The lifespan of your transmission directly correlates with how well you maintain the system. With proper transmission maintenance, the system can last 300,000 miles, sometimes even more. Routine transmission fluid changes, inspections, and band adjustments can save you thousands of dollars in premature transmission failure down the road.
However, if routine maintenance is not kept up with, your transmission system might start to have problems at 100,000 miles, or even sooner. If the transmission fluid is too dirty and worn down, it can’t sufficiently provide lubrication and protect the transmission system. This will force your transmission to work harder to do its job properly. Over time, this excess stress can cause extensive damage and even dangerous driving scenarios.