2013 Infiniti M Preview

Jeff Youngs | Jul 01, 2013
  • Gas and hybrid powertrains
  • Rear- or all-wheel drive (RWD or AWD)
  • EPA-estimated to achieve up to 32 mpg on the highway
  • 5-passenger seating
  • Up to 14.9 cubic feet of cargo space
  • New telematics system


Infiniti's flagship sedan returns for 2013 with few changes, among which are a new performance package, standard auto-dimming rearview mirrors, and an available telematics system.

The 2013 Infiniti M is available in M37, AWD M37x, M35h, M56, and AWD M56x trim levels. For 2014, Infiniti is renaming all of its models; the M will become the Q70.

Exterior Features

Though their interior features differ significantly, each of the 2013 Infiniti M models share the same exterior details, including 18-inch alloy wheels, automatic HID headlights, fog lights, LED taillights, power tilt/slide moonroof, and rain-sensing wipers. In addition, all trim levels are equipped with heated power-folding and auto-dimming outside mirrors with reverse tilt-down functionality, electronic trunk closer, and dual exhaust tips. The M56 and M56x offer buyers just a bit extra in the form of rear park-assist sensors.

Interior Features

Serving as the lineup's entry-level model, the 2013 Infiniti M37 is delivered well equipped with standard push-button start, dual-zone climate control, leather upholstery, genuine wood trim, heated power front seats with 10-way adjustment for the driver and passenger, noise-canceling technology, leather-wrapped power tilt-and-telescoping steering wheel, and a central control dial connected to a 7-inch display monitor. Other standard features include a 6-speaker sound system with a USB port and satellite radio service, Bluetooth connectivity, and an auto-dimming rearview mirror.

The same content is standard on the M37x and M35h, but the M56 and M56x also boast heated and cooled front seats, heated steering wheel, 10-speaker premium audio package, navigation system with an 8-inch touch screen and 3D graphics, voice-recognition capability, and real-time traffic and weather information. These top-of-the-line trim levels are further differentiated by the new Infiniti Connections telematics system, offering emergency response, stolen-vehicle tracking, concierge services, and more.

Optional Features

Infiniti offers several options for the 2013 M sedan, one of which is a Premium package that upgrades M37, M37x, and M35h models with many of the M56's additional standard features, such as the touch-screen navigation system, telematics, and a heated steering wheel.

The options list also includes Sport and Sport Touring packages comprised of features such as 20-inch alloy wheels, sport-tuned suspension and brakes, thickly bolstered front seats, revised exterior styling, premium interior trim, and a 16-speaker surround-sound system. That audio upgrade is included in an available Deluxe Touring package, too, as are the premium materials, upgraded front bucket seats, and a rear power sunshade.

With the exception of the M35h hybrid, each of the Infiniti M variants can be loaded up with a new-for-2013 Performance Tire and Wheel package that features 20-inch alloy wheels and more capable sport brakes.

Under the Hood

All M37 models regardless of drive type are equipped with a 3.7-liter V-6 engine that delivers 330 horsepower and 270 lb.-ft. of torque, all of which is managed by a 7-speed automatic transmission with downshift rev matching, hill-start assist, and manual, sport, and eco modes. The 2013 Infiniti M56 and M56x sedans feature a direct-injection, 5.6-liter V-8 engine that produces 420 horsepower and 417 lb.-ft. of torque, which, again, is directed to the pavement via the 7-speed automatic transmission.

Infiniti also offers the M35h, a RWD hybrid model equipped with a 3.5-liter V-6 engine mated with a 50-kW electric motor, lithium-ion battery, and a regenerative braking system. Net output measures 360 horsepower, 258 lb.-ft. of torque for the gasoline engine, and 199 lb.-ft. of torque for the electric motor. The M35h uses a version of the 7-speed automatic transmission that lacks the downshift rev-matching feature.

Fuel Economy

EPA fuel-economy estimates for the 2013 Infiniti M are:

  • M35h: 27/32/29 mpg (city/highway/combined)
  • M37: 18/26/21 mpg
  • M37x: 17/24/20 mpg
  • M56: 16/24/19 mpg
  • M56x: 16/23/18 mpg


The 2013 Infiniti M's standard safety features include 6 air bags, traction control, rearview camera, front active head restraints, 4-wheel anti-lock ventilated disc brakes, electronic brake-force distribution, and brake assist. The M35h, which is virtually silent when operating in electric mode, adds an audible alert to warn pedestrians of the car's approach.

In government crash tests, the 2013 Infiniti M received an overall rating of 5 (out of 5) stars from the National Highway Traffic Safety Administration (NHTSA). In tests conducted by the Insurance Institute for Highway Safety (IIHS), the M received a "Good" rating--the Institute's highest--for moderate frontal-offset crash protection; the M also received a "Top Safety Pick" designation from the Institute.


All 2013 Infiniti M models can be fitted with an optional Technology package that bundles intelligent cruise control, lane-departure warning and prevention systems, blind-spot monitoring and intervention, adaptive and auto-leveling HID headlights, forward-collision alert, and an eco gas pedal that presses back against the driver's foot under hard acceleration (more gradual application of the throttle improves efficiency).

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