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Sorting through modern gearbox technology

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Justin Pritchard
Transmissions with no gears?
From 8 gears to none, here's an abbreviation to get familiar with- CVT. It stands for Continually Variable Transmission, and they're starting to
The Dodge Caliber uses a CVT transmission (Photo: Justin Pritchard, Auto123.com)
become more popular in a big way- especially with Nissan. Benefits include smoothness and economy, as the transmission never shifts gears.

Richard Mazzucca, a Nissan sales rep Explains. "Nissan's Xtronic Continuously Variable Transmission is available in 5 different vehicles in 2007. (Versa, Sentra, Altima, Maxima and Murano). Nissan has been building CVT transmission since 1992 and has improved and perfected the technology. Our CVT provides a smooth continuous flow of power and acceleration while keeping the engine at its optimum rev range for any particular power requirement. The result is extremely smooth operation and superior fuel economy. The Xtronic CVT features 25% fewer parts and achieves 6 to 8 percent better fuel economy than a conventional 4-speed automatic transmission."

The options now really are limitless. From paddles to levers to 8 gears to none, be sure to check out some advanced transmission technologies the next time you go looking for a new vehicle.

Here is a handy list of the most common abbreviations explained:

DSG: "Direct Shift Gearbox"- Audi and Volkswagens F1 inspired automated manual transmission with paddle shifters

SMG: "Sequential Manual Gearbox" - BMW's version of the F1 paddle shift gearbox for road cars. Their M designated vehicles even afford driver selectable shift harshness and speed for maximum control and performance

CVT: "Continually Variable Transmission" used by some Ford, Chrysler and Nissan products; this transmission never shifts gear, favoring a smooth, seamless power delivery and increased mileage.
Justin Pritchard
Justin Pritchard
Automotive expert
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