Only small changes were made to the 2012 G37X to keep it at the top of its game for best upscale sports sedan. The excellent 3.7Liter V6 paired to a 7 speed automatic transmission now delivers a very acceptable 25 highway MPG, not an easy feat with 328HP on tap. Numbers aside, this clean G-series sedan also delivers immense comfort and high-tech toys like FACTORY NAVIGATION, dual zone climate control, lane guidance, bluetooth streaming audio, XM Satellite Radio, 8-way power front seats, tilt-telescoping steering wheel, Front side impact airbags, roof mounted side impact curtain airbags, Traction control, Tire pressure monitoring system and much more!