Best Engine Repair & Rebuild in Riverside, CA

22 technicians listed · all 22 in Riverside · 12 open weekends · 17 rated 4.5+

Data verified October 16, 2026

Jim's Auto Repair

Jim's Auto Repair

4.8 135 reviews
“Reasonable prices with a reasonable time of expectancy of getting your vehicle back in working condition.”
Coupons & offersBBB ASince 2013
9764 Magnolia Ave
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Protrans Automotive & Transmission Specialists

Protrans Automotive & Transmission Specialists

4.7 107 reviews
“They got the part, and fixed my car within an hour to assist me on my way home!”
12-mo/12k-mi warrantySe habla españolFinancing availableFleet accountsBBB accreditedSince 1994
3420 Gato Ct
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GT Pit Stop Automotive Services

GT Pit Stop Automotive Services

4.8 72 reviews
“Thankful for there honesty and only fixing what was needed to get it to pass.”
Coupons & offersShuttle serviceASE certifiedSince 2019Family-ownedFinancing
3222 Motor Cir
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Magnuson Tire & Auto

Magnuson Tire & Auto

4.4 58 reviews
“Rene took care of me and gave me a good deal on a set of Toyo tires!”
Coupons & offersSince 1949Financing
1555 University Ave
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Prado's Quality Auto Repair and Smog

Prado's Quality Auto Repair and Smog

4.7 58 reviews
“As soon as I walked into the shop, all employees were very approachable for questions I had, and I received great advice from everyone.”
Coupons & offersSince 1990
7010 Jurupa Rd
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I.G. Diego Engine and Transmission Rebuilders Inc.

I.G. Diego Engine and Transmission Rebuilders Inc.

4.3 64 reviews
“Great work once again , good men work at this place, excellent work”
1-yr warrantyHybrid & EV serviceSe habla españolSince 1983Family-ownedBBB A+
5850 Griffith St
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Listed for drivers in and around Riverside, CA, these 22 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: Riverside, CA

All 22 technicians we list here are in Riverside itself. We have 27 technicians in Riverside on file; this page shows the highest-rated 22. The technicians on this page are rated from 4.3 to 5.0 across 2,740 reviews; 16 have 50 or more reviews and 17 are rated 4.5 or higher. The topics that come up most in reviews of the technicians on this page are "price", "fair" and "honest". 11 are open on Saturdays and 2 on Sundays. The services the technicians on this page list most often on their websites are brake repair (2), check engine light diagnostics (2), engine repair (2) and oil changes (2). 2 list staff certifications (ASE) and 5 have a BBB rating of A or A+. Domain records put 8 websites of the technicians on this page at ten or more years old; the oldest dates from 2001. 1 offers emergency or roadside call-outs; 3 offer financing; 1 gives free estimates; 2 are family- or locally-owned and 6 list coupons or special offers. We count these figures across the technicians on this page; hours and prices change, so confirm the details with the technician before you visit.

Do engine shops listed for Riverside let me spread the cost?

3 of the 22 shops on this page state that they offer financing. An engine is the repair people borrow for, so compare what the credit costs against what a different car would cost you, and get the repair quote in writing first.

Nolbert's Auto Service

Nolbert's Auto Service

4.6 30 reviews
“Took our vehicle into Nolberts on a Sunday afternoon and right away he confirmed our brake issue and we were done within 3 hrs for a very reasonable price 👍🏼”
BBB A+Emergency serviceSince 1999
5942 Republic St
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Csai Auto Service

Csai Auto Service

4.6 77 reviews
“They didn't hit us with additional fees and walked us through reach step of the process m, what more can you ask for.”
Coupons & offersCalifornia inspection stationFleet accountsSince 2012
3001 Chicago Ave
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Auto Integrity

Auto Integrity

4.7 99 reviews
“It's hard to find a place that has integrity and structure and you find it in this place.”
Since 2017Financing
11883 Magnolia Ave #45
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RPM Auto Repair

RPM Auto Repair

4.4 72 reviews
“Older gentlemen at the front desk had great customer service explained silly things with my kia I was getting done .”
10% off24-mo/24k-mi warrantyASE-certified techsBAR license #265224Hybrid & EV serviceSince 1995
2650 E Alessandro Blvd
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LPZ Auto Repair

LPZ Auto Repair

4.8 66 reviews
“I was also given a couple of reasonably priced quotes for four new tires which I will come back to get as soon as possible.”
Free consultationSince 2024
2692 Main St
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Top Dawg Auto Repair

Top Dawg Auto Repair

4.4 66 reviews
“Sent my car in at 3 for rear pads and rotors, they were done by 4, super fast and reasonably priced.”
Coupons & offersSince 1990
3700 Chicago Ave
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Vehicle Repair Center

Vehicle Repair Center

4.5 72 reviews
“Managed to get in day of when I was wayyy over due and they got me in same day, and warned me about a recall on my car!”
Any make or model specialistSince 1998ASE certified
2409 Main St
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Wayne's Engine Rebuilders

Wayne's Engine Rebuilders

4.4 54 reviews
“I have heard that this is the best shop to use for your engine work.”
Since 1977
2200 Business Way
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Riverside Car Clinic

Riverside Car Clinic

4.7 67 reviews
“Bruce is the best mechanic I have ever known ( even better than the one i married long time ago).”
17846 Van Buren Boulevard
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Fred's Complete Auto Repair

Fred's Complete Auto Repair

4.6 32 reviews
“I recommend Fred to anyone in the area who needs a reliable, friendly , mechanic you can trust who does solid work.”
4220 Glen St
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Ace Auto Service

Ace Auto Service

4.9 25 reviews
“Changed my alternator very professional and nice if I'm in the area again will be my go to spot for any mechanic needs”
Since 1997
10180 Hole Ave STE 500
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Illustrious Automotive Repair

Illustrious Automotive Repair

4.7 34 reviews
“He rebuilt my AC compressor, installed a new radiator, replaced the valve cover, tuned the engine, replaced the distributor, and replaced the center link and idler arm for an alignment”
5824 Republic St
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Vinatek Auto

Vinatek Auto

4.7 11 reviews
“He got my truck up and running At a very reasonable price.”
12391 Sampson Ave
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Aguilera's Auto Repair & Engine Rebuild

Aguilera's Auto Repair & Engine Rebuild

4.6 9 reviews
“Great service n excellent pricing, lots of knowledgeable and trustworthy guys there”
974 Main St
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Ace Machine

Ace Machine

4.9 8 reviews
“Same day service on my flywheel and got it lookin new!”
7515 Jurupa Ave STE E
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National Motorsports Auto

National Motorsports Auto

5.0 1 review
9550 Mission Blvd Unit B
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HomeEngine Repair/Rebuild ServicesCaliforniaRiverside, CA

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