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2011-2013

2011 Model Redesign Year
Quick, quiet, and roomy, the 2011 redesign also performed well. A not-so-impressive rear-drive hybrid version was also introduced. The optional Technology Package adds a variety of safety aids. These include lane keep assist, which can also prevent changing lanes into an unseen car. The active cruise control function has autonomous braking, as well as a forward-collision warning system. Model year 2014 brought a name change to Q70.
Styling was facelifted for 2015, which also marked the introduction of a long-wheelbase Q70L model.
2013 Infiniti M
Retail Price
$5,775 - $9,350
EPA MPG
21 mpg
Reliability Verdict
NA 
Owner Satisfaction
NA 
2012 Infiniti M
Retail Price
$4,900 - $7,775
EPA MPG
21 mpg
Reliability Verdict
/ 100
Owner Satisfaction
NA 
2011 Infiniti M
Retail Price
$6,050 - $6,600
EPA MPG
21 mpg
Reliability Verdict
NA 
Owner Satisfaction
NA 

2006-2010

2006 Model Redesign Year
The 2006 redesign of Infiniti's largest four-door car transformed it into a capable luxury/sports sedan with a comfortable interior, a choice of V6 or V8 power, and optional all-wheel drive. Ride and handling are good. The M series Infinitis are exceptionally capable, whether cruising on the highway, or hustling along twisty country roads. Further, their interiors are plush and well constructed. This version of the Infiniti was also one of the first cars to offer a lane-departure warning system.
2010 Infiniti M
Retail Price
$5,600 - $6,025
EPA MPG
21 mpg
Reliability Verdict
NA 
Owner Satisfaction
NA 
2009 Infiniti M
Retail Price
$5,000 - $5,525
EPA MPG
21 mpg
Reliability Verdict
NA 
Owner Satisfaction
NA 
2008 Infiniti M
Retail Price
$4,375 - $5,050
EPA MPG
21 mpg
Reliability Verdict
NA 
Owner Satisfaction
NA 
2007 Infiniti M
Retail Price
$3,650 - $5,475
EPA MPG
21 mpg
Reliability Verdict
NA 
Owner Satisfaction
NA 
2006 Infiniti M
Retail Price
$4,550 - $5,375
EPA MPG
20 mpg
Reliability Verdict
NA 
Owner Satisfaction
NA 

2003-2005

2003 Model Redesign Year
The rear-wheel-drive Infiniti M sedans occupied a price-and-size gap between the G35 and the large, now-discontinued Q45. Ranked among our top sedans, the original M45 was a conservatively styled package with a gutsy V8 engine, but a cramped interior.
2005 Infiniti M
Retail Price
NA
EPA MPG
NA
Reliability Verdict
NA 
Owner Satisfaction
NA 
2004 Infiniti M
Retail Price
$4,750
EPA MPG
NA
Reliability Verdict
NA 
Owner Satisfaction
NA 
2003 Infiniti M
Retail Price
$3,975
EPA MPG
NA
Reliability Verdict
NA 
Owner Satisfaction
NA 
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Auto Test Center

Precision testing comes standard at our 327-acre auto test center.

TESTING LIKE NOBODY ELSE

50+

tests are conducted on every car we buy.

PERFORMANCE TESTING

6

miles of track for testing acceleration, ride, handling, braking, and advanced driver assist systems.

TIRE TESTING

400

tires tested a year for all-weather grip and rolling resistance.