Classified as a midsize luxury sedan, the 2013 Infiniti M is available in three trim levels that correspond to engine choices: M37, M35h and M56. Standard on the M37 are 18-inch alloy wheels, automatic bi-xenon headlights, foglights, power-folding heated and auto-dimming mirrors, automatic wipers, a sunroof, a power soft-closing trunk lid, keyless ignition/entry, dual-zone automatic climate control, leather upholstery, heated eight-way power front seats with power lumbar support, driver memory functions and a power tilt-and-telescoping steering column. Also standard are a rearview camera, Bluetooth and a six-speaker stereo with a CD player, auxiliary/USB/iPod inputs, an audio/visual jack and satellite radio. Standard safety features for all 2013 Infiniti M models include antilock disc brakes, stability and traction control, front side airbags, side curtain airbags, active head restraints and a rearview camera.