Would you report a neighbour's untaxed car if it was just parked on the street?

Posted by hassan_26@reddit | AskUK | View on Reddit | 56 comments

The neighbour's car has been parked there for months and I just checked that it's untaxed and has no MOT. Its taking up a parking space. Will it cost them anything if I reported it? I don't want to cause undue stress or financial hardship.