4A Auto Diagnostics and Repair
- Battery
- Towed
- Fair
We have 2 technicians in Johns Creek on file, and both are on this list, along with 22 from towns including Alpharetta (5, 5 mi), Cumming (4, 13 mi) and Duluth (2, 4 mi).
7 open weekends · 21 rated 4.5+ · 2 show a license

The 24 technicians on this page are rated from 4.2 to 5.0 across 6,803 reviews; 22 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (97%), quality (76%) and value (76%). The topics that come up most in reviews of the technicians on this page are "diagnosis", "communication" and "fair". 7 are open on Saturdays and 1 on Sundays. The services the technicians on this page list most often on their websites are brake repair (7), oil change (7), check engine light (5), engine repair (5) and suspension repair (4). 2 show a license on their websites; 8 list staff certifications (ASE) and 8 have a BBB rating of A or A+. Domain records put 15 websites of the technicians on this page at ten or more years old; the oldest dates from 2000. 3 offer financing; 2 give free estimates; 7 are family- or locally-owned and 17 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.
Data verified October 9, 2026
Listed for drivers in and around Johns Creek, GA, 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.
3 of the 24 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.