Unless you’re a regular on the Forbes list of the world’s billionaires, chances are that, at some point, you’ve been concerned about the cost of putting gas in your car. According to AAA, the national average price is $2.52 per gallon, with residents of Texas and South Carolina having the cheapest gas at only $2.28 per gallon (sorry, Hawaii—you have to pay the highest at $3.50 per gallon). These prices are still a heck of a lot better than the highest recorded average of $4.11 per gallon back in 2008, but it’s still a plenty big chunk of change.
It’s a given that drivers have other expenses in their lives than just filling their cars with gas, and so, every dollar that we can free up from the fuel pump is one we can spend elsewhere (yes, we know guacamole is extra). Therefore, it’s no surprise that many people take steps to increase their fuel efficiency. For example, consider hypermiling, which is a driving method for maximally increasing your vehicle’s energy efficiency. Common hypermiling techniques include accelerating and decelerating slowly, following the speed limit, and avoiding crowded roads.
But is there anything else you can do to put your gas guzzler on a diet? There are thousands of mods on the market that promise to do just that. Unfortunately, these mods make a lot of outrageous claims. How do you know which ones are worth it and which are just gunning for your wallet? Fear not—I’m here to help.
20. Crazy: Fuel Magnets
Fuel magnets claim to increase the efficiency of your vehicle by breaking up fuel molecule clusters into smaller, more combustible fragments.
Simply place the magnets around your fuel line about two inches from the engine, so they say, and you’ll instantly see a 24% improvement in MPG.
These handy tools also supposedly eliminate carbon and varnish deposits, thus saving wear and tear on your engine. And all this can be yours for the low price of $7.99. Okay, really? Not to get too scientific, but at the chemical level, gasoline is an alkane, which is a tree-like structure of hydrogen and carbon atoms (neither of which are magnetic). In fact, there are only four metals that are considered magnetic (iron, nickel, cobalt, and manganese), and none of these are used in gasoline. In the end, fuel magnets do nothing but waste your $7.99.