Showroom quality, Original and one of a kind, Only 52,000 miles, Fully loaded, No food, children or pets ever in vehicle, The base and LX models were powered by Ford's 3 point 8 L Essex OHV V6. Producing 140 horsepower 100 kW at 3800 rpm and 215 lbft 292 Nm of torque at 2400 rpm, many felt the engine was somewhat underpowered for a car that weighed over 3,500 pounds 1,600 kg in base trim, heavier when equipped with available options. This engine was mated to Ford's AOD 4 speed automatic transmission regardless of trim level from the 1989 to 1993 model years. Thanks in part to its low coefficient of drag, the Thunderbird was relatively fuel efficient considering its overall size and weight. The EPA gave the 1989 Thunderbird equipped with the standard V6 a fuel efficiency rating of 19 mpg US 12 L100 km; 23 mpg imp in city driving and 27 mpg US 8.7 L100 km; 32 mpg imp on the highway, though, like most cars built before 2008, this rating was retroactively reduced by the EPA to reflect newer, more realistic fuel efficiency measurements. The fuel efficiency rating was noticeably better than that of the Thunderbird equipped with higher performance engines and gave the base V6 equipped Thunderbird a significant driving range with its 19 gallon fuel tank.