Regardless of body style, the 2013 BMW 3 Series is an impressively well-rounded and highly desirable entry-level luxury car. For the sedan only, BMW starts things off with the 320i. It comes standard with 17-inch alloy wheels, automatic headlights, foglights, automatic wipers, cruise control, dual-zone automatic climate control, eight-way manually adjustable front seats, leatherette premium vinyl upholstery, a leather-wrapped tilt-and-telescoping steering wheel, a trip computer, Bluetooth, the iDrive electronics interface with a 6.5-inch display, and a premium sound system with a CD player, HD radio, an auxiliary audio jack and an iPod/USB audio interface. The 328i sedan adds an auto-dimming rearview mirror, eight-way power-adjustable front seats, driver memory functions and a rearview camera. The 328i coupe differs with a sport-tuned suspension and manually adjustable front seats (power-adjustable is an option), while the convertible gets a power-retractable hardtop and 10-way power front seats with memory functions. Both two-door body styles add adaptive xenon headlights and a 60/40-split-folding rear seat. Every 2013 BMW 3 Series comes standard with antilock brakes, traction and stability control, front side airbags and side curtain airbags. The convertible lacks the side curtain airbags, but the regular front-seat side airbags extend up to head level and there are also pop-up rollover hoops.