Infiniti's "swoopy anger" design language has made it to the M line, and InsideLine got some seat time in the V8-powered, rear-wheel drive, M56 and the six-cylinder, all-wheel-drive M37x.

Actual terms vary by lender. Base shown (base trim). What is the MPG of the 2013 INFINITI M56? The 2013 INFINITI M56 offers up to 16 MPG in city driving and 24 MPG on the highway for a combined ...

88% of drivers recommend this car What is the MPG of the 2011 INFINITI M56? The 2011 INFINITI M56 offers up to 16 MPG in city driving and 25 MPG on the highway for a combined rating of 19 MPG.

Prices shown for the used 2012 INFINITI M56 Sedan 4D with NaN miles are what people paid to buy this vehicle or what people received when trading in this vehicle at a dealer. Edit options.

Prices shown for the used 2012 INFINITI M56 Sedan 4D x AWD with NaN miles are what people paid to buy this vehicle or what people received when trading in this vehicle at a dealer. Edit options.