Paradise Motorsports
“Jason and family r all amazing thank you”
Best Engine Repair & Rebuild in San Marcos, CA
10 technicians listed · 5 in San Marcos · 8 rated 4.5+ · 1 shows a license
Data verified October 16, 2026
Miramar Automotive & Transmission
“They gave me a clear, easy to understand explanation with the costs and they worked with my budget in the best way possible.”
7 to 7 Auto Repair
“It was practically impossible finding the part but Paul managed to find a very sturdy & practically new differential.”
Coastal Car Care
“Take the time to explain your car to you, and give you affordable options to get your car to where it needs to be.”
Cal West Auto Center
“I left my vehicle with them for a couple day and they were able to squeeze it in and get it done earlier than expected.”
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KB Motorsports
“The staff and owner Kip are very friendly and up front about any service that you might need on your vehicle.”
Listed for drivers in and around San Marcos, CA, 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, CA
5 of the 10 technicians we list are based in San Marcos; the other 5 serve San Marcos from San Diego (21 mi). The technicians on this page are rated from 4.2 to 5.0 across 1,282 reviews; 9 have 50 or more reviews and 8 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (79%), quality (79%) and value (58%). The topics that come up most in reviews of the technicians on this page are "diagnosis" and "honest". The services the technicians on this page list most often on their websites are alignments (2), brake repair (2) and brake services (2). 1 shows a license on its website; 3 list staff certifications (ASE) and 9 have a BBB rating of A or A+. Domain records put 7 websites of the technicians on this page at ten or more years old; the oldest dates from 2000. 2 offer financing; 2 give free estimates; 2 are family- or locally-owned and 5 list coupons or special offers. 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?
5 of the 10 shops are in San Marcos itself and the rest come from other towns within 25 mi. An engine job means leaving the car for days, so the drive happens once at each end rather than every morning.
Miramar Auto Repair
“Franz was really friendly and the work done on my fairlady Z was really good.”
Performance Auto
“Smoke test tracked and fixed evap leak and had it home same morning for way less than others quoted.”
F & M Auto Repair & Diesel Specialist
“Took my mercedes here and they fixed up my car and gave me great deal on everything.”
Caledonian Auto Repair
“They do great quality work with a professionalism that's unmatched.”
Why these companies made our list
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