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Fuel Saving Tips

Tire pressure...

If you read the side wall of a tire you will see it tells you the max pressure @ the max load. This is because you will need this pressure to carry that load. If you are at lower load you will need a lower setting. Pressure has to match the load and when it does your tires will wear perfectly flat. For this reason you should never follow the recommended pressure from the car makers. You should be working out your own for your car or truck as you normally load it. With that in mind, most times you can run it higher and gain more savings in fuel then lose from wearing the tires out faster, all without hurting safety. But, also keep in mind to high can be a safety issue if you go to far. It is however always safer a to 5 pounds high over be 5 pounds low. When they are low the side walls will flex more building way more heat and destroying the tires. It will also reduce your control of the car when the tires just fold over when you are trying to turn.

posted by Crf450r420 on September 28, 2014

this tip works for 100% of voting Fuelly members.

Know before you go...

Don't just do the neutral cost or downshift until you know your vehicle. If you get a cheap bluetooth to OBDII adapter on say Amazon. You can use an app like Torque to see how your car works. Both my girlfriends and I have small cars one 1998 the other 2006 that both don't have trailing throttle (the injectors are not shut off when intake is under high vacuum) even though they are both well into the years you would guess they have such. This setup will also give you a way to add instant and average MPG, so you can develop efficient habit that fit that car. Then there are a ton of other things like code reading which also come with it.

posted by Crf450r420 on September 28, 2014

this tip works for 100% of voting Fuelly members.

want good FE? I want to help

1. I have found that cars get better mileage on better fuel. For instance keep track of different gas companies and what you get from them. For instance: my 2004 Ford Taurus gets better mileage from Shell or Cenex or BP vs some mom and pop stations. Just cause its cheaper don't mean its good gas! These name brand places also tend to use detergents and additives to help with engine cleanliness with prolonged usage. 2. If you can afford it and your car has less than 100,000 miles on it switch to synthetic oils. Less friction in engine/ transmission = longer life and better fuel economy. 3. If planning a longer trip, drive part of it while sun is down. You will achieve better mileage for several reasons: less traffic set your speed n go. And you will have a cooler engine and you may not have to use the AC as much. 4. Always fill your tank. If you live in the north like I do, in winter you never know what could happen when weather is bad. Better to have fuel and not need it, than to need it and not have it. Less chance of a freeze up from watered fuel (cheapskate stations) and you keep your fuel pump cool and save money on repairs! Expensive ones! Gas tank levels of less than 1/4 is playing with fire especially with older and higher milage vehicles. 4. Read these tips here on this page! I've probably gained a couple miles in overall economy by listening and finding what works! ;) and it has made me a better and more patient driver and more responsible. 5. If you're patient you can save fuel by paying attention to, AND driving speed limits! I do almost 100% of the time and I see about a 2mpg difference. Think about it: if you drive 60 instead of the posted 55 how much time are you really going to gain huh? 5 mins? Plus, you won't need to romp on the gas to pass eevery time you turn around. I get passed all the time and I usually see them at the next light anyways. Don't be impatient. If someone is driving the limit: simply re set your cruise and it won't be an issue. 5. When you see the 1/5 mile slow down speed sign, coast to new speed limit and reset cruise. Even if youre a little early.Speed limits start AT the sign, you'll optimize how much brakes are used and you avoid damage to your driving record and insurance premiums ;)

posted by hylander89 on September 21, 2014

this tip works for 0% of voting Fuelly members.

Consider a cold air intake

Letting your engine breathe better both improves power and economy, as well as giving a sportier note and better response at lower revs, allowing you to shift out sooner. Many auto manufacturers now offer these to be installed at your dealer, and if done at the dealer it won't void your warranty.

posted by Texas on September 19, 2014

this tip works for 0% of voting Fuelly members.

Back Into Parking Spots

By backing in (or pulling through to park nose-out, in lots that have two spots nose-to-tail), you do your reversing when the transmission is warm, eliminating having to drive in Reverse with a cold transmission and engine. You'll eliminate the loud "clunk" (which is hard on the transmission) and also only go through a single acceleration cycle on a cold engine when departing your destination. It's also safer, since you will see the surrounding area immediately before backing in, instead of seeing the area, getting into and starting your car, and then backing out.

posted by F14Scott on September 14, 2014

this tip works for 88% of voting Fuelly members.

Use the car that is best for your trip

Most people own more then one car, A smart person will own cars that fit different applications. Find out which car is more efficient on the highway, and use it strictly for long distance trips and keep your gas guzzlers in town where less distance is traveled.

posted by Macbriggs2 on September 4, 2014

this tip works for 41% of voting Fuelly members.

civic HX leanburn

On the 7th generation civic HX, Keep it below 68 mph to stay in lean burn mode.

posted by 01silvercivichx on September 3, 2014

this tip works for 35% of voting Fuelly members.

How to get the most torque , and best MPG from a DIESEL motor.

When travelling on the Motorway class roads, use your Cruise Control, but set it 5km under the posted speed limit, and when approaching the valley of a long climb, (say 50 - 100m before the lowest part) let the cruise determine the amount of fuel to give the engine. As the engine will 'Sense' the amount of Incline, as it is coming out of the flat and approaching the hill, it will give just enough fuel to maintain the speed at the speed set (say 90 km/hr). After the Car has topped out at the flat, then you can take the cruise up to say 100Km/hr (if it is Daytime and clear weather with no traffic). Check your engine specifications, you will be surprised, that the torque curve is not flat over the RPM Range from Idle to Maximum Torque (1250 for Some Diesels), and then declines again as RPMs increase from 1250 to redline.

posted by CobourgVeeDubYah on August 29, 2014

this tip works for 15% of voting Fuelly members.

Bad tip: Only filling up half-way

I just wanted to point out that MOST vehicle's fuel pumps are mounted in the gas tank, which means that they are cooled by the fuel, running at less then a quarter tank takes that cooling feature away from them and will cause them to wear out or even fail a lot faster due to excessive heat build-up, and if your only going from 1/2 to 1/4 every time, you are most likely going to spend more time looking for the cheaper good deal gas and driving out of your way to get it, causing you to spend more money in gas. Depending on your vehicle, shop and the parts it uses, a fuel pump replacement could cost you 1000$.. 300$ for parts 700$ for labor. The amount of money you are going to save is going to be way offset by the cost of having that fuel pump replaced, as most fuel pumps are very expensive for the OEM. Unless you know that your fuel pump is not mounted in the gas tank, and is therefore mounted under the vehicle and cooled by air, I would not just do half-fuel ups.

posted by SilverBullet1997 on August 28, 2014

this tip works for 72% of voting Fuelly members.

top tier gas

The stations that use top tier gasoline use detergents that will reduce deposits on fuel injectors and intake valves. Check toptiergas.com and read about it

posted by cmaxlen on August 19, 2014

this tip works for 81% of voting Fuelly members.

Speed-O and Odometer error

Vehicle speed and odometer may have different errors. Most vehicles with ABS option the vehicle speed is normally taken from one wheel or averaged among the 4 wheels. The Odometer is recorded from an output on the transmission. If you do not have ABS on your vehicle the Speed and Odometer is read from the Transmission. The last option is you have ABS, but the manufacture was still reading it from the transmission. The best method for insuring the accuracy of the Speed-O-meter is to test it against a GPS. The best method of insuring the accuracy of the Odometer is measuring it against a known distance, such as the milepost of an interstate highway over a distance of 100 miles or more. GPS Trip distance measurement is inaccurate.

posted by racenviper on August 18, 2014

this tip works for 68% of voting Fuelly members.

Oncoming traffic

Ever felt the wind from oncoming traffic? One vehicle is not so bad, but we usually don't ever just have one car pass us in the opposite direction. Giving as much distance as is safe between you and oncoming traffic is not only safer, but can help keep your fuel mileage from dropping unnecessarily, especially as traffic gets heavier.

posted by sparkn on August 15, 2014

this tip works for 83% of voting Fuelly members.

US Imperial to CAN Metric conversions

Canadians travelling in the US: Feel free to make a copy and use this Google spreadsheet to convert your US to CAN fill-ups since you can't flip back and forth in Fuelly. https://docs.google.com/spreadsheet/ccc?key=0AuiLvaul1obRdFAyZ3hvTTc3NDIxcnZ3VGVOR1A1RWc&usp=sharing You will need to have a Google account and then you can make your own copy first. Go to File > Make a copy.

posted by gory on August 14, 2014

this tip works for 100% of voting Fuelly members.

Find the sweet spot of needed throttle pressure.

When traveling around highway speeds note your throttle input. Find the speed that requires the least amount of pressure on the accelerator/throttle. There are lots of variables that effect this and it will change day to day. Slower may not always be more efficient. Your car may need more rpms, higher speed to be efficient. An easy way to monitor this is through the addition of an "eco gauge" that can easily be plugged into your cars computer.

posted by Lokis_Tyro on August 13, 2014

this tip works for 79% of voting Fuelly members.

Turn off the engine

When sitting at a red light (unless you're right at the front) or waiting for a passenger turn off the engine. Saves fuel and pollution. Lights on orange - restart the engine ready to go. The heater can still put out warm air or the aircon cool air for a little after the engine is switched off.

posted by xj53c on August 10, 2014

this tip works for 30% of voting Fuelly members.

Be sure that your engine is idling well

An engine idling above 1000 rpm's is a bad symptom of a failure of it, but it maybe minimal so you keep on running it that way because you don't notice it or simply you think that it can run perfectly that way, that it's just an odd thing. Well, be sure that the engine is idling at the speed that the owner's manual advise, if it's not something may be wrong as fuel injectors, throttle bodies, intake systems, etc... Those reparations are simple and if you don't do them, besides having a mechanical failure you'll be wasting fuel.

posted by judacomadc on August 6, 2014

this tip works for 31% of voting Fuelly members.

Don't turn on the engine if its not needed

There are some situations in which turning on the engine is not needed, in my case I do it when I have to move some feet my car to give way on a parking lot or so, taxi drivers in my city do it as well. It may sound dumb, but by doing this you avoid operating the engine when less efficient because of the cold starts. Also, when you hit a big traffic jam like when some accident happened and traffic is not moving you can turn it off, or if a cop or somebody stops you to have a chat you can switch it off as well. The thing is: try to use the engine only when is really needed.

posted by judacomadc on August 6, 2014

this tip works for 45% of voting Fuelly members.

Set mileage calculator to instant-read

Instead of leaving your mileage calculator on the default average MPG setting, move it to "instant-read" mode. You'll get immediate feedback on how various actions affect your MPG. For example, I learned that tailing a semi on the highway increases my MPG 7-10 mpgs, and turning on the AC decreases it by 5. As a result of this instant feedback, I have learned how to become an even more gas-efficient driver!

posted by Juttah on August 4, 2014

this tip works for 95% of voting Fuelly members.

Use high-quality synthetic lubricants.

The most inefficient part of your car is the motor. A minority of the potential chemical energy that enters your cyclinders will be converted into usable power; most of the energy in the fuel is lost due to pumping losses, friction, and heat-transfer. Reducing the friction in your engine, transmission, and differentials by using a PAO based, non petroleum lubricant (Like Amsoil, Redline, or Royal Purple), will increase your feul efficiency 3-10%. The effect is most noticable in large 4WD vehicles, and is less noticable in lighter cars. For instance, my 2001 2.3L Accord milage increased by about 7% after switching, as you can see in my fuel history.

posted by ChampagneRocket on August 4, 2014

this tip works for 69% of voting Fuelly members.

Reduce braking to save gas

You will get better mileage by using the brakes as little as possible, maintaining speed and momentum wherever you can. You don't even need brakes at all, if the horn works!

posted by Stoopy on July 31, 2014

this tip works for 87% of voting Fuelly members.

Modding your off-road vehicle: what to expect

If expectations are in line with reality, unhappiness is avoided. When modifying a Jeep or other SUV, keep in mind: - 2 highway mpg for Roof Basket [reduced aerodynamics] - 3 highway mpg for Larger Tires (1.5 inches taller than stock in my case; suspension lift may be required to run larger tires) [taller tires reduce mechanical advantage, like running in a higher gear. Larger tires are also heavier. Results will vary.] - 1 highway mpg for adding steel skid plates, rock sliders, bumpers, etc. [extra weight] There is a trade-off between mpg and off-road prowess. This trade-off can be partially overcome by spending even more $$$: +2 highway mpg for Re-gearing the differentials (e.g., from 3.73 to 4.10 ring & pinions). This mod can regain your rig some power and mpg if you are running tires 1.5+ inches taller than stock, but will decrease mpg with the stock tire size. [increases mechanical advantage, offsetting larger tires. Results will vary.] Example: V6 Jeep Liberty with roof basket, 4 inch lift, larger tires (245/75/R16; stock 225/75/R16), but not yet re-geared: Stock Configuration: 14 mpg city, 22 mpg highway Modded: 11 mpg city, 16 mpg highway

posted by lfhoward on July 28, 2014

this tip works for 83% of voting Fuelly members.

AC Setting helps MPG

Cars typically are more fuel efficient when the air conditioner is set to re-circulate interior air. This is because keeping the same air cool takes less energy than continuously cooling hot air from outside. Of course, turning off the air conditioner saves even more fuel. For driving around town and not at highway speed, keeping the windows open and the air conditioning off is the more fuel-efficient way to go, if you can stand it.

posted by 1motime on July 27, 2014

this tip works for 89% of voting Fuelly members.

Choose the better route.

If you choose the route closer to sea level, and higher in humidity your engine will run more efficiently then EPA estimates. Water vapor adds to the combustion pressure, giving you more HP.

posted by Macbriggs2 on July 25, 2014

this tip works for 25% of voting Fuelly members.

Stop wasting your time.

Stop wasting your time waiting for yourself to get hungry, or waiting for the other shoe to drop. Make an errand day like an adult, load that kitchen up and stop making trips to grab refreshments and food, you can make that at home for cheaper and you know it. That'll save you a ton in gasoline, not to mention all the savings not paying people to make your meals / drinks !!!

posted by Macbriggs2 on July 24, 2014

this tip works for 93% of voting Fuelly members.


For those of you with manual shift vehicles: If you're not using the a/c constantly, coasting to stop lights in neutral with the engine off, and keying back on as the light turns green, can greatly increase the gas mileage of any vehicle. One long, light pump of the brake pedal will not deplete the brake booster, leaving you with plenty of braking power as you come to a stop. This method alone gave me an extra ten mpg on my daily drive, which adds up fast!

posted by cowmeat on July 20, 2014

this tip works for 26% of voting Fuelly members.

Cruise control on roads with hills

Never use cruise control on roads with a lot of hills. You will waste more gas than you would with normal acceleration. For instance when going down hill take your foot of the gas pedal and coast down. Once you get leveled out use the gas pedal again. Cruise control is good for the Freeway/Highway.

posted by AdamStryker on July 18, 2014

this tip works for 83% of voting Fuelly members.

Hybrids - use EV mode if your journey starts at a slow junction

Hybrids like the prius have to run the gasoline engine at startup to warm up the catalytic converter. But if your commute starts with a junction onto a busy road, your gasoline engine will be running for several minutes to do this while you wait. Instead, switch to EV mode at startup, and keep in EV mode until you finally get out into the traffic. Now you need your gasoline engine to get up to speed, so it can finally warm up the cat converter now.

posted by willsmithorg on July 18, 2014

this tip works for 88% of voting Fuelly members.

Tyre pressure - handbook or sidewall?

Often the maximum inflation pressure written on your tyre's sidewall will be considerably higher than the pressures recommended in your vehicle's handbook. Inflating to the sidewall rating may well give slightly better fuel economy, but the extra air pressure will usually cause the tyres to bulge in the middle of the tread and wear unevenly, meaning you'll need to buy new rubber much sooner. Instead, always inflate to the recommended tyre pressures in your vehicle's handbook.

posted by weeblesfall on July 17, 2014

this tip works for 56% of voting Fuelly members.

Weight matters

If you have a large fuel tank or a small engine in a midsized or large car, try filling up only half way. The more fuel you add, the more weight you add, and therefore the more fuel you will use to move all that fuel.

posted by Gregmech on July 14, 2014

this tip works for 8% of voting Fuelly members.

get moving

Get moving from a stopped position- transmissions are stll designed to get the vehicile moving from a stopped position. Getting up to speed is still the optimum way to get the best gas mileage.

posted by Caddie149 on July 5, 2014

this tip works for 38% of voting Fuelly members.