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 ...

Actual terms vary by lender. Base shown (base trim). What is the MPG of the 2012 INFINITI M56? The 2012 INFINITI M56 offers up to 16 MPG in city driving and 24 MPG on the highway for a combined ...

Its new styling looks at once traditional yet flamboyant, and some will prefer the straightforward interior design to the screen-based systems in other luxury vehicles. Several new safety-tech ...

The M strikes an unusual mix of luxury, economy, and sportiness that's unmatched in this class, with strong powertrains, nimble handling and a quiet, refined interior. Its new styling looks at once ...