If your car is showing bad mileage, you must find out What Causes Bad Gas Mileage. Actually most people have unrealistic mileage expectations, but generally you have to look at your own driving habits to find out the cause. If you are doing some aggressive driving, it definitely tells on your tank. Using the air-conditioner or driving in severe winter conditions may also be What Causes Bad Gas Mileage. Your car may be having some mechanical problems or the gas that you have filled is bad.

If you have measured the mileage on every fill up, then you can calculate the gas mileage accurately. Extreme weather conditions or long-distance traveling, or having been caught up in too many traffic snarls in the last couple of weeks may alter the calculation.

Engine Related Problems

Have your oil filters checked regularly, and in any case, your car servicing must be done regularly, so that the engine can perform perfectly. A faulty engine is generally the first factor What Causes Bad Gas Mileage.

The air pressure of the tires should be kept constant, and as the vehicle gets older, it is likely that some parts of the car get worn out and stop performing well. You should always make sure that you screw your gas cap on till it clicks well. What Causes Bad Gas Mileage could be dirty air filters.

You could buy a fuel injector cleaner and add it into your gas tank before you fill it up. It will help to clean your injectors and by the time you need to fill up again, they will be clean.

Tips

Keep your car light; empty out all the unnecessary things from the trunk. What Causes Bad Gas Mileage is the extra weight that the car has to pull along every time. Do not mess with the aerodynamics, which will definitely give you bad gas mileage.

Basically What Causes Bad Gas Mileage can just be bad service, an old engine which is badly tuned and also bad driving. Get your car serviced at a reliable place, preferably at the service center for your car, not with your local mechanic.

Careful Driving

So, if you are a careful driver and want to get the best gas mileage, just take care of a few things. What Causes Bad Gas Mileage are speeding on the highway, keeping your windows rolled down at a high speed, running your air-conditioner all the time and not maintaining a consistent speed. If you are keeping a watch on all these factors, there is no reason for your car to be showing low gas mileage. It is time you took it to a dealer so that he can have a look at the car.