Superior Auto Service

Superior Auto Service, 12298 Wilkins Ave, Rockville, Maryland 20852, handles Maryland state safety inspections as part of emissions testing. They offer OBD‑II diagnostics and emissions repairs and provide clear estimates with photos. Hours are 7 am to 6 pm weekdays. Customers praise honest pricing, fast service and shuttle options to the metro. The shop serves passenger cars and supports out‑of‑state customers.

Auto repair shop

Test and Repair

Rockville, MD

Contact

Address 12298 Wilkins Ave, Rockville, MD 20852, United States

Phone +1 301-770-6662

Website http://superiorautoservice.com/

Hours

Monday 7 am–6 pm

Tuesday 7 am–6 pm

Wednesday 7 am–6 pm

Thursday 7 am–6 pm

Friday 7 am–5 pm

Saturday Closed

Sunday Closed

Services

Station Type Test and Repair

Test Types

OBD-II Tailpipe

Vehicles Served

Passenger Cars

Languages English

Practical Information

Appointments Recommended

Typical Wait Over 1 hour

Pricing $105

Payment

Cash Credit Card Debit Card Check

Rating

4.8 / 5

Based on 355 reviews

4.8 / 5

Emissions Testing rating (70 reviews)

Location

Rockville, Maryland

More stations in Rockville

What Customers Say

Friendly Staff Knowledgeable Easy Process Fair Pricing

Speed: Fast

Pass Rate

Standard

Based on customer review sentiment

Making the Most of Your Visit to Superior Auto Service

Choosing the right emissions testing station in Rockville, Maryland can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. Superior Auto Service is one of the licensed emissions testing locations in the area, and preparing properly before your visit can make the process smoother.

Understanding Maryland Emissions Testing Requirements

Emissions Testing rules in Maryland vary by vehicle type, registration ZIP code, and model year. Since requirements can differ even within Rockville, confirm what applies to you before heading to Superior Auto Service. Our Maryland Emissions Testing guide outlines current rules, exemptions, and testing intervals.

Before Your Emissions Testing

To help make your emissions testing quick and successful, consider preparing the following:

Confirm your registration address requires testing.
Ensure your check engine light is off and no recent codes have been cleared.
Warm up your vehicle by driving 10 to 15 minutes before testing.
Bring your registration or renewal notice and a valid photo ID.

Why Reviews Matter

Customer experiences can vary, so reading feedback from other drivers can help you understand what to expect. Superior Auto Service currently has 355 reviews with a 4.8 out of 5 rating, which can provide insights into service quality, wait times, and professionalism.

Visit Checklist

1

Verify Certification

Ensure Superior Auto Service is an active, licensed emissions testing station in Maryland.
2

Check Reviews

Read recent customer feedback from other Rockville drivers to understand typical wait times and service quality.
3

Confirm Services

Call ahead to confirm the types of tests offered. Appointments are recommended but walk-ins may be accepted.
4

Bring Required Documents

Have your registration or renewal notice, ID, and any required paperwork ready when visiting the station.
5

Ask About Retest Policies

Some stations offer discounted or free retests if your vehicle fails. Ask for details up front.

* This guide is for informational purposes only. Always confirm emissions testing requirements and policies with your local Maryland authorities.

FAQ

Common questions

Have a question not covered here? Contact us and we will respond within one business day.

Where is Superior Auto Service located?

Superior Auto Service is located at 12298 Wilkins Ave, Rockville, MD 20852, United States in Rockville, Maryland.

What services does Superior Auto Service offer?

Superior Auto Service is categorized as a Auto repair shop and operates as a Test and Repair station offering OBD-II, Tailpipe testing for passenger cars.

Does Superior Auto Service provide Emissions Testing?

Yes, Superior Auto Service provides Emissions Testing in Rockville, MD. Available test types include OBD-II, Tailpipe.

What are the hours for Superior Auto Service?

Superior Auto Service is open: Monday 7 am–6 pm, Tuesday 7 am–6 pm, Wednesday 7 am–6 pm, Thursday 7 am–6 pm, Friday 7 am–5 pm, Saturday Closed, Sunday Closed.

How can I contact Superior Auto Service?

You can reach Superior Auto Service by phone at +1 301-770-6662, online at http://superiorautoservice.com/, or by visiting 12298 Wilkins Ave, Rockville, MD 20852, United States.

Do I need an appointment at Superior Auto Service?

Superior Auto Service recommends scheduling an appointment but also accepts walk-ins. Contact them directly to confirm availability.

How long does Emissions Testing take at Superior Auto Service?

Typical wait time at Superior Auto Service is Over 1 hour. Customers generally describe the service speed as Fast.

How much does Emissions Testing cost at Superior Auto Service?

Pricing for Emissions Testing at Superior Auto Service is typically $105. Contact them directly for exact pricing.

What payment methods does Superior Auto Service accept?

Superior Auto Service accepts Cash, Credit Card, Debit Card, Check.

What do customers say about Superior Auto Service?