Why a 10-Speed Transmission Actually Makes Sense – Road & Track

On a face, a 10-speed delivery seems like a stupid idea. It’s only too many gears. Six, seven, or 8 gears seem like some-more than adequate to get a pursuit done, so because would we mystify things by adding more. There’s indeed sound proof behind a 10-speed, however, as Jason Fenske of Engineering Explained details in his newest video.

To speak about 10-speed gearboxes, we contingency initial speak about continuously non-static transmissions, or CVTs, a automobile enthusiast’s slightest favorite transmission. CVTs don’t have bound rigging ratios—instead, they can constantly change their ratio to keep an engine during a ideal handling speed during all times. That means cars with CVTs tend to worker during a consistent RPM when accelerating, that enthusiasts don’t like, though that’s good for potency and performance.

A CVT will always be some-more fit than any other form of gearbox, though they wouldn’t feel utterly right in a opening or oppulance car. So, to try to mix a best of both worlds, some automakers have combined some-more gears to their automatics. In cars like a Lexus LC 500—which Fenske uses as an example—Chevrolet Camaro ZL1, and Ford F-150 Raptor, ten-speed gearboxes get flattering tighten to relating a opening and potency of a CVT, while preserving a normal feel. It’s not utterly a have-your-cake-and-eat-it-too solution, though it’s as tighten as we’ll ever get.

And if you’re still skeptical, cruise this—Fenske averaged 29 MPG on a 400-mile highway outing in a LC 500, that is damn considerable for a automobile with a 471-hp 5.0-liter V8.

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