My 2013 IS250 has 44950 mile's and I was told it needed rear brakes replaced ?

Hello Jeanetter, When it comes to brakes, the driver is always the determining factor in how long they last. Either your driving habits, or the previous owners driving habits are most likely the cause of excessive wear. However, it isn't much faster than normal. Make sure you're not being ripped off, take it to one of our certified shops for a second opinion. This link is for a list of RepairPal certified shops in your area: https://repairpal.com/lexus-within-10-miles-of-vallejo-california-94591 You can also go here to find out what a brake replacement should cost: https://repairpal.com/estimator/lexus/is250