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Every gasoline car is going to put out more pollution in "real world" driving scenarios as well. This isn't a problem with diesels, per se, it's a problem with
by kinofcain 10y ago
Every gasoline car is going to put out more pollution in "real world" driving scenarios as well. This isn't a problem with diesels, per se, it's a problem with all emissions standards.
- JoeAltmaier 10y agoIts supposed to be 'built-in' to the emissions standard. The lab levels are so low, because that makes the road emissions in an acceptable range. Everybody involved knows this; its not a secret; there's no news here.
- kinofcain 10y agoYes, I was trying to figure out an eloquent way to add something to that effect to my comment, but I think you've done a better job than what I had drafted anyway. What would be interesting, is if diesels were predominantly more likely to exceed those lab levels than gasoline cars to a significant amount, or if they were exceeding those standards to an unexpected level. That's still possible, and it would mean we need to update the emissions standards and/or the test process, but this article doesn't make that case.
- _ph_ 10y agoThe problem is not, that in "real world" driving they exhaust some more (like 20%) but rather 10x (1000%) more than during those tests. That means, the pollution numbers are not just a bit "optimistic" like with fuel consumption, but completely unrelated to the real life numbers.