Need data on CO2 emissions for a 05 Prius

Use the mpg ratings given for the US car and convert into l/100km. Every liter converts to around 24.x g CO2. The european car scores 4.3l/100 km, which translates to 104 g.

Bonus points if Toyota has NEFZ-tested the US car, otherwise you might have to discuss the comparability of the US EPA cycle with the european NEFZ cycle.

cu .\\arc

Thanks for your suggestion Marc. The problem is the US data is in tons CO2/year (?) which is quite meaningless. I can't find out how many miles are in a year. And I need something official. What is the NEFZ test? It is the european equivalent of the EPA emissions limits?

Kirsten

Hmpf. Tons/year is a ridiculous measure. Let's put the car into storage and watch it emit :-)

The NEFZ is the european standard driving cycle used to measure consumption, it involves a car driving for a certain time, accelerating and holding speed following a given pattern. What fuel consumption is measured is the 'official' consumption. The EPA cycle is its american equivalent. The cycles are somewhat different in speeds obtained and driving pattern, but close enough for most purposes.

If you can get fuel consumption in a dependable manner, you can convert that into CO2 emissions and be done.

Otherwise, I'd try to argue by comparing the technical details of the drive train to the european model and pointing out there's no difference that would influence consumption.

cu .\\arc

Now there is an idea that might work. I had to take the car down to the "traffic station" where they do all their measurements. They had to weigh it themselves: American cars fall into a special category. They don't believe any of the data coming from the US. I was flabbergastet when they said they couldn't measure CO2 because they have all the instruments and hoses to hook up to the exhaust so they can tell you if your car pollutes too much. The customs office here is just like in the US, they can basically do what they want. When I tried to argue, their reasoning always goes back to: cars from the US fall into a special category. Now how can you argue with that! I am not sure if one can get the CO2 data from the mileage because the catalytic converter effects the outcome.

Kirsten

:-)

It does make sense that they can't measure, it's not trivial to measure CO2. CO2 is not really a polluting agent, it's just a product of the gas burning in the engine.

Yes, one can, with sufficient accuracy. Everything coming out of the reaction that is not CO2 or water is mainly the difference between a theoretically perfect reaction and reality - in percentage it's very, very minor. 99+ % of the fuel consumption results in CO2 (and water).

The reason to look for CO2 emissions instead of measuring consumption is that different fuels will react to different amounts of CO2, so CO2 emissions will allow for comparability e.g. between gas and diesel cars.

Good luck with your Prius and customs, I know what a pain this can be.

cu .\\arc

You may also want to ask on:

(pan-Europe group,mainly English-language) (Nordic group,mainly Swedish-language) Meanwhile, the official MPG ratings using the US EPA fuel economy tests are: that different countries use different tests... strangely, theUS EPA tests are the most stringent...)Which lists the 2005 Toyota Prius at 48mpg city/45mpg highway/46mpgcombined. They estimate 4.00 tons of CO2 per year, using the GREET model for the full fuel-cycle.

Annual Fuel Costs and Greenhouse Gas Estimates are based on 45% highway driving, 55% city driving, and 15000 annual miles. .... GHG-Greenhouse gas emissions expressed in CO2 equivalents. Estimates include the full fuel cycle and exclude vehicle manufacture. (U.S. Department of Energy, GREET Model, Argonne National Laboratory)

So, that's 46mpg average, 15000 miles in a year, 4.00 tons of CO2 in a year

4.00 tons of CO2 = approx. 4.00 short tons = 3 628 738.96 grams (google calculator) 3 628 738.96 grams / 15000 miles = 241.915931 g/mile 241.915931 g/mile * 1/1.609344 miles/km = 150.31959 g/km

On searching the 'net, I see reports of anywhere from 23 to 32 as the multiplier to convert l/100km to grams of CO2 per km for a litre of gasoline/petrol, but 24 seems more common.

46 US MPG = approx. 5.1130434 l/100km 5.11 l/100km * 24 (unit?) = 122.64 g/km

I'll note that hybridsynergydrive.com is an official Toyota site. the page that you listed,

is specific for the Toyota Prius.

Meanwhile, I'll have to ask - why are you importing your US Prius into Norway? Not only do you have the duty/customs problems, but any warranty is gone in Europe, and you will not be able to source parts if you have any problems. (For example, European Prius do not have the North American emissions system (such as the bladder fuel tank), nor the rear drum brakes (European Prius have rear disc brakes). European Prius also have a different wheel size and suspension, similar to the 2007-current US Touring Edition Prius. If you have navigation, you will not be able to get a new DVD that'll work...) Financially, it is usually easier to sell your US Prius in the US (high resale), and then buy a new Prius in Europe when you're there, than to import. (it's also difficult to sell a US spec car in Europe, too.)

This was alot of good info. Maybe it will work. It is strange, however that the European Prius has lower CO2 emissions than the US one (104 g/km). I am importing the Prius because we have owned it for 1 1/2 years and I am very happy with it. I did not want to spend the time and energy looking for another one here and the same model runs for $45,000 so I am saving about $10,000 when all is said and done. We are not planning to sell it, ever. Cars are too expensive here. And the market for a used prius in Houston is not good. When I bought this one, it had been on the lot for 6 months (and they had 2 more!) so I would have lost some money there. I wasn't aware that they were so different. They are made in the same factory and my dealership here didn't seem to think that parts and such would be a problem. We don't have a GPS and there is a button to convert to km/hr. It doesn't convert the odometer, however, just the display.

Kirsten

While it is not the answer I was looking for, I received an e-mail from Toyota headquarters stating that the conversion I am looking for does not exist. I guess I will just pay the money then and start driving my car! )after I replace the headlights...

Kirsten