Only from the amount of resources used to make the motorcycle, and even then when you look at some manufacturing techniques the waste byproducts are potentially less environmentally friendly than building a small, economic car.
Motorcycle emissions are more toxic than car emissions, both lightly aged motorcycles and brand new ones. There simply isn't the space to install the scrubbers cars get for their emissions control on a motorcycle. One area which is focused on heavily in emissions testing is Oxides of Nitrogen and bikes produce between 5 and 30 times as much depending on how they are operated to a car of the same cc rating. A modern 1 litre car will make a litre sportsbike look like a burning oil refinery in terms of exhaust toxicity.
If you get into the emissions fight make sure you bring all the data to the fight and be happy to concede certain points or you may find yourself clutching a broken pencil while staring down the barrel of a howitzer.
The only "fight" that can be reasonably entertained is parking congestion. Bikes are already a lot more expensive to run than a car. Add parking to the cost of running one and the council risks forcing people on bikes into cars (most bikers I know won't entertain the thought of public transport) thereby increasing the demand for car parking spaces. That may well be the ultimate outcome they are after.
Bookmarks