Hye Tech Auto Repair
“Firstly, John's Hytech Auto has a way, of not only making your vehicle content with great service and parts, but also, has a way of having the proprietor of their vehicle happy also.”
Best Engine Repair & Rebuild in Covina, CA
15 technicians listed · 9 in Covina · 7 open weekends · 14 rated 4.5+
Data verified October 16, 2026
TL Motors
“I really appreciate the care they take when explaining what repairs need to be done and I always get my car back quickly and for a fair price.”
Eastland Repair & Tire Center
“I love when they service my car, take it early and get back later.”
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Raul's Auto Repair
“He also gave me some recommendations needed for my car and the cost of the smog was very affordable compare to other places I searched for.”
Valley Mercedes Service
“Later when I had some major strut issues they handled it directly with the warranty people and had it ready in less than a week when they were already super busy.”
Menrad Motors
“Randy was super helpful and I'll def be going back for my next service.”
Listed for drivers in and around Covina, CA, these 15 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: Covina, CA
9 of the 15 technicians we list are based in Covina; the other 6 serve Covina from towns including West Covina (3 mi), Glendora (4 mi) and La Puente (6 mi). The technicians on this page are rated from 4.3 to 5.0 across 1,602 reviews; 8 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (95%), quality (67%) and value (62%). The topics that come up most in reviews of the technicians on this page are "diagnosis", "honest" and "fair". 7 are open on Saturdays. 3 list staff certifications (ASE) and 3 have a BBB rating of A or A+. Domain records put 9 websites of the technicians on this page at ten or more years old; the oldest dates from 2003. 1 offers financing; 2 give free estimates; 2 are family- or locally-owned and 6 list coupons or special offers. We have a website on file for 11 of the technicians on this page; 5 publish a contact page; 3 list a public email and 4 take 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?
9 of the 15 shops are in Covina itself and the rest come from other towns within 10 mi. An engine job means leaving the car for days, so the drive happens once at each end rather than every morning.
Diesel Ground Systems INC
“They help me with my car and check it for me for a low cost .”
Castle Automotive Inc
“Amazing customer service and always kept me updated wouldn't take my truck anywhere else”
Prato Motorwerks
“I've taken my 911 for years here for general maintenance and won't take it anywhere else.”
Jmc's Auto Speed Zone
“Honest, really good pricing, and good customer service !”
Chago the Mobile Mechanic
B & D Auto Repair
“Beyond helpful, kind and go above and beyond to assist us.”
R & N Complete Auto Repair
“My wife reported exceptional service from the person who took our car.”
Nutech Auto Repair
“If you have any service or repairs needs, go to Nutech you won't regret it.”
Vj's Auto Service
“I enjoy taking my wife's Audi to VJ's Auto Service and they have never disappointed me in the quality work they do.”
Why these companies made our list
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