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> A 2007 2L Passat Turns out my SO got her hand on a second hand '06 New Beetle which has a TDI engine with a CO2 production of ~146g/km. The car has 300000km
by lloeki 8y ago
> A 2007 2L Passat
Turns out my SO got her hand on a second hand '06 New Beetle which has a TDI engine with a CO2 production of ~146g/km. The car has 300000km on the clock.
> 600 kg co2
How did you get there? I seem to miss something to make sense of this value.
Over the 12 years the car has been on the road it emitted:
300000 km * 146 g/km => 44 metric tons
The equivalent engine today is the 1.6L BlueMotion and emits ~85g/km. That's 40% less, about 18 tons saved.
But such a churn is quick at first yet soon enough has diminishing returns, as the low hanging fruits get reaped until we reach minimal ICE emissions or even zero emission, then (environmentally) you'll soon want the longest living cars, so this phenomenon should only be temporary.
- llampx 8y agoIts not only about tons of CO2 saved, since that can be fixed by trees. Asthma-causing particulates and other cancer-causing compounds are completely ignored in that calculation, not to mention the opportunity cost of not having that $25k go into something else, like a house.
- lloeki 8y agoI agree, but: - the point was about whether changing cars every 5-10 years offsets the cost of building a new car - whatever the car you can still plant the same trees - living near a heavily polluted crossroad in a city, I guarantee you I'd rather have less CO/CO2 (as well as all the other NOx/particles crap) right out of the exhaust, not captured over decades
- llampx 8y agoMost of that pollution is coming from diesel engines in the form of particulates. Which the EU happily allowed so as to reduce CO2 emissions. Which they're backtracking heavily on at the moment. Not to mention that cars by themselves are a very small part of overall pollution today, compared to good transportation and factories.