Why is the Fuel Level in the app so different from my car’s readout?

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Posted 4 years ago

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NOTE: This FAQ pertains to the 1st & 2nd generation Automatic adapters only.

UPDATED 11/2016


Currently Automatic leverages the information the cars provide about the fuel level to display the fuel gauge. This information is normally provided as a percentage of the fuel tank in the car and Automatic displays this directly without any manipulation. As discussed in this Edmunds article, some cars have discrepancies between the value reported in the OBD port and fuel gauge in the car’s dashboard. Unfortunately, it is very hard to identify if the cars do have this discrepancy at all and correct for the same. In the tests we conducted for this feature across numerous car models, we saw that Automatic was more accurate in some cases, less accurate in others, and was matching the car’s dashboard in a majority of the other cases. To be safe, always pay attention to the gauge that is showing you a lower level. We don't want you running out of gas!

As for the Fuel Range displayed in Automatic, we use the last 15 hours of current user’s driving data from the car to calculate the estimated range. Fuel range in car dashboards can fluctuate wildly based on road conditions like traffic, gradient etc but through our data research, we believe that the last 15 hours of driving is a very good representative number to calculate the range that can be expected when the current user drives the car over a period of time across different road conditions.
(Edited)

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