The transmission is the engine’s most complex component making it also the most expensive to repair. In fact, the average cost of transmission replacement can cost anywhere between $1,800 and $3,500, and that doesn’t even include the labor. If transmission repair is possible for your vehicle instead, that is a more affordable option to explore. There are many factors that go into the cost including make and model, extent of damage and manual vs automatic to name a few. It is important to take your vehicle in for inspection at the first signs of transmission problems.