Comparison Economy Exhaust Shelby 
Clean Fleet Report
DECEMBER 23, 2021
High-powered Mustang GT, Mach1 and Shelby GT500 versions are well-known, with the latter model pumping-out 760 pin-you-back-in-your-seat horsepower. This fuel economy is encouraging, but it will take a wide open road with little traffic and lots of patience to equal it. Shelby GT500 $74,095. mpg, exceeding the EPA figure.
Green Car Congress
APRIL 29, 2009
V6 engine (the Duratec D35 EcoBoost) delivers up to 12% better fuel economy and 15% lower emissions with comparable torque and power as a 5.4L Achieve fuel-air mixing homogeneity equivalent to its naturally-aspirated (NA) counterpart at part-load conditions to ensure fuel economy targets. port fuel injected (PFI) V8 engine.
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