Infiniti's new variable compression ratio petrol engine will debut in the new QX50 SUV.
It is expected to offer the performance of a petrol engine with economy of a diesel.
The turbocharged 2.0-litre engine has targeted efficiency improvements of 35% over the 3.7-litre V6 motor in the old QX50.
Infiniti claims best-in-class cabin space for the BMW X3/Mercedes-Benz GLC/Audi Q5 rival.
The QX50 is due in late 2019.