Keep your car properly tuned for optimum performance.
A properly maintained vehicle can improve its efficiency, reduce emissions and save you money. Regular engine performance maintenance will help you burn less gas, pollute less, and prevent car trouble down the line. This will include checking the spark plugs, replacing the fuel and air filters, replacing ignition system and/or emission system parts if needed and ensuring the onboard computer control system is working properly.
Improve gas mileage by 4% on a proper tune-up and up to 40% when fixing a serious maintenance problem such as a faulty oxygen sensor. Worn or fouled spark plugs can cause the engine to lose power or misfire and waste fuel.