"That makes the 335i the first turbocharged gasoline-powered BMW sold in the United States. The engine makes a vocal argument to being the best turbo powerplant this side of a $130,000 Porsche. Free-spinning and seamless, it evinces none of the power lag or spiky peaks you expect from turbochargers, achieving peak torque at a low 1,400 r.p.m.
The result is a 3 Series that feels roughly as quick, but less high-strung, than the current-generation M3 (rated at 333 horsepower). For the new convertible, BMW cites a snappy 5.5-second run from 0 to 60 m.p.h. when equipped with the terrific six-speed manual transmission — only two-tenths of a second behind the 335i coupe. If you don’t want to pump a clutch pedal, the $1,275 six-speed Steptronic is among the fastest and smoothest automatics around; don’t forget to throw in $100 for paddle shifters." more.