EPA Releases 2017-2025 CAFE Proposed Rule

Edward Niedermeyer
by Edward Niedermeyer

Over the last few days we’ve been discussing the implications of the growing gap between global oil demand and production, looking at the responses of a global automaker, a radical startup and the oil industry itself. And make no mistake, it’s an uncertain future out there… unless you’re selling cars in the US. In that case, your future just arrived, planned all the way through 2025. That is, if you think this proposed rule will survive four presidential elections and one industry-government “mid-term review.” Want to familiarize yourself with this pre-planned fuel economy future? All 893 pages await your perusal, in PDF format here. Or, hit the jump for a few broad strokes.

So, what does this mean for specific classes of cars? According to an EPA factsheet ( PDF here), this is how cars in the year 2025 will have to perform:

How about trucks?

Now that may seems scary, but you have to remember that these numbers are not comparable to the EPA’s “window sticker” numbers. For inexplicable reasons, probably having to do with the political benefits to both industry and politicians of making the number seem higher than it is, NHTSA’s CAFE fuel economy uses a different test than the EPA. Edmunds Autoobserver covered this issue well a few years back, but the upshot is that a 2025 full-size pickup will be required to get a window sticker of around 25 MPG combined, not 33 MPG. Still tough, but considering that full-sizers are getting over 20 MPG on the freeway already, this does not seem like a hill that can’t be climbed in a decade or so. Especially when you can slap a hybrid drivetrain in there and get a 20 grams of CO2 per mile credit.

Of course these standards will cost consumers. The EPA estimates that the proposed rule will add some $2,000 to the price of each vehicle on average, but insists

Those consumers who drive their MY 2025 vehicle for its entire lifetime will save, on average, $5200 to $66003 (7 and 3 percent discount rates, respectively) in fuel savings, for a net lifetime savings of $3000 to 44004 — assuming gasoline prices remain at essentially current levels. For those consumers who purchase their new MY 2025 vehicle with cash, the discounted fuel savings will offset the higher vehicle cost in less than 4 years, and fuel savings will continue for as long as the consumer owns the vehicle.

Of course if gas prices aren’t kind enough to “remain at essentially current levels,” those fuel savings could be wiped out… but then, if gas prices rise too precipitously, this entire rule could become moot. The future is notoriously resistant to our mortal plans…


Edward Niedermeyer
Edward Niedermeyer

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  • Brettc Brettc on Nov 17, 2011

    So with the references to g/mi and MPG in 2025, it looks like the EPA is assuming that no matter who the president is, no president will have the balls to continue with full metrication in the US? (We don't need none of them commie base 10 units of measure!) Anyway, I sure hope this means more diesel options. But of course when the EPA has their say, clean diesel just means more expensive emission components to break and lower economy. I'm sure the manufacturers will figure out ways to do it, but it'll be interesting to see how they manage to do it. That is if any of these numbers are actually the same in 2025.

  • Steven02 Steven02 on Nov 17, 2011

    I don't know how you consider tough, but here are the numbers the way I see them. The best non-hybrid full size truck combined MPG is 19mpg. That is the V6 Ford F150 3.7L. Best V8, GM 5.3 XFE with 18mpg combined. 19mpg to 25mpg is a minimal of 32% overall improvement. 18mpg to 25mpg is a 39% improvement. My guess is that trucks are going to become a lot less capable in the next 10 years, be made of different materials, and all have hybrid technology. Will be interesting to see how much they cost, weigh, and tow in 10 years.

  • Probert No, they're not the future. BEV sales are growing every year, and, along with sound energy policy, result in cleaner air, lower CO2, foreign policy not based on oil, and will continue to drive like a smooth powerful nearly silent turbine. Some 19% of new car sales in 2023 were BEVs - this will continue.
  • Mishab Agree with you. Thanks for sharing this insightful update about the upcoming Mini Cooper models! It's fascinating to see Mini's shift towards electrification and the unique design elements they're incorporating into the new John Cooper Works edition.Speaking of Minis, if you're a Mini Cooper owner in Sharjah looking for spare parts or considering common repairs, you might find this article on 7 common Mini Cooper repairs quite useful. ( for reading it). It covers some of the typical issues Mini owners might encounter and offers valuable insights into maintaining these iconic cars.Looking forward to more updates on Mini's electrified lineup and the exciting changes they're bringing to the automotive industry
  • Redapple2 Love/lust a 110 diesel defender. Should buy one since the INEOS is gas only (and double the price). Had a lightweight in Greece. Wonder how this rides.
  • Ajla There is inventory on the ground but as pointed out it is generally high dollar trims of high-dollar models and at least around here dealers still aren't budging off their mandatory nitrogen tires and Summer weather protection packages.You aren't paying '21-'22 prices anymore but it's still a long way to go.
  • Slavuta Every electric car must come with a film about lithium mining
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