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24 technicians listed · 11 in Rancho Cucamonga · 1 open 24/7 · 10 open weekends · 18 rated 4.5+
Data verified October 16, 2026
Listed for drivers in and around Rancho Cucamonga, CA, these 24 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.
11 of the 24 technicians we list are based in Rancho Cucamonga; the other 13 serve Rancho Cucamonga from towns including Riverside (16 mi), Fontana (6 mi) and Upland (5 mi). The technicians on this page are rated from 4.1 to 5.0 across 3,693 reviews; 17 have 50 or more reviews and 18 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise quality (86%), professionalism (77%) and punctuality (68%). The topics that come up most in reviews of the technicians on this page are "price", "honest" and "communication". 1 is open around the clock; 10 are open on Saturdays and 1 on Sundays. 1 shows a license on its website; 4 list staff certifications (ASE) and 10 have a BBB rating of A or A+. Domain records put 12 websites of the technicians on this page at ten or more years old; the oldest dates from 2002. 1 offers emergency or roadside call-outs; 6 offer financing; 1 gives free estimates; 5 are family- or locally-owned and 11 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.
11 of the 24 shops are in Rancho Cucamonga itself and the rest come from other towns within 20 mi. An engine job means leaving the car for days, so the drive happens once at each end rather than every morning.
