TodaySeptember 26, 2021

2013 Mazda CX-5 compression ratio

Engineering the Mazda CX-5

Dave Coleman is the Vehicle Development Engineer at Mazda’s research & development. Coleman took time to talk to Lou Ann Hammond, CEO, www.drivingthenation.com about the 2013 Mazda CX-5. Watch the video as we go around Laguna Seca’s Mazda raceway, out on the Monterey streets and stop to view the sunset on the Monterey peninsula.

It’s all about compression ratio, horsepower, and torque.

From the Mazda CX-5 press release:

“Compression ratios that have been seen only in race cars before”

Developers of the SKYACTIV-G engine were aiming for a lightweight design that produced more from less.  At 13:1, SKYACTIV-G features the world’s highest compression ratio for a mass-produced car.  Coupled with an all-new 4-2-1 exhaust system as well as redesigned pistons and other components, challenges associated with high compression (such as knocking and operation on 87-octane fuel) were resolved.  As a result, SKYACTIV-G is 10 percent lighter, delivers more torque, improves fuel economy and lowers emissions when compared to the MZR 2.0-liter gasoline engine.

Coleman explains how Mazda is able to accomplish this.

What should one look at when they are buying a car?

It’s not compression ratio, horsepower, and torque

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Lou Ann Hammond

Lou Ann Hammond is the CEO of Carlist and Driving the Nation. She is the co-host of Real Wheels Washington Post carchat every Friday morning and is the Automotive, energy correspondent for The John Batchelor Show and a Contributor to Automotive Electronics magazine headquartered in Korea. Hammond is a founding member of the Women's World Car of the Year #WWCOTY, and board member of the Women in Automotive.