How Long Will A Failing Alternator Last. Gunning says an alternator typically lasts about seven years or about 100000 to 150000 miles adds Waits. The price of a new alternator can run from 500 to 1000.

In general the duration of your car depends on the capacity and condition of the car battery. How long does a car battery last without an alternator. A bad alternator can leave your Dodge Ram without power and unable to move.
According to many sources mechanics a typical alternators life expectancy can last you somewhere between 5 to 8 years.
Once your alternator has stopped working your vehicle starts to take the energy it needs from the vehicles battery. Most reconditioned alternators come with at least a one-year warranty while some come with a warranty for up to three years. If you drive through rough conditions such as dirt sand rain and snow frequently this can cause your alternator to fail sooner. Without this essential component your car will only function for up to two hours and as little as five minutes.

