Fuel Savings Tactics
Fuel-saving advice has a credibility problem. The same listicles recycle tips that were marginal in 1995, mixed in with a few that genuinely work, and almost none of them tell you how much you should expect to save. That makes the whole genre hard to act on.
The guides in this category attach a number to each tactic. Some are worth real money: how you accelerate and anticipate traffic can move consumption by 10 to 25 percent, which on typical mileage is a few hundred dollars a year. Others are worth having but modest: correct tire pressure is a percent or two, not a revolution. And some widely repeated tips are simply false, like buying premium fuel for an engine designed for regular, which costs you money for no measurable gain.
The honest summary is that a handful of habits account for most of the available savings, and they're all free. The maintenance items matter mainly because a neglected car quietly gets worse over time rather than failing outright. Read the checklist first (it ranks everything by what it's actually worth), then go deeper on whichever items apply to how you drive.
Start here
The best entry points if you’re new to this topic.
The Complete Fuel Saving Checklist: 50 Ways to Spend Less
50 verified gas-saving actions in eight categories, from price strategy and rewards to driving habits and maintenance, with realistic annual savings.
Eco-Driving Techniques That Save Gas and Cut Emissions
Master eco-driving habits that cut fuel consumption by 10 to 25 percent through anticipatory driving, smooth acceleration, and engine braking.
The Right Tire Pressure to Maximize Gas Mileage
Underinflated tires cost the average driver $60 to $120 a year in wasted fuel. See the right PSI for every vehicle type and the science behind the savings.
More in this category
What Engine Idling Really Costs You
Car idling burns between 0.16 and 0.8 gallons per hour. Learn the real cost of idling and the simple habits that stop wasted fuel.
The Complete Guide to the Fuel Savings Calculator
Learn how to use the Fuel Savings Calculator to see the real dollar impact of switching vehicles, driving less, or improving your MPG before you commit.
Hypermiling: The Extreme Fuel Saving Technique
Hypermiling means getting every possible mile from every gallon. Learn the key techniques, from easiest to most advanced, and the science behind each.
Does Cruise Control Actually Save Gas?
Our 500-mile test of cruise control vs. manual throttle on the same route shows how much fuel it saves, and when cruise control helps or hurts.
Does Air Conditioning Kill Your Gas Mileage?
AC can cut fuel economy 5 to 25 percent depending on conditions. See the numbers by vehicle type and speed, and when open windows beat air conditioning.
How to Combine Errands to Save Up to $600 a Year on Gas
Combining errands is one of the highest-return gas-saving habits, at zero cost and minimal effort. Here's exactly how to do it and how much you can save.
Car Idling and Gas Waste: How Much Fuel It Burns
Idling burns 0.16 to 0.8 gallons per hour depending on engine size. See the real cost of idling and the fastest ways to stop wasting fuel.
Does Premium Gas Really Give Better Mileage?
Premium costs 40 to 60 cents more per gallon but gives most vehicles no measurable MPG gain. A mechanic's breakdown of when premium actually matters.
How Extra Weight in Your Car Affects Gas Mileage
Every 100 pounds of extra weight cuts fuel economy by about 1 percent. See the exact numbers by vehicle type and the fastest ways to shed weight.
Highway vs. City Driving: Which Burns More Gas?
City driving burns 20 to 40 percent more fuel per mile than highway driving because of stop-and-go cycles. See the breakdown and how to cut both costs.
10 Car Maintenance Tasks That Improve Your Gas Mileage
Neglected maintenance is an overlooked cause of fuel waste. These 10 tasks can recover 5 to 20 percent of lost fuel economy without changing how you drive.
OBD2 Scanners and Fuel Economy: Can One Improve Your MPG?
How OBD2 scanners detect efficiency-robbing engine problems, show real-time MPG, and verify that repairs actually improved your fuel economy.
Tools for this topic
Put these guides to work with your own numbers.