The 2011 Ford Mustang has become the first-ever EPA-tested car with a 300hp-plus engine to achieve a fuel economy rating of over 30mpg.

Ford has announced that the 2011 Mustang V6 has achieved an official EPA fuel economy rating of 31 mpg on the highway and 19 mpg in the city. It thus becomes the first 300hp (224kW) production car in the history of this testing system to achieve over 30mpg.

"The Mustang engineering team aimed high and, through hard work, achieved fuel economy numbers that elevate Mustang into a class by itself," said Derrick Kuzak, Ford group vice president, Global Product Development. "At no other time in Mustang's history - for that matter, in automotive history - have we been able to talk about 305 horsepower and 31 miles per gallon. The Mustang truly is a no-compromises sports car."

Powered by a lightweight all-aluminium 3.7-litre V6 engine, the history-maker has a 6-speed automatic transmission and will go on sale this coming spring. Its manual-transmission sibling achieved similarly high figures of 29 mpg on the highway and 19 mpg in the city.

Gallery: 2011 Mustang Certified With First V6 to Achieve Over 30 mpg