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Mazda CX-9 Crossover Boasts 32% Fuel Economy Gain
Mazda Motor Corp. says the front-wheel-drive version of its all-new 2016 CX-9 midsize crossover has a best-in-class fuel economy rating of 25 mpg, based on U.S.
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Mazda Motor Corp. says the front-wheel-drive version of its all-new 2016 CX-9 midsize crossover has a best-in-class fuel economy rating of 25 mpg, based on U.S. Environmental Protection Agency estimates.
The 25 mpg combined-driving rating, which includes 22 mpg in the city and 28 mpg on the highway, is a 32% increase over the outgoing CX-9. The all-wheel-drive version of the CX-9 is rated at 21 mpg city, 27 mpg highway and 23 mpg combined.
Mazda attributes the gains to the CX-9’s lightweight construction and new Skyactiv 2.5-liter 4-cylinder engine. The turbocharged mill, which produces 310 lb-ft of torque and 250 hp, is paired with a 6-speed automatic transmission.
Mazda says the engine is the first in the industry that can vary exhaust pulsation based on engine speed to optimize air flow and minimize turbo lag. At low speeds (below 1,620 rpm), the turbocharger gets less air to better control exhaust pulses and maximize turbine efficiency. At higher speeds, all ports open for maximum air flow.
To further improve the turbocharger’s efficiency, Mazda uses a three-port exhaust system. Exhaust from the middle cylinders flows into one port, while each outside cylinder has its own port. The design improves packaging and efficiency, according to the carmaker.
The engine also features a 10.5:1 compression ratio, which Mazda says is one of the highest in the industry for a similar-sized engine capable of running on regular gasoline.
The new CX-9 will be introduced in late spring. Pricing hasn’t been announced.
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