CORRECTED -- Production has started on Isuzu Commercial Truck of America's line of 2015 and 2016 N-Series diesel-powered models, the company announced at the NTEA Work Truck Show in Indianapolis.

The I4HK1-TC 5.2-liter turbocharged diesel engine powering the trucks has been enhanced to provide better fuel economy and will be compliant with the latest EPA emission standards a full year before they go into effect, said Isuzu.

The new engine is available on the 2015 NPR ECO-MAX, 2016 NPR-HD, NPR-XD, NQR and NRR low-cab-forward trucks. 

Isuzu noted that vehicle weight has been reduced on the 16,000-pound GVWR NPR-XD truck to increase payload capacity across all wheelbases in both standard and crew cab configurations.

In addition to cleaner engines, these new models and the 2015 NPR ECO-MAX offer upgraded interiors and updated exterior styling. They can be optionally equipped with a driver’s suspension seat and a keyless entry system

The new models also feature the following updates:

• Improved onboard diagnostics with a new particulate-matter sensor

• A high-output, 140-amp alternator

• A new front grille available in white or chrome

• Redesigned steering wheel

• New fabric seats

• Optional lockable DEF fill cap to prevent tampering, contamination and theft of DEF fluid

“These improvements to our range of diesel-powered trucks demonstrate clearly that we are not resting on our laurels,” said Shaun Skinner, executive vice president and general manager of Isuzu Commercial. “We intend to be the leading low-cab-forward truck for the next 30 years.”

Corrected 5/6/2015 -- Previous headline implied Isuzu did not previously have a diesel N-Series product, when in fact it has sold diesel engines since coming to the U.S. in 1986.