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High gas prices aren't going away soon, but if you're paying extra for premium, you probably can save the money. And don't even think about midgrade.
Hydrogen fuel enhancement is the process of using a mixture of hydrogen and conventional hydrocarbon fuel in an internal combustion engine, typically in a car or truck, in an attempt to improve fuel economy, power output, emissions, or a combination thereof.
When gas prices soar, the Sentra's small fuel tank can make filling up less heartbreaking than larger cars with even bigger ones. Base price: $21,745 EPA combined/city/highway: 34/30/40 mpg
At higher speeds, wind resistance plays an increasing role in reducing fuel economy in automobiles. At 60km/h, the global average speed, energy loss due to air drag in fossil fuel cars is approximately 5% of the total energy loss. Friction (33%), exhaust (29%), and cooling the engine (33%) account for the rest. [12]
According to the EPA, "fixing a car that is noticeably out of tune or has failed an emissions test can improve its gas mileage by an average of 4%, though results vary based on the kind of repair ...
Fuel-saving devices are sold on the aftermarket with claims they may improve the fuel economy, the exhaust emissions, or optimize ignition, air flow, or fuel flow of automobiles in some way. An early example of such a device sold with difficult-to-justify claims is the 200 mpg ‑US (1.2 L/100 km) carburetor designed by Canadian inventor ...
The main federal incentive for consumers to purchase fuel efficient vehicles is to give tax credits. States also have their own incentive programs to further incentivize fuel efficient vehicles in their own states. These incentives range from more tax credits, to discounts on insurance, to price reductions on car registration fee's.
For those looking to save money at the pump, hybrid drivetrains can’t be beat on fuel economy. These are the hybrid cars and SUVs that are rated at over 40 mpg.