The engine can be considered the heart of your vehicle and converts fuel to power so your car can move. As such, it is the most expensive car part to replace and repair, especially if there has been significant damage.

The 'Too Expensive to Fix' Point: Generally, if the cost of a repair exceeds the value of the car, it's probably not worth it. Say your old car is worth about $3,000, and it needs a new transmission that's going to cost $4,000. In this case, you're better off not doing the repair.