Anything made in/before 1986 I believe. In CT USA, any vehicle 25 years old or older is exempt.
I think it has to do with Height and Weight rather than age
Taxes on cars are a matter of state and local law. It would depend on the state and locality.
This depends on where you live Where I am yes it exempt now
In CT USA it is exempt.
A new catalytic converter will help to reduce your car's emissions, you can also take your car to a local garage and have them perform tests on it to see how else emissions can be reduced
It means that the milage is exempt. A car must be 10 years old or older for miles to be exempt.
When it runs on batteries.
No. The muffler is a passive component in the exhaust emissions system.
Yes if it is emissions related.
The same as in any car.