Also available is SiriusXM Satellite Radio (SiriusXM subscription required, sold separately) and Bluetooth® Hands-free Phone System."Nowhere is the new Sentra's 'class-above' style more evident than in the interior. You notice it the minute you sit in the roomy, comfortable seats and when you touch the high quality materials. And when driving you notice the extra attention paid to isolating noise, vibration and harshness from entering the cabin," said Castignetti. "And that's before you even get into the various advanced technology features that you usually don't expect in a compact sedan segment vehicle." NissanConnect(SM) with Navigation and Other Clever Technology Like the new Altima, the 2013 Sentra offers a major step forward in technology that helps owners stay connected. An all-new version of the Nissan Navigation system is available. NissanConnect(SM) with Navigation includes a Hands-Free Text Messaging Assistant that reads incoming text messages and allows drivers to reply without taking their hands off of the steering wheel. The system also offers Pandora® radio capability, Streaming Audio via Bluetooth® and a large 5.8-inch touch-screen display. The Navigation System includes NavTraffic and NavWeather functions (SiriusXM subscription required, sold separately), along with POIs powered by Google™ and Google™ Send-to-Car functions. The Navigation's map views now features warnings for curves and speed limit information. Other available technology ranges from the RearView Monitor and Nissan Intelligent Key® with illuminated push-button ignition switch to the Tire Pressure Monitoring System (TPMS) with Easy Fill Tire Alert feature. If air is being added or removed from a tire, the system signals the user when the recommended tire pressure has been reached by sounding the horn. New 1.8-liter Engine and Advanced CVT As expected from a ground-up redesign, the new Sentra features an all-new engine and CVT transmission. Now displacing 1.8-liters, Sentra's advanced DOHC 4-cylinder engine offers a longer stroke than typical engines in its class, resulting in improved combustion speed and efficiency. The engine is equipped with a twin Continuously Variable Timing Control (CVTC) system which modulates both the intake and exhaust valve opening time (similar to that used on the flagship Nissan Maxima).