the finest cars ever created. However, they are not without shortcomings. Here are some major stats and facts about the 1st generation Q45. •They came stock with the VH45DE, an all-aluminum, 4.5 liter engine rated at 278 horsepower and 296 ft/lbs. of torque. […]