The cost of a new transmission will vary, and greatly depends on the vehicle, the vehicle size, the manufacturer, and even the model and year when the vehicle was made. Generally, the average cost to replace a transmission will range from $3,000 to $7,000. Not including labor and miscellaneous parts and supplies. However, most general repairs can be accomplished for prices ranging from $1,800 to $5,000, not including labor and miscellaneous parts and supplies. Because transmissions are so costly, if you can afford it, purchase a warranty when you have the transmission repaired or replaced.
For more info, see How to Know It’s Time for a New Transmission