The newest member of the N-Series family offers the features drivers expect from an Isuzu truck. With its new 3.0-liter turbocharged diesel engine, the 12,000-lb. GVWR NPR ECO-MAX gets up to 20% better fuel economy than its predecessor.

Isuzu 4JJ1-TC 3.0-liter diesel engine

Standard on the 2011 NPR ECO-MAX is the newest engine in the Isuzu family—the 4JJ1-TC.

Its high-pressure common-rail fuel injection system wrings the most energy out of every drop of fuel, and its intercooled, variable-geometry turbocharger provides excellent response over the engine’s entire RPM range. Together, these features help the 4JJ1-TC produce 150 horsepower and 282 lbs.-ft. of torque.

Despite its spirited performance, this engine is a miser. In fact, the NPR ECO-MAX achieves up to 20% better fuel economy than the previous 12,000-lb. GVWR NPR.

Like every Isuzu powerplant, the 4JJ1-TC is a true commercial vehicle engine. Each component has been crafted to reduce maintenance and increase durability.

So it’s no surprise that the 4JJ1-TC can be driven up to 10,000 miles between oil changes and has a class-leading B10 durability rating of 310,000 miles—meaning that 90% of 4JJ1-TC engines will reach that mileage before requiring an overhaul.