BMW's fourth generation 3-series convertible returns for 2007 available in two trims, 328i and 335i. The 328i is powered by a 230-hp 3.0L inline six-cylinder engine, while the 335i receives a 3.0L twin-turbocharged engine producing 300 horsepower and 300 lb-ft of torque. This years' convertible receives BMW's first ever fully power retractable hardtop, boasting a 22 second push button retracting time. Other available luxury features include full leather seating, a Logic 7 sound system, and run-flat tires. Safety features on the 3-Series include the BMW Maintenance Program, roadside assistance, and the optional BMW Assist with Bluetooth.