Link: INDEPENDENT online.
The public can report any vehicle emitting noxious fumes by sending an SMS with the vehicle registration number to 50611899. Each sms costs 2c for both Vodafone and go mobile subscribers.
Over 52,000 text reports have been filed since August 2004! I would use this if they had it in the UK. It’s such an annoyance to be driving behind a vehicle that clearly needs to get its exhaust system looked at. Even worse if you’re a member of the public and having to beathe it all in as you’re walking along.