2008 BMW 3-Series Convertible (328i, 335i)

Introduced in 2007 with no major changes for 2008, the 3-Series convertible is BMW's first model with a retractable hardtop. It is a perfect car for two-person backroads vacation adventures whenever the weather permits. Built on the same chassis and with the same engine choices as the 3-Series coupe, it gives up just a little weight and luggage room in return for the fun of top-down motoring in an all-season automobile.

The only variation between the 328i and 335i models is in the power plant. The 328i uses BMW's normally aspirated 3-liter inline six, offering 230 horsepower at 6500 rpm and 200 foot-pounds of torque at 2750 rpm. Power is transmitted to the rear wheels through a standard six-speed manual transmission; a six-speed automatic with rapid-action Steptronic gear selection is optional.

The 335i uses BMW's new 3-liter inline six-cylinder with twin turbochargers, high-precision fuel injection, and all-aluminum crankcase. Producing an enviable 300 horsepower and comparable 300 pound-feet of torque, the 335i is capable of zero to 60 in a very sporting 5.5. seconds and cruising at 75 mph at half its red-line limit.

The folding hardtop adds about five hundred pounds to the car compared to the 3-Series coupe, but according to the manufacturer's figures, this has no impact on fuel efficiency. The 328 gets 20 city and 29 highway mpg, while the 335 is rated at 21 city and 30 highway

There's also no sacrifice to the superb handling for which BMW is recognized. The car is solid on the track at speeds well in excess of highway limits, and yet is confident in tight cornering, due to a near-even front to rear weight balance

The interior offers the same understated functional elegance for which BMW has become known. The front seats are exceptionally comfortable and supportive on corners, while the rear seats are adequate for two adults for short distances.

The folding top mechanism takes up some trunk space, and the folded top even more, providing just about enough trunk space for two roll-aboard suitcases. However, the rear seat backs neatly fold down to form a functional luggage shelf, so a week's vacation in the car can be handled with ease. Fortunately, the hardtop erects in just a few seconds, so all you have to do is remember to close it when you park the car in order to keep your luggage safe.

ABS, stability control and traction control are all standard. Driver and passenger are protected by front, side, and knee airbags. Belt latch tensioners and belt force limiters are activated by sensor-controlled electronics based on type and severity of collision.