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Print 41 comment(s) - last by ptmmac.. on Mar 11 at 11:47 PM

Ford fails to deliver on promised efficiency again

If you're a fan of green vehicles or are shopping for car promising lots of fuel economy, you may be familiar with the Ford C-Max Hybrid and the Toyota Prius V. These vehicles are two of the most popular hybrids in the segment. Ford has been at the center of allegations from several publications that had reviewed the C-Max claiming that the vehicle does not meet the fuel economy promised.

Previously, the EPA had stated that it was ready to investigate Ford over allegations of improperly stated fuel economy numbers for its C-Max and Fusion Hybrid. A recent test conducted of the C-Max Hybrid and the Prius V by reviewer Wayne Gerdes found that the Ford C-Max didn't achieve fuel efficiency suggested by the EPA's numbers.

The EPA shows that the C-Max gets 47 miles per gallon in all three EPA test categories (city/highway/combined). According to Gerdes, in his testing the C-Max managed only 35.537 miles per gallon over 360 highway miles. However, he does admit that in the city he was able to achieve 52 miles per gallon over 22.8 miles of driving, which is better than the EPA promises.


Ford C-Max

He also tested the Prius V along the same driving route and achieved 40.768 miles per gallon on the highway and 55.8 miles per gallon in the city. That means while the EPA lists lower numbers for the Toyota (44/40/42) compared to the C-Max, it actually outperformed the C-Max.

Gerdes isn't alone in finding that the Prius V posted better real-world efficiency numbers than the C-Max, Motor Trend came to the same conclusion during its tests.
 
As with any review that tends to focus heavily on miles per gallon for hybrid vehicles, you have to have a saltshaker ready. Driving style and conditions greatly affect fuel efficiency numbers for hybrid and electric vehicles. That means the results from one person won't necessarily be the same for the next.
 
However, real world numbers from fuel economy conscious C-Max and Prius V owners on Fuelly back up the claims that the former lags far behind its EPA numbers while the latter hits them right on the mark.
 

C-Max Hybrid on Fuelly


Prius V on Fuelly

Sources: Autoblog, CleanMPG



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Reality check
By GatoRat on 3/1/2013 11:37:37 AM , Rating: 2
The EPA tests are extremely artificial (though not as lame as the British or European tests.) They have little to do with actual driving, but rather are contrived tests with few allowances for variation. The point of all of these is to offer a point of comparison, not to indicate what kind of mileage actual drivers would get.

I would like to see the tests revised to be more realistic, but ensuring they are consistent is a challenge.

(Back when my older kids just started driving, my daughter consistently got 10% worse gas mileage than me. When you drive with her you understand why--rabbit starts doesn't do justice for how she launches herself from stop lights.)




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