Published at Tuesday, 14 April 2020. manual car. By Suzette Dubois.
Four-speed manual transmissions are largely outdated, with five- and six-speed transmissions taking their place as the more common options. Some performance cars may offer even more gears. However, they all work more or less the same, regardless of the number of gears.
Manual transmissions haven’t seen the rapid increase in forward gears that automatic transmissions have with the rise of eight-, nine- and 10-speed automatics, but cars like the Porsche 911 offer seven-speed manuals rather than the more common six-speed gearbox. What’s the benefit? The extra seventh gear is very tall, which means better gas mileage during highway cruising.
The transmission is connected to the engine through the clutch. The input shaft of the transmission therefore turns at the same rpm as the engine, which improves both power output and fuel economy. CVTs became common in hybrid cars because they are considerably more efficient than both manual and traditional automatic transmissions, and their popularity skyrocketed from there as automakers competed for the best possible fuel economy ratings. As of late 2016, one out of every four cars sold in the United States was equipped with a CVT.
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