The new 2011 Infiniti M sedan isn’t due to go on sale until March 18 but the all-important pricing details for the entire range has been released today. The new M comes onto the market with greatly enhanced style, performance, luxury, and technology, and for early-bird customers Infiniti is also offering a special lease offer.

For regular buyers, the 2011 Infiniti M will start at $46,250 for the rear-wheel drive M37, while the all-wheel drive M37x will set you back $48,400. These prices are just $450 more the 2010 M35 and M35x, despite adding a brand-new 330 horsepower 3.7-liter V-6 engine that’s both more powerful and more fuel-efficient than the 3.5-liter unit it replaces.

The base models also come with Infiniti’s new Drive Mode selector with four different driving modes (Eco, Standard, Sport and Snow), a rearview monitor and an enhanced Intelligent Key with memory functions for the audio, navigation and climate control settings.

Upgrade to the V-8 powered M56 model and you’re looking at a $57,550 sticker for the rear-wheel drive model and $60,050 for the all-wheel drive M56x. Although this represents a significant hike in price over the previous M45 and M45x, the new pair features a much more powerful 420 horsepower 5.6-liter V-8 engine and a ton of additional equipment.

A $3,350 Premium Package adds advanced technology features such as an 8-inch touchcreen monitor controlling a 9.3 GB hard drive music jukebox and satellite navigation system, a 10-speaker premium audio system, Bluetooth connectivity, climate controlled front seats and a heated steering wheel.

Available technologies include a blind spot warning, the new Forest Air climate control system and an active sound reduction system.