Diagnostic
Focus
Serving Southern Maryland
The Shop
Comes
To You.
Slone Automotive Specialties is a fully equipped mobile mechanic service based in Southern Maryland. We come to your driveway, job site, or wherever your vehicle is—with the tools and expertise to handle everything from routine maintenance to complex diagnostics and engine rebuilds on the spot.
Mobile diagnosticsBrake repairElectrical testingEngine repairHyundai & Genesis99–04 Mustang GTMobile diagnosticsBrake repairElectrical testingEngine repairHyundai & Genesis99–04 Mustang GT
Full
Diagnostic Tools
Quality
Components
What We Do
Mobile Mechanic We Come to You
Save Time
Skip the tow, waiting room, and second trip. Mobile service meets the vehicle where it sits.
Save Money
Direct diagnosis helps prevent unnecessary parts and keeps the repair focused on the actual fault.
Quality Work
Inspection, testing, and technical repair practices guide every recommendation.
Fully Equipped
Professional tools and diagnostic capability arrive ready for routine and advanced work.
Services Offered
Services Offered
Weekdays · Evenings · Weekends — we work around your schedule.
Inside the work
Diagnose first.
Repair with purpose.
Every recommendation starts with the symptom, measured testing, and direct inspection. That means a clearer explanation, a focused repair plan, and fewer unnecessary parts.
Hyundai & Genesis Repair
Dealership-Level Expertise
Focused knowledge of Hyundai and Genesis engine architecture, timing systems, drivability patterns, electrical networks, and common failure points—delivered at your location.
- Platform-specific diagnostics and scan-data interpretation
- Timing, valve-train, fuel, ignition, and cooling analysis
- Engine replacement and internal mechanical repair
- Clear repair priorities grounded in testing
Performance Specialty
99–04 Mustang GT
New Edge Mustang familiarity extends from intake and ignition concerns to timing components, valve trains, engine removal, and rebuild-level work.
How a visit works
From first call to road ready.
A straightforward process built around your schedule — no tow, no waiting room, and no guessing about what the vehicle actually needs.
- 01
Tell us the symptom
Call, text, or send the form with the year, make, model, and what the vehicle is doing.
- 02
Schedule a location
Driveway, workplace, or wherever the vehicle sits — weekdays, evenings, or weekends.
- 03
Test before replacing
Scan data, measurements, and inspection confirm the fault before parts are recommended.
- 04
Repair & review
Work is completed on-site, then explained clearly with any priorities for later.
Common questions
Before you book.
Still unsure? Call 443-771-3719 and talk it through with Slone Automotive.
Call nowWhat areas do you serve?+
Southern Maryland and surrounding areas, including St. Mary's, Calvert, and Charles counties — Lexington Park, California, Waldorf, and nearby communities.
Can repairs really be done in my driveway?+
Most maintenance, brakes, electrical, starting and charging, suspension, diagnostics, and many engine repairs are performed on-site with professional tools.
Do you work on all makes?+
Yes. Slone Automotive services most makes and models, with dealership-level Hyundai/Genesis knowledge and a 1999–2004 Mustang GT specialty.
Are there services you don't offer?+
Diesel and A/C service are not offered at this time. Everything else on the services list is available.
How do I get a quote?+
Send the contact form with your vehicle and symptoms, or call/text for the fastest answer.
REVIEWS
Customer reviews
What Customers Say
Hover to pause · Scroll to see all
“Called and Tyler was at my door in 20 mins. Didn’t haggle me for any unnecessary fixes. Saved me money and did a great job! Service was fast and reliable! I would highly recommend his company!”
Ricky Mason
Fast, reliable service · Google review
“Had an issue with my transmission and asked Tyler for a diagnostic. He was very helpful, insightful and professional. He determined the transmission the shop installed was faulty. Highly recommend his services for anything you may need!”
Danny Ali
Transmission diagnostic · Google review
“Gentlemen that helped with a check engine light issue were great with communication and convenience.”
hot curry
Check-engine diagnosis · Google review
“These guys came out and helped me out when I was in a crazy bad spot tremendously. I would give more stars if I could.”
Michael Crusoe II
Help when it mattered · Google review
“If I could give more than 5 Stars I would! Tyler showed up on time, and is very professional! He diagnosed the issue with my car, and advised me of my options. The service was exceptional, and I will be recommending Slone Automotive to all my family and friends!”
Karla Orr
Exceptional service · Google review
“Five-star Google rating from a local customer.”
Philip B.
Google review · Google review
“Called and Tyler was at my door in 20 mins. Didn’t haggle me for any unnecessary fixes. Saved me money and did a great job! Service was fast and reliable! I would highly recommend his company!”
Ricky Mason
Fast, reliable service · Google review
“Had an issue with my transmission and asked Tyler for a diagnostic. He was very helpful, insightful and professional. He determined the transmission the shop installed was faulty. Highly recommend his services for anything you may need!”
Danny Ali
Transmission diagnostic · Google review
“Gentlemen that helped with a check engine light issue were great with communication and convenience.”
hot curry
Check-engine diagnosis · Google review
“These guys came out and helped me out when I was in a crazy bad spot tremendously. I would give more stars if I could.”
Michael Crusoe II
Help when it mattered · Google review
“If I could give more than 5 Stars I would! Tyler showed up on time, and is very professional! He diagnosed the issue with my car, and advised me of my options. The service was exceptional, and I will be recommending Slone Automotive to all my family and friends!”
Karla Orr
Exceptional service · Google review
“Five-star Google rating from a local customer.”
Philip B.
Google review · Google review
Clear communicationReal diagnostic testingQuality partsMobile convenienceSouthern Maryland serviceClear communicationReal diagnostic testingQuality partsMobile convenienceSouthern Maryland service
Book
Get in touch
Ready to Get Your Vehicle Serviced?
Call, text, or send the vehicle details
Weekday, evening, and weekend scheduling
Southern Maryland mobile service — 1-2 hour response time during business hours
Service Area
Southern Maryland & Surrounding Areas
Based in California, Maryland. Flexible hours: weekdays, evenings, and weekends.
The shop comes to you.