Air Filter
Over time, air filters get dirty, and the dirtier they get, the less efficient your engine will run. Luckily, it’s pretty easy to carry out a visual check to find out whether your vehicle requires a replacement air filter. Your owner’s manual will also give details as to how often you should be changing your air filter.
A simple air filter change can improve your fuel consumption by up to 10% — saving you money, in the long run.