The BMW 1-series first appeared in 2004 built on the E87 chassis (E88 in convertible), which was a scaled down version of the E90 3-series chassis. The 1-series could best be described as similar to the previous generation 3-series because it kept the signature rear-wheel-drive fun of the 3-series without the ever increasing weight and bloat that seems inevitable in the auto industry. This particular car has not only the coveted single turbo N55 (it kept the same power as the twin-turbo N54 but its reportedly less troublesome) but also a 6-speed manual gearbox to boot. If you are looking for a late model open air car with a small set of back seats, you could do a lot worse. Find this 2011 BMW 135i Convertible offered for $15,988 in San Francisco, CA via craigslist.