Cars and trucks have gradually experienced an increase in theiroperational lifespan. With more precise automotive engineering, newdurable materials, and stricter operating standards, contemporaryvehicles can easily be driven for dozens of years if cared forproperly. However, picking when a replacement motor may benecessary can mean the difference between maintaining a workingvehicle and having additional expenses from a motor that fellapart.A properly maintained car engine should last for between 100,000and 150,000 miles on average. If the vehicle in question falls intothat mileage range or has exceeded it, it may be the right time tobegin considering a replacement motor. For most vehicles, motorsare not consistently maintained throughout the duration ofownership. An oil change may be miss