Marumoto wants to expand the carmaker's offerings to bolster its brand appeal and widen the range of sticker prices its vehicles can command.
The goal is to keep Mazda's current entry-level price but extend the range upward with other offerings and variants reaching higher.
A slew of powertrains will flesh out the plan.
"This will allow us to give more choice to customers," Marumoto said. "We will keep the current entry price while broadening the price coverage."
Marumoto didn't give a concrete timeline for the arrival of the new products, but the Mazda boss spoke of them as part of a new midterm strategy running from 2020 to 2025.
One of the upcoming inline sixes, the first in Mazda's history, will use Mazda's new gasoline-powered Skyactiv-X spark-controlled compression ignition system. The other will be an inline six-cylinder diesel.
Also on tap is a new 48-volt mild-hybrid setup and a plug-in hybrid.
All of the new powerplants will be deployed on a new "large architecture" that will also accommodate a longitudinal drivetrain layout that works with the company's all-wheel-drive system.
Under the plan, Mazda will introduce two product architectures, instead of relying on one.