• A new air filter can improve your fuel economy up to 10%
• Correct tire air pressure can increase mpg by three percent, not to mention preventing premature tire wear and failures or blowouts caused by over or under-inflated tires. Tires can look normal when they are seriously under-inflated. Use a quality air pressure gauge and check your tires when they’re cold, before traveling more than one mile.
• Digital tire air gauges help maintain accurate air pressure.
• Excessive idling wastes fuel. If you’re going to be sitting still for more than a couple of minutes shut the engine off.
• Using overdrive whenever you can saves fuel by decreasing the engine speed.
• Using the cruise control whenever possible saves fuel because it keeps the vehicle at a constant speed rather than variable speeds. But keep in mind the over 60 mph rule applies here too.
• Keeping the vehicle tuned up and in top running condition saves fuel. A poorly tuned engine can lower fuel economy by 10 to 20 percent.
• Poor emissions and / or a faulty oxygen sensor can cause a 40 percent reduction in fuel economy. Can you believe that? A 40 percent REDUCTION.
• Following the recommended service and maintenance schedules will save you fuel.
• Using the recommended grade of motor oil will increase fuel economy by one to two percent.
• Speeding and rapid acceleration reduces fuel economy anywhere from five to 33 percent depending on your individual driving habits.
• Added weight that you don’t need reduces fuel economy significantly. We’re all guilty of this one!
• Only using the dash air conditioner when it is absolutely necessary will save a significant amount of fuel.
• Use regular gas unless your owner’s manual specifies a high-octane gas. You’re just throwing money away when you pay the extra money for premium fuel.

How do you calculate gas mileage?
Do you know how many miles you get to a gallon of gas? Here’s how to find out. Fill the fuel tank and write down the odometer reading. The next time you stop for gas fill the tank again. Now divide the miles you traveled between fill ups by the amount of gas you bought the second time you filled up. This is how many miles you are getting to a gallon of gas. We may have no control over the prices at the pump, but as you can see we have total control over getting the most out of the fuel we put in our tank.

Breakdown of the mpg killers