The cost to repair a transmission depends on the issue and may range from just about $100 to over $8,000, as of 2015. Leaks in the transmission may only be a couple of hundred dollars to repair, but a brand new transmission may cost several thousand.
A transmission leak repair may only be $150 to $200 depending on the make and model of the vehicle. A transmission flush is also more affordable and is about $100 on average. Another transmission repair, a solenoid replacement, may range from $300 to $850 depending on how many solenoids need replaced. The most expensive transmission repair is to rebuild or replace the part. To rebuild the transmission, the range is $2,800 to $3,800 and to replace it from $4,000 to $8,000.