17/26 City/Highway MPG 17/26 City/Highway MPG Reviews: * If you think smaller and lighter cars tend to be the most fun, we think you?ll like the 2009 BMW 1 Series Convertible. It features a quiet, well insulated top and excellent top-down air-flow management, freeing it from the vices that commonly plague convertibles. Source: KBB.com Recent Arrival! 2009 BMW 1 Series 135i https://www.kbb.com/kbbreport/638es Awards: * 2009 KBB.com Brand Image Awards