The state of Delaware requires emissions testing on vehicles of Delaware residents.  There are many common questions that residents have about the Delaware emissions testing program and this section will look at some of the most frequently asked questions and their corresponding answers.

Can I apply for a waiver and if so, how?

There are certain criteria that must be met in order for a resident to apply for a waiver in regards to their vehicle’s emissions test.  Waivers are granted not to excuse a vehicle from an initial test, but for vehicles that have failed multiple tests even after repairs have been made on the vehicle to fix the issue found during the emissions inspection period.  In order to receive a waiver the following conditions must be met:

1.  Your vehicle must have failed the emissions inspection at least 2 times or more.

2.  The parameters of your vehicle’s engine are set to the specifications determined by the vehicle’s manufacturer.

3.  You have spent above a set limit in repairs on the vehicle in regards to items repaired specifically for emissions purposes.  If your vehicle is from 1981 or newer the threshold that must be reached is $810 in repairs.  Vehicles manufactured prior to 1981 have a threshold of $75 in repairs.

4.  The reasons for the emissions inspection failure was not due to visible smoke or missions emissions control equipment.

When you present the waiver application to the DMV you must have all the receipts for the repairs you had done along with the vehicle inspection reports from your failed emissions tests.

Who sets the emissions standards for exhaust levels?

This exhaust levels set for the emissions inspection are set by the Department of Natural Resources and Environmental Control.

How much does emissions testing cost?

In the state of Delaware, residents get their vehicle’s emissions tested for free.

How often do I need to get my vehicle’s emissions tested?

Vehicles are required to get their emissions tested once every two years.  You must get your emissions tested before you are able to renew your vehicle’s registration.

How will I know if I need to get my emissions tested?

The DMV will send you a registration renewal notice about ninety days prior to when your current registration will expire.  At this point you should begin to consider getting your emissions tested.