What Delaware requires for vehicle inspection

Delaware requires a vehicle inspection sticker before you can register a vehicle or renew your registration. The inspection covers your brakes, lights, windshield wipers, horn, steering, suspension, and emissions (for vehicles model year 1996 and newer). You cannot legally drive without a current sticker, and you cannot register a vehicle without one.

The inspection is not performed by the DMV itself. Instead, you take your vehicle to a private inspection station licensed by the Delaware Division of Motor Vehicles. These stations are scattered across the state — gas stations, repair shops, and dedicated inspection centers all perform them. The inspection costs between $15 and $20 depending on the station.

Your inspection sticker is valid for one year from the month it is issued. If your sticker expires, you must get a new inspection before you can renew your registration. Delaware does not offer a grace period — an expired sticker means your vehicle is not legally registered.

Key Takeaways

  • Delaware inspections are performed at private licensed stations, not at DMV offices, and cost $15 to $20.
  • Your vehicle must pass inspection on brakes, lights, wipers, horn, steering, suspension, and emissions before you can register it.
  • The sticker is valid for exactly one year from the month of issue, with no grace period for renewal.
  • You can find licensed inspection stations through the Delaware DMV website or by calling your local DMV office for a list.
  • Vehicles model year 1996 and newer must pass an emissions test as part of the inspection.

Finding a licensed inspection station in Delaware

The Delaware Division of Motor Vehicles maintains a list of all licensed inspection stations on its website. You can search by county or by the type of station — repair shop, gas station, or inspection-only facility. The list includes the station's address, phone number, and hours of operation.

If you do not have internet access, you can call your local DMV office and ask for a list of stations near you. The three main DMV offices are in Wilmington, Dover, and Georgetown. Staff can tell you which stations are currently open and which ones have shorter wait times.

Many inspection stations operate on a walk-in basis, but some require appointments. Call ahead before you go, especially during peak times like the end of the month or the weeks before registration renewal important date. Some stations close for lunch or have limited evening hours.

What happens during a Delaware vehicle inspection

When you arrive at the station, bring your vehicle keys and your current registration or proof of ownership. The inspector will perform a visual check of your brakes, lights (headlights, taillights, brake lights, turn signals), windshield wipers, horn, steering wheel play, and suspension components. This takes 10 to 20 minutes on average.

For vehicles model year 1996 and newer, the inspector will also plug a diagnostic scanner into your vehicle's onboard computer to check for emissions-related faults. This is not a tailpipe test — it reads your vehicle's computer for any emissions system problems. If your check engine light is on, the vehicle will fail this part of the inspection.

If your vehicle passes all checks, the inspector will issue a sticker and record the inspection in the state system. You will receive a paper receipt showing the inspection date and expiration date. The sticker itself goes on your windshield, usually in the lower driver's side corner.

Common reasons vehicles fail Delaware inspection

The most frequent failure is a check engine light or emissions system fault. This can be caused by a loose gas cap, a faulty oxygen sensor, a catalytic converter problem, or other engine management issues. If your check engine light is on, have it diagnosed before you go to inspection.

Brake system failures happen when pads are worn below the legal minimum thickness, brake fluid is leaking, or the brake pedal feels soft or spongy. Lights fail when bulbs are burned out, lenses are cracked, or wiring is corroded. Windshield wipers fail if the blades are torn or missing, or if the wiper motor does not work.

Steering and suspension failures occur when there is excessive play in the steering wheel, when shock absorbers or struts are leaking or damaged, or when ball joints are worn. These are more serious issues that usually require a repair shop visit. If you fail inspection, the station will give you a written report of what needs to be fixed.

Retesting after a failed inspection

If your vehicle fails inspection, you have 30 days to have the problems fixed and return to any licensed inspection station for a retest. You do not have to return to the same station. The retest costs the same as the original inspection — $15 to $20.

During the 30-day window, your vehicle is not legally registered, so you cannot drive it except to take it directly to a repair shop or back to the inspection station. If you need to drive it for repairs, some stations will issue a temporary permit, but this is not may provide — ask when you receive your failed inspection report.

Once you pass the retest, the new sticker is valid for one year from the date of the retest, not from the original failed inspection. Keep your receipt from the retest so you have proof of the inspection date if the DMV questions your registration.

Inspection requirements for different vehicle types

Passenger cars, SUVs, and light trucks all follow the same inspection rules. Heavy trucks (over 10,000 pounds gross vehicle weight rating) have a separate inspection process that includes additional brake and structural checks. Motorcycles are inspected for lights, horn, brakes, and steering only — they do not have an emissions test.

Trailers and RVs have their own inspection categories. A utility trailer may only need lights and brakes checked, while a travel trailer or motorhome follows the same rules as a passenger vehicle. Ask the inspection station which category your vehicle falls into if you are unsure.

Vehicles that are more than 25 years old are exempt from the emissions portion of the inspection, though they still must pass the safety checks. This applies to classic cars and antique vehicles registered under Delaware's historic vehicle plates.

Timing your inspection around registration renewal

You can get an inspection up to 60 days before your registration expires. This means you can renew your registration as soon as you have a passing inspection sticker, even if your current registration has not yet expired. Many people do this to avoid a gap between when their old sticker expires and when they get a new one.

Your registration renewal notice will show your expiration date. Plan to get your inspection at least two weeks before that date to give yourself time to fix any problems if you fail. If you wait until the last week, you risk running out of time to get repairs done and retested.

If your registration has already expired, you must get an inspection before you can renew it. You cannot legally drive the vehicle during this time. Once you pass inspection, you can renew your registration online, by mail, or in person at a DMV office.

Frequently Asked Questions

Can I get an inspection if my vehicle has a check engine light on?

No. The inspection includes a computer diagnostic scan, and any check engine light will cause an automatic failure. You must have the problem diagnosed and repaired before you can pass inspection. Many auto parts stores will read the code for free to help you identify the issue.

What if I move to Delaware and my vehicle was inspected in another state?

Out-of-state inspection stickers are not valid in Delaware. You must get a Delaware inspection before you can register your vehicle in the state. However, you have 30 days from the date you establish residency to complete the inspection and register your vehicle.

Do I need an appointment at an inspection station?

Most stations accept walk-ins, but some require appointments, especially during busy seasons. Call ahead to confirm hours and whether you need to schedule. Even walk-in stations may have wait times during the end of the month or before registration renewal important date.

What if my vehicle fails inspection and I cannot afford the repairs?

You have 30 days to make the repairs, so you can save money and have the work done gradually if needed. Some repair shops offer payment plans. If the repairs are very expensive, you may want to get a second opinion from another shop before proceeding.

Can I transfer my inspection sticker to a different vehicle?

No. Inspection stickers are tied to a specific vehicle and cannot be transferred. If you sell your vehicle or buy a new one, the new owner or you will need a separate inspection for the new vehicle.