Comparison: Plugin hybrid tailpipe and evaporative emission

I feel like you are hiding how bad the 49 state Volt really is by never comparing it to the Prius and the Karma. But maybe you were avoiding kicking them while they were down.

 

how about a normal small car like fiat 500.

 

How about the best selling car (camry?) and truck.

 

How about the CA SULEV Prius versus the ULEV Prius sold in other parts of the U.S.?

 

Interesting charts. Thanks for making them!

Can you post links to the underlying emission tests results?

One thing to keep in mind about the evaporative emissions is that the present diurnal tests include a "hot soak" meaning that the gas engine is run until hot and then a good chunk of the resulting emissions are due to the engine heat and emissions which escape from the exhaust system after the engine stops running.

Now that we have PHEVs like the PiP and Volt they really need a separate set of diurnal tests which do not include a hot soak in order to measure diurnal evaporative emissions on days when the car is run entirely on battery.

 

They are epa bin 3 in other states. We don't have warranty as part of our emissions levels test like CARB.

 

can you throw in a 300lb woman farting on a bicycle?

 

I've done the VO2Max test on the bike, but... they don't hook anything up to ummm.... the human tailpipe - just the mouth and nose. Can you find a fat woman to try it on?

 

Okay, I see them now. I guess I overlooked them earlier. Thanks!

So why does fueleconomy.gov list the Prius as having an emissions level of score 9 in California (PZEV) and 7 (bin 3) in Minnesota if the Prius has the same emissions in all 50 states?

http://www.epa.gov/greenvehicles/summarychart.pdf

 

PZEV is a California standard, it does not apply to non-CARB states. It is less clear why Toyota did not go for a Bin 2 classification, perhaps they had no Bin 8 vehicles to offset?