A while back, Isuzu announced that a new diesel engine called the Maxforce, will power the 2025 D-Max and mu-X. When it was first teased, Isuzu didn’t provide much information, leaving out the power and torque figures.
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Thankfully, we won’t have to wait any longer. Just last week, Isuzu officially unveiled the new 2.2-liter diesel engine in Thailand, with plans to roll it out across other regions soon. The new 2.2-liter engine, officially named the RZ4F-TC, boasts a displacement of 2,164 cc and a compression ratio of 15.9:1. Equipped with an advanced electronic variable geometry turbo (E-VGS), it delivers an impressive 160 hp at 3,600 rpm and generates 400 Nm of torque between 1,600 and 2,600 rpm. Also new is the addition of an eight-speed automatic transmission while the six-speed manual transmission is retained for other variants in the lineup.
The 2.2-liter Ddi MaxForce engine introduces several innovations for enhanced performance. Just like the RZ4E before it with its graphite coating, the RZ4F-TC’s pistons feature an ultra-low friction coating, while the high-swirl piston head design optimizes combustion efficiency. Additional upgrades include higher-pressure fuel injectors, a new turbocharger with a larger inlet and improved turbine blades, an electronic wastegate, and an upgraded engine lubrication system.
With all these upgrades combined, Isuzu says the new 2.2-liter diesel mill sees a 10 percent improvement in fuel consumption plus Co2 emissions of only 165 grams per km.
