Best Engine Repair & Rebuild in San Marcos, TX

10 technicians listed · 4 in San Marcos · 1 open 24/7 · 5 open weekends · 7 rated 4.5+

Data verified October 16, 2026

Kingdom Auto Repair Service

Kingdom Auto Repair Service

4.9 136 reviews
“I appreciate the transparency and honesty I always receive, I am able to make informed decisions about my car care that make sense for myself and my budget, while also feeling assured that my car is in excellent working order”
Coupons & offersFree consultationSince 2024Financing
San Antonio, TX · 45 mi from San Marcos
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B & M Automotive

B & M Automotive

4.8 101 reviews
“Josh got us in and the problems were quickly identified and handled in a timely manner.”
Coupons & offersBBB accreditedSince 1985
San Antonio, TX · 45 mi from San Marcos
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Larson's Automotive

Larson's Automotive

4.8 126 reviews
“Highly recommend this company if you have fleet vehicles, quick turn around and they give you immediate feedback and on time service”
36-mo/36k-mi warrantyASE-certified techsSince 2016Family-ownedFree consultation
San Antonio, TX · 45 mi from San Marcos
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Texas Diesel Injection

Texas Diesel Injection

4.6 81 reviews
“I have been dealing with the Death Wobble on my F-250 for so long and it had become so dangerous to drive, so Friday I called TDI and brought my Truck to them on Monday morning .”
Since 1988
San Antonio, TX · 45 mi from San Marcos
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Ellison's Discount Auto Repair

Ellison's Discount Auto Repair

4.9 48 reviews
“Nathan was great with diagnosing the problem and got it fixed the next day.”
BBB accreditedSince 2000
1312 S Interstate 35
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Red's Truck & Trailer Repair LLC

Red's Truck & Trailer Repair LLC

4.4 55 reviews
“Mario and Jonathan went out of their way to help us on the weekend - even though they weren't working, saved us a lot of headache from the broker, thanks again, definitely using their services in the future!”
Since 2021
San Antonio, TX · 45 mi from San Marcos
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Listed for drivers in and around San Marcos, TX, these 10 shops repair, rebuild and replace engines. What each one says about machine work, warranty terms and the engines it supplies comes from its own website; ratings and quotes come from public reviews.

Area overview: San Marcos, TX

4 of the 10 technicians we list are based in San Marcos; the other 6 serve San Marcos from San Antonio (45 mi). The technicians on this page are rated from 4.0 to 5.0 across 1,147 reviews; 7 have 50 or more reviews and 7 are rated 4.5 or higher. 1 is open around the clock; 5 are open on Saturdays and 1 on Sundays. 1 lists staff certifications (ASE). 5 have ten or more years of experience, the longest 41 years. 1 offers emergency or roadside call-outs; 1 offers financing; 2 give free estimates; 1 is family- or locally-owned and 2 list coupons or special offers. We have a website on file for 6 of the technicians on this page; 5 publish a contact page; 1 lists a public email and 1 takes bookings online. We count these figures across the technicians on this page; distances are straight-line, and hours and prices change, so confirm the details with the technician before you visit.

Why do some listings show another city?

4 of the 10 shops are in San Marcos itself and the rest come from other towns within 50 mi. An engine job means leaving the car for days, so the drive happens once at each end rather than every morning.

Georges Garage

Georges Garage

4.9 44 reviews
“Happy with the work they did on my parent's car and ability to tow.”
San Antonio, TX · 45 mi from San Marcos
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Mega Power Engine Treatment

Mega Power Engine Treatment

5.0 1 review
“The Mega Power Band Engine Additive Service they promote fixed my cars problem for just $400.”
Open 24 hoursSince 2006
210 Durango St
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Salazar Mobile Mechanic

Salazar Mobile Mechanic

4.4 28 reviews
“I had thought it was the alternator but confirmed the alternator was fine via his test.”
228 Buffalo Run Dr
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Sendit Automotive

Sendit Automotive

4.0 8 reviews
“My car now brakes a lot smoother and I can tell the difference with new bearing replaced!”
20001 TX-80
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Why these companies made our list

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