I work for a university where students are often approved for a Sallie Mae loan, but usually only for a small amount (less than $2,000). When the amount gets higher, then factors like income and the length of your credit history will matter more.
Getting Started. Fouled, damaged, or worn out spark plugs can lead to a variety of engine problems, such as misfires, hard starts, increased emissions, and poor fuel economy. For most vehicles, you should replace your spark plugs every 30,000 miles (consult your owner's manual for your specific interval). It is also recommended that you replace your spark plugs wires at the same time, or you may still experience misfires or other problems.
If your spark plugs fail, your car wonât run. If your spark plugs are in poor condition, your car will not run well and your fuel economy will suffer. What does an average spark plug replacement cost. The cost to replace spark plugs varies significantly based on the type of car you have and where you take your car.ypically a spark plug replacement at a qualified auto repair shop will cost between $100 and $200. A Toyota Camry will likely be on the lower end of the range, while a Mercedes-Benz sedan will be on the higher end of that range (or even exceed the range depending on the model and where you take the car for the repair).