Customers who purchase a Mack TerraPro equipped with a Cummins Westport ISL-G natural gas engine can receive a $32,000 tax credit, according to the US Internal Revenue Service.
IRS informed Mack Trucks Inc that the model year 2011 TerraPro series with the ISL-G is certified for the Qualified Alternative Fuel Motor Vehicle Credit and that purchasers may claim the credit on their 2010 Federal Business Income Tax filing.
Natural gas in either compressed (CNG) or liquid (LNG) form burns cleanly, has abundant domestic supplies and is comparable to diesel in terms of cost over the life of the vehicle. The ISL-G-equipped TerraPro model was specifically engineered and built to operate on natural gas, and the engine is installed on the production line at the Mack Macungie Assembly Operations plant. This means each truck comes with a full factory warranty and a higher level of performance and reliability in refuse applications. The 9-liter ISL-G is rated at 320 hp, can use CNG or LNG, and has a three-way catalytic converter to meet EPA2010 emissions standards.