Quote:
Originally Posted by redpoint5
The CAFE targets I'm seeing from the WIKI says passenger cars today should be getting an average of 45 MPG, light trucks 37, and heavy trucks 25. Don't know where you are finding the 23 MPG figure. The 2025 combined car/truck average is mandated at 54.5 MPG. My comments on bonehead regulators is based on these unobtainable figures. The gen IV Prius doesn't even meet this, let alone getting the average of all cars and trucks to meet this in 7 years.
https://en.wikipedia.org/wiki/Corpor...e_fuel_economy |
I'm talking about what a buyer will see on EPA window sticker not the completely unrealistic CAFE numbers. The attached chart is from your wiki link. Look at the bottom right corner to find a Ford F150 being required to get 23 mpg combined (EPA) in 2025
50.5 mpg CAFE in 2025 = 36 mpg combined on the EPA window sticker That makes the target seem a lot more reasonable doesn't it?
There is not a 54.5 mpg MANDATE in 2025. The 54.5 mpg was a TARGET set years ago when the EPA was expecting the car to truck product mix to be 67% car / 33% truck / SUV in 2025. Today the mix is almost opposite of that estimate so the CAFE requirement is lower.
Since 2007 there is no one CAFE requirement for all automakers. Instead CAFE requirements are set for each car or truck based on the footprint (Wheelbase x Track). Larger cars and trucks get lower requirements. At the end of each year each company has their own CAFE set based on the cars they actually sold. So CAFE is self-adjusting based on vehicle mix. (That is why a company like Fiat Chrysler can sell 90% trucks and SUVs today and not get hit with huge CAFE fines)
Three very important things are not discussed when the 2025 CAFE requirement are talked about in the media
1. CAFE mpg does not equal the mpg you will see on the EPA window sticker
2. CAFE requirements are self adjusting based on actual vehicle's sold
3. Each Automaker gets their own CAFE target.
EDIT: CAFE mpg and the EPA window sticker used to be the same. People complained that the mpg on the window sticker didn't come close to matching reality so is was adjusted down using a formula in 2008. People still complained that the mpg on the sticker didn't match reality so the EPA retweaked the formula and adjusted it down again in 2017.
MPG for CAFE is still based on the original unadjusted numbers. Automaker also get special bonus credits for things like hybrids, EVs and flex-fuel vehicles.