The announcement comes after the IRS concluded its quarterly review of the number of hybrid vehicles sold. Nissan sold 3,128 qualifying vehicles to retail dealers in the quarter ending June 30, 2007. This brings the total number of qualified hybrid vehicles sold to 5,222.

Hybrid vehicles manufactured by Toyota, Honda and Nissan are among the most researched vehicles, according to July 2007 data provided by NADA Appraisal Guides. The top three are the 2007 Toyota Prius, the 2007 Honda Civic Hybrid, and the 2007 Nissan Altima Hybrid, respectively.

The allowable credit amount for the 2007 Altima Hybrid -- Nissan's only certified hybrid vehicle -- is $2,350. Taxpayers may claim the full amount of the allowable credit up to the end of the first calendar quarter after the quarter in which the manufacturer records its sale of the 60,000th vehicle. For the second and third calendar quarters after the quarter in which the 60,000th vehicle is sold, taxpayers may claim 50 percent of the credit. For the fourth and fifth calendar quarters, taxpayers may claim 25 percent of the credit. No credit is allowed after the fifth quarter.

See also: Phase-Out Credit for Toyota and Lexus Hybrids Continues; Ford Hybrids Still Qualify