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Oh, here we go again..
Look at Euro VI regs.
Pollution in cities is down to congestion and old technology engines. It's always easier to drive personal agendas by bans, rather than reality.
If you're that worried, maybe you should sell your car & stop adding to it all? [/quote]
Do you work for a diesel engine manufacturer?
I agree that congestion has lot to do with it, but if that congestion is made up of vehicles with poorly tuned diesel engines it has to be a contributory factor.
I don't have a diesel engined car, I won't be giving up my car just yet, as I don't think the alternative is certain yet.
Perhaps the newest cars on the road do comply with what ever regulations the motor industry has set for it's self, that are only reproducible in a laboratory, and have no relevance in real world driving.