If you need your car's emissions tested before you get your license plate renewed, you should consider taking care of this chore well in advance just in case your vehicle doesn't pass the emissions inspection. For example, a car that has its check engine light on may not pass. Have that issue checked first, and then take care of your car's emissions test. You can have testing performed and documented at many local auto shops and service stations. Giving Assistant understands the importance of testing and wants to help with our great selection of coupons and promo codes for emissions-related expenses.