2013 Cadillac ATS Long Term Road Test

2013 Cadillac ATS: Fuel Economy Update for December

January 6, 2014

2013 Cadillac ATS

In the month of December, our long-term 2013 Cadillac ATS spun an additional near-1,100 miles onto its odometer and consumed 49.5 gallons of 91-octane fuel. That equates to 22.1 miles per gallon for the month, which is almost bang-on its lifetime average of 22.2 mpg.

As of December, we've also cleared 20,000 miles in this entry-level luxury sport sedan, so we've got a comprehensive sample set for its fuel economy characteristics. We're trailing its EPA combined mpg by 1.8 mpg.

Jason Kavanagh, Engineering Editor

Worst Fill MPG: 12.6
Best Fill MPG: 30.6
Average Lifetime MPG: 22.2
EPA MPG Rating: 24 Combined (21 City/31 Highway) 
Best Range: 432.9 miles
Current Odometer: 20,596

Note: Cars are sometimes refueled before their fuel tanks are nearly empty. As such, "best" and "worst" fuel economy entries above are not necessarily the result of an entire tank's worth of driving.


  • stovt001_ stovt001_ Posts:

    Despite what the caveat at the bottom says I have a hard time believing any car in the LT fleet is filled up before the tank is down to the last few drops. The editors have a well documented hatred of leaving a safety and comfort buffer, not to mention keeping the fuel pump submerged.

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