The maximum fee for a light-duty vehicle test or re-test is set by Drive Clean. The most that you can be charged is $35, plus applicable taxes for the test.If your vehicle fails to meet emissions standards, the maximum fee for a re-test after repairs is set at $17.50, plus applicable taxes.You are entitled to two re-tests at the $17.50 rate, if they are performed at the Drive Clean facility where the initial test was conducted.he maximum fee for a light-duty vehicle test or re-test is set by Drive Clean. The most that you can be charged is $35, plus applicable taxes for the test.