Boosting gas mileage in 2025 relies on routine maintenance, lighter loads, and fuel-conscious driving. Use the recommended octane, avoid unnecessary additives, and consider a hybrid or EV for the biggest long-term savings. Small changes - proper tire pressure, timely service, and smoother driving - add up to meaningful fuel savings.

Why fuel economy still matters

Gasoline prices and the total cost of driving remain important concerns for drivers. While long-term shifts toward electric vehicles (EVs) are underway, most people still depend on internal-combustion cars and hybrids. Small, consistent changes to maintenance, driving habits, and vehicle choice add up.

Maintenance and simple fixes that save fuel

Keep tires inflated to the manufacturer's recommended pressure and check them monthly. Underinflated tires increase rolling resistance and reduce fuel economy. Change engine oil at the intervals your owner's manual recommends and use the oil grade it specifies. Replace a clogged air filter, worn spark plugs, or failing oxygen sensors - these can reduce efficiency and increase emissions.

Remove excess weight and roof cargo

Extra weight makes the engine work harder, especially in stop-and-go driving. Remove unused cargo and roof racks when not needed. For many everyday drivers, carrying less stuff reduces fuel use over time.

Drive smarter, not harder

Gentle acceleration, steady speeds, and anticipating traffic reduce fuel consumption. Avoid hard braking and rapid acceleration. Use cruise control on highways when conditions are safe. Minimize idling; if you expect to be stopped for more than a minute, turning off the engine often saves fuel.

Fuel grade, additives, and treatments

Use the octane grade recommended by your vehicle's manufacturer. Higher-octane fuel does not improve mileage in engines designed for regular gas, but it can prevent knock in engines that require premium. Fuel system cleaners and detergents can restore lost performance if injectors are dirty, but many advertised "miracle" treatments offer little benefit for modern systems. 1

When to consider a different vehicle

If fuel cost is a major expense, upgrading to a fuel-efficient model - hybrid, plug-in hybrid, or full EV - can deliver the largest savings. New conventional engines also tend to be more efficient than older ones. Evaluate total cost of ownership (fuel, maintenance, incentives) rather than purchase price alone.

The longer-term picture

Automakers, regulators, and many buyers are shifting toward electrification. That transition will reduce reliance on gasoline over time, but for now, combining good maintenance, mindful driving, and thoughtful vehicle choices delivers the best, immediate fuel-economy gains.

Quick checklist

  • Check tire pressure monthly and align wheels as needed.
  • Follow scheduled maintenance and replace worn parts.
  • Remove unnecessary weight and roof racks.
  • Drive smoothly and avoid excessive idling.
  • Use the manufacturer-recommended fuel grade.
  • Consider a more efficient vehicle if you drive a lot.
  1. Quantify fuel-economy improvement per unit of vehicle weight removed (e.g., mpg change per 100 lbs) from DOE or EPA sources
  2. Confirm authoritative guidance on when higher-octane fuel improves fuel economy and list precise engine conditions
  3. Review recent studies on the effectiveness of common fuel additives and treatments for modern direct-injection engines

FAQs about Better Gas Mileage

Will using premium gas improve my mileage?
Only if your vehicle's manufacturer recommends or requires premium. Higher octane prevents knock in certain engines, but it does not increase fuel economy in engines designed for regular fuel.
Do fuel additives and treatments really increase MPG?
Most modern fuels already contain detergents that keep systems clean. Additives that clean deposits can help if injectors are dirty, but many marketed treatments do not provide measurable long-term MPG gains for well-maintained vehicles.
How much does removing weight improve fuel economy?
Reducing unnecessary cargo and removing roof racks lowers fuel use, especially in city driving and at highway speeds respectively. The exact improvement depends on vehicle type and driving conditions.
Is it worth switching to an electric or hybrid vehicle?
If you drive many miles or want lower fuel and maintenance costs, hybrids or EVs often reduce operating expenses. Consider total cost of ownership, driving patterns, and available incentives when deciding.
What driving habits save the most fuel?
Smooth acceleration, maintaining steady speeds, minimizing idling, and using cruise control on safe highway stretches are among the most effective habits for saving fuel.