This is shown with a range of fuel economy numbers for other cars in the same class. (bestride.com)
These, which date to the 1970s, specify that automakers can use the same fuel economy numbers for similar - size vehicles equipped with the same engines and transmissions. (en.wikipedia.org)
On gasoline, the 5.4 liter engine turns in fuel economy numbers of 14 miles per gallon in the city and 19 miles per gallon in highway cruising. (autobytel.com)