The province has made the Drive Clean emissions test $5 cheaper but that doesn't mean there aren't still calls for it to go.
On the election campaign trail, Tory leader Tim Hudak says he'd get rid of the now $30 test for cars. He claims it's just another program to keep bureaucrats busy.
NDP leader Andrea Horwath says she's willing to "deep six" a program that isn't working anymore. But she says she would have to look into if it's valuable.
The province underlines it reduces smog-causing emissions by 36 per cent each year. However, it has had its problems, with some cars never failing the test even if they technically should and newer cars being given the thumbs down.
Most major glitches in the test are believed to be fixed.
When the program was started in 1999, it wasn't supposed to make money. But fast forward to the end of last year and it has made $19 million in profits for the province.
The test is mandatory for cars seven years or older.