The Basics Behind Engine Diagnostics Services atGlenn Dale, Tire, Auto & Roadside Assist Auto Services
The OBD System, or On-Board Diagnostics System, was originally installed to monitor vehicle emissions, but it also detects problems within the engine. Both OBD I and OBD II systems exist, with OBD II systems becoming the standard in vehicles manufactured after 1996. The OBD is connected to the engine control unit (ECU), which helps your engine run efficiently while keeping emissions low. The OBD can identify and warn the driver of engine malfunction by sending error notifications to the ECU system. The ECU is in charge of several engine processes, including the mixture of air and fuel, emissions, and engine timing. The ECU uses sensors to monitor them or make adjustments. If the ECU detects malfunctions, it triggers the “check engine” light on the dashboard. The OBD system then records the code pertaining to the problem. The code can be accessed by a trained technician through engine diagnostic equipment in order to properly diagnose the issue.
Why Should You Have Engine Diagnostics Services Performed atGlenn Dale, Tire, Auto & Roadside Assist Auto Services?
Engine diagnostics serve to keep your engine running efficiently. The OBD system is capable of detecting malfunctions before they lower engine performance or cause severe damage. Because of the mandatory OBD system, your automobile is capable of monitoring and diagnosing its own performance. You should have engine diagnostics performed when the “check engine” light comes on. Engine diagnostics will help detect problems early so that minor problems never become major problems. Engine diagnostics also help keep emissions low, and if your engine is malfunctioning, your vehicle might not pass an emissions test. When your “check engine” light turns on, it is time for you to contact us for an engine diagnostics service. Our experienced staff will work hard to get your engine working again properly in no time.
We proudly service the Engine Diagnostics needs of customers in Greenbelt, MD, College Park, MD, Glendale, MD, and surrounding areas.
Complete Auto Repair Manufactured Service
We handle the whole gamut of auto mechanical repairs. You can rely on us whether you need a straightforward oil change, brakes, tires or diagnostics on a rarely occurring engine problem.
Technology
- We use the latest Computerized Equipment
Customer Friendly
- Diagnostics & Estimates
Reliable Service and Parts
- 12 Month / 12,000 Mile Warranty
Affordable Prices
- Best Prices in College Park and Surrounding Areas
Quick & Flexible
- Same Day Service. No Appointment Necessary
Accessible
- Easy access from Route 50, the BW Parkway (MD 295), and the Capital Beltway (I-495)
Convenient
- Free Local Uber Drop Offs
Verified
- Top AAA Approved Shop in College Park, MD
Extended Warranty
- Ask about our nationwide extended warranty

Frequently Asked Questions
Do Not Choose Your Shop By Accident! We Pledge From The Moment You Walk In To Our Facility, Until You Leave, You Will Be Worry Free & Protected With The Best Warranty In The Business!
Where is Glenn Dale Tire & Auto, Roadside Assistance located, and what areas do you serve?
We are located in Glenn Dale, Maryland and serve the Northern Virginia and DC areas. Our experienced mechanics perform a variety of repairs, including engine diagnostics, brake repairs, preventive maintenance, wheel alignments, and transmission work. We are also a clean emission testing and repair center, as well as a heavy-duty emissions testing center. Our shop can accommodate a variety of fleet vehicles too.
Can I wait while my automobile is serviced?
Yes, you can. We encourage our customers to arrive at the beginning of the workday, but we understand that your schedule doesn't always permit an early arrival. For those times, we offer a customer lounge that includes wireless internet, television, and refreshments. Please let us know when you make an appointment if you prefer to wait.
What transportation options are available if I cannot stay while my vehicle is serviced?
If a family member, friend, or coworker is unavailable to assist you when you are leaving your car, we can recommend rental car options or transportation services like Uber or Lyft. College Park Metro is also less than a 5-minute walk from our shop.
Do you offer a warranty/guarantee on your work?
Yes, we do. You will be given a 12-month/12,000-mile warranty on our labor. All parts are guaranteed as per the manufacturer’s warranty for each specific part.
What vehicles do you work on?
We work on all makes and models of domestic and foreign standard passenger cars and trucks.
How do I keep track of routine maintenance?
We recommend keeping a maintenance schedule to plan for services that prolong the life of your vehicle, reduce vehicle failures, and gain peace of mind. If you prefer, we can maintain the schedule for you.
How do I know when my car needs a tune-up?
You should bring your car in for a tune-up if you notice any abnormal sounds or odors, a lack of efficiency, or general rough riding. The most common signs include the check engine light coming on, stalling engine, vibrations throughout the vehicle, pulling, or worsening fuel mileage.
What is preventive maintenance?
Preventive maintenance and car tune-ups help reduce the chance of your vehicle unexpectedly breaking down. We recommend regular oil changes, spark plug checks, fluid checks, belt and hose inspections, alignments, tire rotations, and consistent brake and light checks.
What parts should be replaced at what intervals?
Your owner’s manual provides all necessary information regarding what parts to replace and when to do it. Read it thoroughly and note any exceptions or severe service notations. Warranties are there to protect the consumer, but you must follow the requirements. If you have questions about warranties, please contact us.
How can I receive an estimate?
You can schedule your free estimate by filling out a form on our website or by calling us at +1 (301) 699-0001.
Customer Testimonials
We stand by our work.
The owner John is very knowledgeable and the whole staff is friendly. I came for an oil change and to have my tires serviced (rotation, alignment and balance) because I thought they needed it. John told me I didn’t need service to my tires and they rode very well; no need to spend the money on a service that wasn’t needed. We all know many establishments would try to push a service for a dollar so his honesty is appreciated. Reasonable pricing and great service. Highly recommend! Services: Tire rotations, Oil change
Ashley B.Google Review
They did a great job of stopping the noise from my car. They checked and rechecked everything to ensure it was safe and drivable. Did not feel like they were hustling and trying to run my bill up. They did an awesome job. I definitely recommend their services.Services: Wheel alignment, Steering & suspension repair
Stephanie GilliamGoogle Review
Excellent, fast and efficient services. And their prices are awesome!!! Services: Tires, Oil change
Andre StewartGoogle Review
I dropped by here today as my brakes were making an excruciating sound. They were able to take me in as a drop in and was out soon enough to continue to my brunch. I was able to also get my headlights changed as well. Friendly staff and would recommend taking the drive from va where I reside. Thanks again guys! Services: Battery, Brakes
Shakira RichardsVA Resident
Since 2003 I have entrusted all my vehicular repairs and maintenance to John and his team at Glenn Dale, Tire, Auto & Roadside Assist. In that time I have referred my family and friends to this shop. You are in safe and steady hands with John.
Ayawa AklasuMD Resident
Very honest and experienced mechanics. Friendly and courteous service, reasonable and affordable rates. Services: Auto maintenance, General repairs & maintenance, Wheel alignment, Steering & suspension repair, Steering & suspension replacement
Nyoh ClaudiaGoogle Review
I came in for an oil change and to get some of my lights changed on my vehicle and they were very busy but they communicated very well with me about when they would have time I highly recommend being any of your vehicles here. The owners are wonderful and honest so that’s alway a plus.
Daniel CharlesGoogle Review
Very knowledgeable HONEST people. Saved me over 2K based on a quote I would have received from another shop. Services: Tires, Steering & suspension repair, Brakes, Electrical
Ronnell FieldsGoogle Review
I had slow leak from a nail puncture and I was told by another tire shop that run flat tires could not be fully patched. He said it would cost $75 for a temporary fix but he recommended replacing, so I bought another tire online. [...] Thomas did such great work that it was not a temp fix at all and basically let me know the other place did not know what they were talking about. I have had no issues with the tire and its been over 3 months. He also said the repair came with a lifetime warranty so this place is all good in my book. Highly recommend. Service: Tires
RoxyWashington, DC Resident
Contact us
Glenn Dale, Tire, Auto & Roadside Assist
At Glenn Dale Tire & Auto, we specialize in providing expert services for your vehicle, including tire installation, repair, and maintenance. Our team of experienced mechanics also offers a range of auto repair services, such as oil changes, brake repairs, and steering and suspension repairs. We are committed to using only high-quality products and providing excellent customer service to ensure your satisfaction. In addition, we offer reliable and efficient roadside assistance to get you back on the road as soon as possible. Trust us to keep your vehicle running smoothly and safely. Contact us today for all your automotive needs.
- Phone number
- +1 (240) 260-3955
- help@glenndaletireauto.com











