How do spark plugs affect fuel consumption?

Over time, spark plugs become worn because of the intense heat and pressure in the combustion engine. As the spark plugs wear, the spark plug gaps widen, also weakening MPG. The National Institute for Automotive Services reports that worn spark plugs can decrease fuel economy by as much as 30\%.

Does upgrading spark plugs make a difference?

In short, yes, in some situations spark plugs can increase horsepower. These ‘massive’ gains of one or two per cent generally won’t be exceeded, even if you’re replacing really old and worn spark plugs for new ones. In this case, your essentially just restoring your car back to its peak performance.

How can I increase my car’s mpg?

How to Improve Gas Mileage in 5 Steps

1. Clear out the extra clutter. There are some items you should keep in your car, like an emergency kit.
2. Limit idling.
3. Keep your speed steady and within the speed limit.
4. Check your tire pressure.
5. Perform regular maintenance.

What mileage should you change spark plugs?

every 30,000 miles
And as a general rule, we recommend replacing spark plugs every 30,000 miles, which falls in line with most manufacturers’ recommendations. You can check your owner’s manual or the manufacturer’s website for information specific to your make and model vehicle.

Do platinum spark plugs make a difference?

Platinum is much harder metal than nickel alloy and has a higher melting point. Another advantage of platinum spark plugs is that they run a little hotter, which burns deposits off the spark plug better and helps prevent fouling. Platinum also handles high heat, enabling the spark plug to wear better.

Why does my MPG keep going up?

Your spark plugs are responsible for sparking combustion in your engine. If they misfire, or are working poorly, this can affect your gas mileage in a negative way. Having bad fuel injectors can cause bad mileage. This causes more fuel to be used, and will use up more gas than you need.