Fuel economy is estimated to be as high as 30 mpg on the highway for the 2007 BMW 328i while the 335i is rated at only 19 mpg in the city; while piloting the 335i, we averaged 17.5 mpg with the manual and about 21 mpg with the six-speed automatic. Premium fuel is required. BMW boasts a 0-60 mph range of 5.3 seconds for a manual-equipped 335i to seven seconds for a 328xi wearing the automatic gearbox. Top speed peaks at 155 mph.