The length of time that a Subaru BRZ will serve you depends greatly on how well you take care of it on a regular basis. Some people believe that with the appropriate care and upgrades, it can have a lifespan of up to 200,000 miles if it is properly maintained. This is proven true by a 40,000-mile test conducted on the model by an avid automobile fanatic. Even after the initial experience behind the wheel, it still had a lot of life left in it.