What is the average battery life of a 2000 Toyota Echo?

As far as I know, there is no national database of battery life statistics, but just from personal experience, having owned two Toyota echos (2000 and 2001) the original battery lasted 9 years in both. If it starts taking longer to start your car, especially after it has been sitting in cold weather, its a sign that the battery is near the end of its life.

You can buy a good quality replacement battery for as little as $65 with more cold crank amps than the original OEM battery (most have a 3-4 year warranty).