Powerful mechanical transmission case controlled speed can be changed quickly, and will not decrease developed power, assuring low breakdown rates.

速度以强力机械式变速箱控制，能快速变化速度，不减低出力，故障率极低。

youdao

What about the fact that, in addition to a six-speed automatic, this wagon can be had with a six-speed manual transmission, a device that's quickly becoming a drivers-only shibboleth?

WSJ: 2011 Cadillac CTS-V Sport Wagon: Insane, Unnecessary, Awesome | Rumble Seat by Dan Neil