The 3 Series is a delight to drive, with agile handling and a firm yet supple and controlled ride. Fit and finish is excellent, but the cabin is snug. Both the 328i and 335i are powered by smooth 3.0-liter, six-cylinder engines. Our tested 328i is very sporty and has excellent steering feel. It returned very good fuel economy for this class, 23 mpg overall, even with the six-speed automatic. However, it requires premium fuel. The optional all-wheel drive takes its toll on acceleration and fuel economy. Some controls are complex. Crash-test results are impressive, but the convertible didn't do as well in the IIHS side-impact test. A diesel engine arrives for 2009.