Poor gas mileage

Okay- thanks for the public announcement;...just kidding!
Mike it sounds like you have a heavy foot on the gas pedal- speeding around town- Ohhh, I gotcha' again! Or someone is pilfering your gas by siphoning it out; LOL

Okay, all kidding aside, the following issues can cause poor fuel economy:

1. Incorrect tire pressure
2. a bad or malfunctioning oxygen sensor
3. dirty or plugged air filter
4. dirty or malfunctioning fuel injectors
5. improperly working spark plug(s) e,g. misfires or improper gap
6. poor driving habits, like sudden accelerations
7. engine idling for inordinate or extensive amounts of time
8. and as silly or unbelievable as it might sound, the type of motor oil...the viscosity that is used can affect gas mileage by up to 10-12%; regular oil changes using synthetic or manufacturer recommended oil that reduces friction should be employed.
9. Defective coolant sensor
10. Defective thermostat
11. a leak in the intake manifold or EGR
12. Poor compression- If you are driving a car that has high mileage, over 100,000 miles, affects fuel economy
13. clogged catalytic converter or some other restriction in the exhaust system
14. Dragging brakes
15. slipping clutch or transmission
16. Lugging around excess weight in the car

Any single one of...or combination of the above, could greatly reduce engine performance and affect gas mileage.

Code P 0125 indicates insufficient coolant temp to enter closed loop operation. Most likely cause is either engine is not warming up (stuck thermostat) or more likely bad coolant temp sensor is making computer think engine is not warm and thus sends excess fuel injector pulse making engine run rich. Very common problem which kills gas mileage and may make car run poorly. Easy part to test or just change.

it is very possible that you got a bad plug wire check and make sure the plug wire is seating right and staying in place

misfire is caused by poor gas, bad injector, poor fuel pressure in some cases, bad spark plug, wire, ignition coil, poor compression. check the computer for codes this will help in diagnosing the problem.

Check your spark plugs.

If you do not have a "check engine" light on, then one of the many unmonitored components may be bad.

To start, the engine has a "cold" start routine. This system uses a temperature sensor to activate a step-up in RPM and enrichens fuel mix. There may be 2 on your model. You want to look at the one that does not work the dash gauge.

Skipping can be a misfire. A misfire wastes fuel and gives poor power.
A dirty fuel injector can flood the engine causing hard starts. Dirty sparkplugs can cause similar problems.

On cold starts, sticking valve lifters can also make an engine miss and then clear up as the oil flows when heated.

Hi

As far as the review says the mileage should not falter since it is new as you said. However

These are the causes of a poor mileage in a car:-

Poorly Inflated Car Tires

Car tires that are improperly inflated create significant road resistance and drag on a moving car. A car engine has to work harder to propel a car forward due to this increased tire/road resistance. This resistance chips away at a car's gas mileage.

Dirty Air Filter

A dirty air filter impedes air flow into a car's engine, a process that disrupts normal engine combustion and makes it less efficient. This causes a reduction in both engine performance and gas mileage.

Bad Spark Plugs

Spark plugs are responsible for igniting a car's air/fuel mixture, an event that causes a mini explosion inside a car's engine cylinders. Bad or dysfunctional spark plugs don't fire, or ignite, properly; thus, they affect engine combustion negatively, which in turn negatively affects gas mileage.

Bad Oxygen Sensors

For a car to be at its most fuel efficient, its oxygen sensors, small and electronically operated, automatically adjust a car's air/fuel mixture and have to be functioning properly. Bad oxygen sensors cause abnormal air/fuel mixture ratios, a condition that results in poor gas mileage and poor vehicle performance.

Leaky Fuel Injectors

A car's fuel injection system is responsible for injecting precise amounts of fuel into a car's engine cylinders, where it is combined with air and ignited. For a car to perform properly, a specific amount of fuel has to be injected by each fuel injector into each engine cylinder. A leaky fuel injector wastes fuel by leaking it outside the engine and reducing the amount of fuel that makes it into the engine. This results in wasted fuel and reduced gas mileage.
It is suggested to start with a code scanner to find out if there are any stored fault codes in your car.

Also check this link for some helpful tips:-

http://www.wikihow.com/Increase-Fuel-Mileage-on-a-Car

Please get back to us if you have further query else please accept the suggestion.
Thank you for contacting fixya.com

I WOULD SAY YES BECAUSE THE LUCAS FUEL INJECTOR CLEANER IS JUST HELPING THE INJECTOR SPRAY BETTER

there are lots of things that can affect gas mileage. if the spark plugs and wires are worn out, the air filter being dirty, dirty fuel filter, proper inflation of the tires, O2 sensors that are contaminated and performing poorly. the first thing to do would be that the engine is in good working order, as in no check engine light, no misfire, etc. a poorly running engine will put out terrible gas mileage. then you can start with the things i listed.

If the gas odor is coming from the engine, than the problem is most likely a cracked or poorly seated fuel injector.