From ESPN








BMW still hasn't released official fuel economy numbers for its
diesel-powered 2014 328d, but now, those mileage ratings have been
posted on the EPA's FuelEconomy.gov website. As expected, the 328d is
quite an efficient little machine, with the rear-wheel-drive sedan
good for 32 miles per gallon in the city and 45 mpg highway. That even
bests the 30/42 mpg of the smaller Volkswagen Jetta TDI.