Skip the auto shop - Our mechanics make house calls

Q: Fuel range indicator says I can drive 180 miles until empty. I drive half a mile and the indicator already says 165 miles left. What's wrong?

asked by on

My 09 passat, just started to give me what I think wrong fuel readings? I put some gas, indicator says I can drive for 180 miles til empty, 1 Mile later, it indicates 165 miles left? What's wrong? Is it using gas like crazy or is sending the wrong info?

My car has 101000 miles.
My car has an automatic transmission.

A: This calculation your car performs is a con...

This calculation your car performs is a constantly varying calculation due to a couple of things. One part of this calculation is based upon the driving habits of the driver and how the throttle is used in combination with how much fuel is left in the tank. The computer calculates a running average of the fuel used relative to how much fuel is in the tank. As you use more throttle consistently, this average mileage to empty calculation goes down. However, if you feel something is definitely out of the ordinary, have a certified technician, such as one from YourMechanic, diagnose your car's fuel mileage issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: I have a problem of petrol going through to the oil sump and the car backfire and some smoke coming out of exhaust.

Hello. If your oil is being mixed with fuel then you are either getting too much fuel into the engine or you have a serious internal engine issue. Most of the time this is caused by worn out piston rings....

Q: How often show VM dealer need to clean fuel injectors. Still misfiring after fuel injection service

Hi, thanks for writing in. Misfires can happen for many different reasons beyond just dirty fuel injectors. This may be due to a vacuum leak, but it can also be caused by a weak fuel pump (low fuel pressure) or...

Q: Car randomly stalls at idle and at high speeds when clutch is pressed

Hello. This is a common issue when the idle air control valve not working properly. This is a unit that regulates air intake as it is mixed with fuel at idle or low speeds prior to being injected into the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.