Starting today, owners of most cars, vans, SUV's and light trucks will no longer have to pay the 30-dollar Drive Clean test fee.
The province says it is also eliminating the requirement that light-duty vehicles be tested when they are resold.
However, owners of vehicles that don't pass the Drive Clean test will have to pay for any retests.
The province says vehicles are the single largest domestic source of smog-causing emissions in Ontario.