this post was submitted on 02 Jun 2026
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Euro 3 went into effect in 2007, nearly all bikes made in the last 20 years have cats.
As far as combustion goes, there's way more variability between a nc750 revving to 6500, a Ducati reving to 16500, and a Honda Wave with 110ccs displacement. You can probably get a lot of answers.
Even the worst, most pollution inducing motorcycle on the planet doesn't hold a candle to my 90s truck.
Hell, even most modern trucks are better despite being massive, considering the improvements to fuel efficiency and such...
Arguing a motorcycle is worse because one specific area of its carbon footprint is slightly higher than cars depending on model of both is weird to me.
And I don't remember the last time I saw a motorcycle without the obvious cat hugging the engine before it winds to the muffler. Note: usually the motorcycles I get to see close are people who are more environment conscious than your average redneck. I'm sure the shop down the road specializes in removing them. I KNOW they offer "diesel tuning services" to let people "roll coal" so it wouldn't surprise me...
I saw a few in Osaka, but yeah its quite rare even on 90s bikes.
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