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fuel economy

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How Long Does an Air Fuel Ratio Sensor Last?
If you have a car that was made after 1980, then you have an air fuel ratio sensor. It is a component in your emissions control that sends information to...
How Long Does an Intake Manifold Runner Control Last?
Having the right air and fuel mixture in a car’s engine is the only way for it to run at peak performance. Older vehicles really had no way to control...
How to Figure Out How Much it Costs to Have a Car
One of the largest expenses you have is your transportation. It’s how you get from home to work, school, the grocery store, or the movie theater, and it costs you money. Have you...
How Can I Save Money on Gas?
Everyone wants to get the best possible gas mileage. Here are five ways to get more mileage out of each tank of gas: Remove dead weight: Get rid of...
How to Get Better Gas Mileage with Your Toyota Prius
The Toyota Prius is considered one of the cleanest, environmentally friendly vehicles to drive based on the amount of smog-forming emissions that most other vehicles put out....
Symptoms of a Bad or Failing Variable Valve Timing (VVT) Solenoid
Common signs of a faulty VVT solenoid include the Check Engine Light coming on, dirty engine oil, rough engine idle, and decreased fuel economy.
How Long Does a Carburetor Last?
The carburetor combines fuel and air in the engine by using an intake vacuum supply. The air is pulled down through to the carburetor by the intake vacuum while fuel is siphoned from...
Fuel Economy Myths
Drivers will try anything to get better gas mileage. Topping off your gas tank, ignoring tire pressure, and using premium gas won't improve your MPG.
How to Figure Out Which Type of Fuel Gets the Best Mileage
We all want our car to go longer on a single tank of gas. While all vehicles come with a mileage or mpg ranking, mileage can actually vary...
How to Improve Your Gas Mileage
Every driver wants a fuel efficient car. Check your tire pressure, replace old spark plugs, and change your engine air filter to improve your MPG.
Eco-Friendly Auto Tips
Driving a car is the most convenient ways to get around in today's world. The auto represents instant on-demand mobility, and with this comes a great deal of personal freedom....
How to Choose a Fuel Efficient Vehicle
Nearly all vehicles on the road are operated on fossil fuels such as diesel fuel, gasoline and propane. The process of discovering, drilling, obtaining, refining, and transporting these fuels for our...
How to Choose an Environmentally Friendly Vehicle
Auto manufacturers are currently under pressure to create new vehicles that are more environmentally friendly and to improve the fuel efficiency of the vehicles they currently offer. For consumers, the trend...
How to Decipher the EPA's Fuel Economy Label
The Environmental Protection Agency (EPA), in conjunction with the National Highway Safety Administration (NHTSA), puts out a series of labels for motor vehicles of varying fuel types. The labels allow car...
How Far Can You Drive Your Vehicle on Empty?
Knowing how many miles you can drive on an empty gas tank prevents getting stranded. Nissan Altimas can go the farthest when the low fuel light is on.
Top Automotive News & Stories: July 20-26
Each week we compile the best announcements and developments from the world of cars. Here are the topics you can’t miss from July 20 to 26. Regulators Abandon 54.5 MPG Target ...
What is MPGe: electric car fuel economy ratings explained
When you tell your friends and family that you bought a new car, inevitably the first question you’ll get is, “What kind of gas mileage does it get?” The question assumes that you’ve...
Why More Fuel Efficient Cars are Not Enough to Offset Growing Fuel Use
Fuel efficient electric and hybrid cars have not reduced fuel consumption because of increasing populations, longer commutes, and lower gas prices.
How to Replace a Variable Valve Timing (VVT) Solenoid
Variable valve timing solenoids fail when the Check Engine Light comes on, fuel economy is reduced, there is a rough idle, or loss of power.
Is It Better to Drive or Fly?
Cost, time, and effort affect any decision to travel by car or plane. We analyzed 5 popular U.S. road trips to determine the best travel method.

Related questions

Question
An EGR valve has an error and my engine is stalling out when started.
Hi there. Check the power to the Exhaust Gas Recirculation (EGR) Valve and see if there is a voltage reference. If there is a voltage reference, then back probe the EGR Valve wiring harness plug with the engine running and...
Question
Very High fuel consumption
A P0125 code says that the engine is not reaching sufficient temperature to go into "closed loop" operation. Closed loop operation is essential for fuel economy and low emissions. Basically it's saying that your engine is not warming up. Replacing...
Question
My fuel economy light is on how do I turn it off
Hello, thank you for writing in. The vehicle illuminates the fuel economy light when you are in the fuel saving mode. It is just a friendly reminder that you are in the process of saving fuel. There is no factory...
Question
Slight smell of gas or oil and poorer mpg fuel efficiency
This may be a result of a faulty oxygen sensor. As you may know the oxygen sensors which are part of your emissions system read exhaust gases to determine whether or not the appropriate amount of oxygen is present in...
Question
Average 10.5 mpg.
It is best to abide by the recommendations stated in the owners manual. Turning off traction control may allow more stress to be put on the vehicle and cause accelerated wear in some areas. The traction control is not directly...
Question
Average 10.5 mpg
It is best to abide by the recommendations stated in the owners manual. Turning off traction control may allow more stress to be put on the vehicle and cause accelerated wear in some areas. The traction control is not directly...
Question
Maintainence for my car
If the engine has high miles, I would first consider losses in cylinder compression as a possible cause of the degraded mileage. Other possibilities are a malfunctioning oxygen sensor (check output on an automotive scope) and a stuck open cooling...
Question
Fuel consumption issues after crankshaft position sensor reset
Hello. If your lights are coming on and off then there may still be an issue somewhere with the vehicle. If there was a recent reset due to an issue with the crank position sensor it may be possible that...
Question
Does camshaft position sensor affect in any way the fuel consumption?! 2003 Mercedes ML350
Hello - yes, a failed camshaft sensor can negatively affect fuel economy. With a failed cam sensor, engine management reverts to a "fail safe" engine timing scheme which is less efficient than when all sensors are working properly. The symptom...
Question
BMW 2010 x3 fuel filter
Poor mileage has many very common causes other than dirty fuel injectors. However, if a diagnostic (that is, actual tests) suggests that fuel injectors are dirty the only way they can be cleaned is by removing them from the engine...
Question
Issue of fuel consumption 2008 Honda Accord
Hi there - I would check fuel pressure, and check the fuel injectors for leaks. Both could result in excess fuel being dumped into the engine. I would recommend an inspection of the fuel injection system for proper operation. Unfortunately,...
Question
Worse fuel mileage than prior Cherokees - why? 2010 Jeep Cherokee
iHi there - there are a number of potential issues that might cause the lower fuel efficiency you are experiencing: different gearing, engine tune-up issues (oxygen sensor, coolant temp sensor, clogged air or fuel filters, excess fuel pressure, clogged or...
Question
Bad Gas Mileage
There are a number of things that can cause poor fuel mileage. A faulty camshaft position sensor is one of them. The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing and fuel injection...
Question
with a 14.5 gal tank, i'm getting about 240 miles, what?????
Your vehicle is EPA rated at 23 MPG in city driving and 30 MPG in highway driving. You have stated that you are able to travel 240 miles and your tank capacity is 14.5 gallons. Assuming that you refill the...
Question
excessive fuel consumption?
EPA ratings for this vehicle are stated in units of miles and gallons. The city driving rating for the vehicle is 22 MPG (miles per gallon). The highway driving rating is 32 MPG. Your experience is reported as 15 MPG...
Question
Truck running ruff with newer use engine that just was put in. 2006 Ford F150
Hi there - first task is to check for problem codes, whether the Check Engine light is illuminated or not. This will guide the most direct path to a fix. Since this is an engine swap scenario, I would next...
Question
how far can you drive your vehicle on empty
There really is no way to give an accurate answer to your question. Each vehicle, even different vehicles of the same type, can use fuel differently. It will also depend on the habits of the driver, quality of fuel being...
Question
Mileage
Your fuel mileage will get better over the first three months of driving the vehicle. If after three months you are not getting the advertised fuel mileage then return to the dealer ship to see if the vehicle has a...
Question
How many miles can you drive on highway after gauge says 0?
Remaining vehicle range varies by car model. Based on YourMechanic data, a conservative assumption for most vehicles, including Toyota's, is once the low fuel level warning light comes on, or the fuel gauge reads "close" to empty, you have 30...
Question
Is it mechanically safe to coast in neutral?
Technically, least cost operation is attained if engine idling (at stops) does not exceed 60 seconds and, indeed, some studies put the threshold as low as 10 seconds. Certainly 60 seconds is a conservative estimate. This is why "start-stop" features...

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