PARIS -- The QX Sport Inspiration crossover concept Infiniti unveiled here likely previews the 2018 replacement for the QX50.
The V-6-powered QX50 has had little updating since its 2007 debut, but last year's re-engineering resulted in a bigger back seat that has helped boost sales by more than 500 percent in 2016.
With the long-suffering QX50 selling well, Infiniti now says it has the new design template for all future crossovers and SUVs, and a new engine to go with it.
At the Paris auto show, Infiniti President Roland Krueger unveiled the Sport Inspiration concept -- revised since first appearing in April in Beijing -- and the Infiniti 2.0-liter VC-Turbo -- a variable-compression four-cylinder engine that will drive the new QX in 2018.
The engine was jointly developed by the Renault-Nissan Alliance and designed to maximize fuel economy by reserving high-compression performance until called for.
"The engine will give us the output of a V-6 in the efficiency of a four-cylinder engine," Krueger said.
The QX50 no longer will be rear-wheel drive when it is redesigned, freeing up interior space. Also, the smaller four-cylinder engine will require less engine compartment space and thus allow more room inside.