Truett writes that, at least for policymakers in North America and Europe, the advantages of adopting uniform standards on CO2 and NOx emissions for gasoline and diesel engines just aren't there yet. But there would be clear business strategies that automakers would gain from a single standard, to say nothing of the climate change implications. Truett points out that a global set of rules would likely lower component costs because of higher production and simplified manufacturing processes. Bob Lee, head of engine, powertrain and electrified propulsion systems engineering for Chrysler Group, put in his two cents on the issue. The variation in the international standards taps into engineering resources and slows down the development process, which drives up costs. "The impact of disparate emissions and fuel-economy standards is one of the industry's best-kept secrets," Lee said.
"The impact of disparate emissions and fuel-economy standards is one of the industry's best-kept secrets."
There's a lot to think about here – such as whether global automakers really want tough emissions standards at all - so check out the article for more on a question that really needs to be answered more often.