I6 differences?

A quick note on the power bit: Mazda’s consumer website will tell you (at time of writing) that the lesser models put out 280 horsepower and 332 lb-ft of torque. That’s only if you run it on regular 87-octane fuel. You can get the higher output running it on premium-grade fuel, including on the less expensive models.

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CX-90s come in three models: Turbo, Turbo S, and PHEV (plug-in hybrid). The first two are powered by an engine that helps the CX-90 feel like the real deal: a 3.3-liter turbocharged inline-six with a 48-volt, 17-hp hybrid-assist system. A 280-hp version of the engine with 332-pound feet of torque powers the Turbo; this version runs on regular fuel. A 340-hp version of the six making 369 pound-feet of torque on premium fuel motivates the Turbo S. Both engines' internals are identical; Mazda turns up the boost on the more powerful variant by roughly 5 psi to about 19 psi and adjusts other engine parameters to take advantage of higher-octane fuel. The plug-in hybrid mates a 189-hp 2.5-liter turbo four with a 173-hp electric motor for a combined 323 horsepower and 369 pound-feet of torque, also on premium fuel.

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