Bash Autoworx Porsche
- Know
- Engine
- Mechanic
We have 3 technicians in Diamond Bar on file, and all of them are on this list, along with 21 from towns including Upland (3, 12 mi), Corona (3, 17 mi) and Pomona (2, 5 mi).
11 open weekends · 22 rated 4.5+ · 3 show a license
Data verified October 16, 2026
Listed for drivers in and around Diamond Bar, CA, these 24 shops are general mechanics. What each one states about certifications, warranties and financing comes from its own website; ratings and quotes come from public reviews.

The 24 technicians on this page are rated from 4.4 to 5.0 across 5,159 reviews; 23 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (93%), quality (80%) and punctuality (75%). The topics that come up most in reviews of the technicians on this page are "price", "honest" and "communication". 11 are open on Saturdays. The services the technicians on this page list most often on their websites are brake repair (3), diagnostics (3), wheel alignment (3), alignments (2) and brakes (2). 3 show a license on their websites; 4 list staff certifications (ASE) and 18 have a BBB rating of A or A+. 22 have ten or more years of experience, the longest 99 years. 5 offer financing; 3 give free estimates; 11 are family- or locally-owned and 14 list coupons or special offers. 1 has Spanish-speaking staff. We have a website on file for 22 of the technicians on this page; 19 publish a contact page; 12 list a public email and 6 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.
3 of the 24 shops are located in Diamond Bar; the rest come from other towns within 20 mi. Distances are straight-line.
- “Am new to the area and had my car towed to their shop after a massive leak and they diagnosed and fixed the problem within a few days without issue!” — customer of Auto Squad Repair
- “The price was fair and reasonable. Also they didn’t force me to do work that wasn’t necessary as many mechanics do, including dealers.” — customer of Bash Autoworx Porsche
- “The people who work here are wonderful. They are very kind, professional and honest.” — customer of Alonso's Auto Repair
- “I highly recommend integrity for your full vehicle service needs especially for transmission diagnostics and repair.” — customer of Integrity Transmission & Auto Repair
- “They diagnose the problem, quote me a price, and keep me updated.” — customer of Domestic Diesel & Auto Services
Excerpts from public reviews of the technicians listed on this page.
Brake Pad Replacement Cost: Do You Really Need Rotors?
Can a Mechanic Charge More Than the Estimate? State Rules
Can I Bring My Own Parts to a Mechanic? What It Saves
Car Battery Replacement Cost 2026: Price by Where You Buy
Do Mechanics Have to Warranty Their Work? (2026)
Does a Different Mechanic Void Your Car Warranty? (2026)