Montgomery County emissions
This is the page type that compounds your search surface. Each county route can expose distinct rules, exemptions, cost, and stations.
Rule snapshot
Testing requiredYes
Gas vehiclesGas vehicles starting at 1 years old • model year 1996 or newer
Diesel vehiclesDiesel vehicles are not subject to emissions testing
Average test fee$30.00
Coverage statusPartial
Exemptions
- newly purchased Maryland vehicles with original ownership are generally tested 72 months after titling and registration
- 1995 and older vehicles 8,500 pounds GVW and under
- historic vehicles
- street rods
- school vehicles and passenger buses
- all hybrid vehicles are tested
Known stations
- Gaithersburg 24/7 Self-Service Vehicle Emissions Testing Kiosk 15 Metropolitan Grove Road, Gaithersburg, MD 2087824/7 self-service kiosk
Ready to act?
Open the official Montgomery County testing workflow
PlateHarbor mapped the main county testing rules and finder coverage. Use the official source or locator before you schedule a test or travel to a station.
Official emissions program link
Source freshness
This county page is rendered from backend data and can be refreshed independently of the frontend deploy.
Coverage status: Partial
Official source: https://mva.maryland.gov/vehicles/Pages/veip.aspx
Last synced: Mar 9, 2026, 7:16 AM UTC
Coverage note
Core Maryland VEIP county coverage is source-backed, but the current normalized record does not fully model Maryland's 72-month original-owner exemption versus the immediate inspection schedule for many used vehicles.
Use this county via API
This same county dataset is also available as JSON for search agents, LLM tools, and direct integrations.
Direct request example
curl https://api.plateharbor.com/api/v1/emissions/maryland/montgomery