Fuel Economy Update for July - 2013 Cadillac ATS Long-Term Road Test

2013 Cadillac ATS Long-Term Road Test

2013 Cadillac ATS: Fuel Economy Update for July

August 2, 2013

2013 Cadillac ATS

In July, our 2013 Cadillac ATS returned to service after a two-week stay in the body shop. We responded with 2,100 miles, an oil change and a tire rotation. Editor Travis put half of those miles on the ATS during a road trip to Nevada City, while Editor Brent contributed his share through two weeks of combing Central California roads.

We achieved our best range (433 miles) and best MPG of the long-term test this month, with a 30.6 mpg average. On one hand, that's a pretty impressive number, compared against the ATS's EPA rating of 24 mpg in combined driving. On the other hand, most of the miles on that particular tank were open highway miles and not so impressive judged against the EPA rating of 31 highway mpg.

In fact, our ATS has been something of an underachiever, throughout the long-term test. We're averaging just 21.6 mpg in mixed driving, or about 2.5 mpg less than the EPA rating. While we understand that EPA ratings are often fanciful and idealistic, others actually buying the ATS perhaps won't be so forgiving.

Worst Fill MPG: 14.8
Best Fill MPG: 30.6
Average Lifetime MPG: 21.6
EPA MPG Rating: 24 Combined (21 City/31 Highway)
Best Range: 432.9 miles
Current Odometer: 11,733

Dan Frio, Automotive Editor


  • unionbuster unionbuster Posts:

    I have nothing but contempt for GM, this Cadillac, and anyone foolish enough to purchase one... but the ability to log 30.6 against EPA 31 hwy isn't bad.

  • jlh3 jlh3 Posts:

    What is wrong with 30.6 MPG on the highway? The EPA says you should get 31...The car is doing exactly what it is supposed to do. Is that disappointing?

  • jederino jederino Posts:

    Don't all these "high-performance" 4-cylinders get sub-par fuel economy? If you are going to make it scoot, get the correct displacement...

  • rmhpmi rmhpmi Posts:

    Seems to me the vehicle matched its EPA highway rating. We continue to blame the manufacturers when it is the outdated and totally unrealistic EPA test criteria that is the real problem.

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