The first few letters on the gear selector are pretty self explanatory, with "P" meaning "Park," "R" meaning "Reverse," "N" ...

An automatic transmission is any transmission that doesn’t require the driver to shift gears. There are more types of automatic transmissions than ever before, including conventional torque ...

Low Or Contaminated Automatic Transmission Fluid One of the simplest reasons that your shifter may be stuck in park — or any other gear — is a lack of transmission fluid or contaminated fluid.

In our tests, we've found that in some cars a manual transmission can improve gas mileage by a significant 2 to 5 mpg, compared with an automatic, and can cut a car's price by $800 to $1,200.