Nissan has done little except apply some mascara and lip gloss to the Sentra since it was last redesigned during the Clinton Administration. Long overdue for the update it finally gets for 2007, it appears at first glance that the long wait was worthwhile: the new Sentra is a terrific looking little sedan. Under the hood is an all-new 2.0-liter four-cylinder engine, available with a choice between a standard six-speed manual transmission or Nissan’s fuel-saving Xtronic CVT (continuously-variable transmission). Standard equipment includes a new electronic power steering system, a tire pressure monitoring system (TPMS), front active head restraints, and an advanced audio system. Optional amenities include leather-appointed seating and Nissan’s Intelligent Key keyless entry system.