San Antonio, Texas · Established 8 Years

Your Vehicle.
Our Expertise.

From routine maintenance to complete engine and transmission rebuilds, Roy’s Mobile Mechanic HQ delivers dependable automotive repair backed by 8 years in business.

Mon–Fri 10am–8pm  ·  Sat–Sun 10am–6pm

Roy’s Mobile Mechanic HQ shop in San Antonio: a classic Chevrolet Impala parked at the open bay doors with another vehicle raised on a lift insideOur San Antonio shop
Full-service repair
Engine & transmission work
Open seven days a week
Local San Antonio shop

Automotive Services

What We Repair

Six service areas, all carried out at our San Antonio shop. Pricing depends on the vehicle and the job — contact us for a quote.

Oil Changes & Maintenance

Routine oil and filter changes, fluids and scheduled servicing — the work that stops small problems becoming rebuilds.

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Engine Diagnostics

Check-engine lights, rough running, no-starts and noises you cannot place. We find the fault before anything is replaced.

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Electrical Diagnostics & Repairs

Batteries, charging faults, starters and wiring problems traced properly rather than swapped at random.

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Air Conditioning Services

A/C that blows warm through a San Antonio summer is not a small problem. Diagnosis and repair to get cold air back.

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Engine Repairs & Rebuilds

Timing chains, head work and full engine rebuilds — major mechanical work done here rather than sent elsewhere.

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Transmission Repairs & Rebuilds

Diagnosis, repair, replacement and full transmission rebuilds for automatic and manual gearboxes.

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Close-up of a cylinder head at Roy’s with the timing chain and camshaft phasers exposed during an engine repair

About Roy’s

Real Experience. Real Automotive Solutions.

Roy’s Mobile Mechanic HQ has spent eight years keeping San Antonio drivers on the road — oil changes and scheduled servicing at one end, complete engine and transmission rebuilds at the other.

Plenty of shops take the routine work and send the hard jobs down the road. Here the diagnosis, the repair and the rebuild happen under one roof, which means one point of contact and one shop accountable for the result.

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Why Choose Us

Why Customers Come Back

  • Comprehensive automotive servicesSix service areas from maintenance through to rebuilds, so most problems are solved in one place.
  • Routine work and major repairsJay Estrada’s review notes his issues were fixed with “no problems afterwards” — and that everything worked great.
  • Helpful customer serviceOskary Garcia’s last-minute job was, in his words, taken care of “easily”.
  • Attention to vehicle concernsJay also credited the shop with checking additional concerns, not only the fault he came in with.
A V-configuration engine opened up mid-rebuild at Roy’s, both banks of timing chains and camshaft phasers exposed

Customer Reviews

Straight From Google

★★★★★

“They did an awesome job! Had to do a last minute pull through, and they took care of it easily 👏🏽👏🏽”

Oskary Garcia · Google
★★★★★

“Had a great experience with the owner and guys that work at this shop.! Fixed my issues, with no problems afterwards everything worked great.”

Jay Estrada · Google

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Tell Us About the Vehicle

Send the details and we will come back to you with a quote. The more you can describe, the more accurate the answer.

In a hurry? Call the shop directly.

(210) 763-1955
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Contact & Hours

Our San Antonio Shop

(210) 763-1955

Roysmobilemechanic2@gmail.com
12650 TX-16
San Antonio, TX 78224

Monday – Friday10am – 8pm
Saturday – Sunday10am – 6pm