Bash Autoworx Porsche
“I was in tough spot and they went above and beyond to help me and they are absolutely trust worthy.”
Best Auto Repair in Diamond Bar, CA
15 professionals listed · 4 in Diamond Bar · 1 open 24/7 · 7 open weekends · 14 rated 4.5+
Data verified October 16, 2026
Auto Squad DB
“The car repairman was very skillful and careful, and his service attitude was very good.”
Vtec Automotive
“As a woman, it's nice knowing I won't be screwed over or talked down to.”
Diamond Bar Auto Service & Body
“The owner is kind and works honestly.”
Mobile Mechanic Pros Ontario
“Helped get me connected to a great mobile, got out to me same day in a reasonable amount of time and got it fixed for a great price considering they come out to you.”
The Care Shop
“Amazing people that takes great care of their customers!”
Listed for drivers in and around Diamond Bar, CA, these 15 shops handle general repair work. What each one says about parts, warranties, financing and fleet accounts comes from its own website; ratings and quotes come from public reviews.
Area overview: Diamond Bar, CA
Of the 15 professionals we list here, 4 are in Diamond Bar itself and 11 come from towns including Chino (2, 9 mi), Glendora (2, 10 mi) and Anaheim (2, 11 mi). The professionals on this page are rated from 4.4 to 5.0 across 3,350 reviews; 14 have 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the professionals on this page are "price", "fair" and "honest". 1 is open around the clock; 7 are open on Saturdays and 1 on Sundays. The services the professionals on this page list most often on their websites are brake repair (3), diagnostics (3), alignments (2) and oil change (2). 2 show a license on their websites; 4 list staff certifications (ASE) and 10 have a BBB rating of A or A+. Domain records put 9 websites of the professionals on this page at ten or more years old; the oldest dates from 2002. 1 offers emergency or roadside call-outs; 4 give free estimates; 7 are family- or locally-owned and 5 list coupons or special offers. 1 has Spanish-speaking staff. We count these figures across the professionals on this page; distances are straight-line, and hours and prices change, so confirm the details with the professional before you visit.
How long have the listed shops been open?
13 of the 15 shops show ten or more years in business. Longevity is not a guarantee of anything, but a repair shop that keeps the same sign over the same door for that long has generally been settling arguments rather than walking away from them.
Stress-Free Auto Care
“This Becker tire offers great service every time, and is usually always the best deal.”
Import Auto Clinic
“The brake service, drive belt replacement and general auto fluid checks and changes were performed successfully without any issues and in a timely manner.”
Pomona Gear
“Amazing service, I would highly recommend, thank you for your help!”
Domestic Diesel & Auto Service
“They fixed my truck no problem and they keep you updated on the progress of the work👍🏼 I will continue to do business with Domestic Diesel.”
Glendora Import Specialists
“The reason I go to Glendora Import Specialists is because they use OEM parts and are A LOT LESS EXPENSIVE than going to the dealership.”
B & D Auto Repair
“I switched from the dealer to this group several years ago and have never been disappointed.”
小李修車廠 KB Motor
“The boss is very enthusiastic and nice, and he taught me a lot about cars.”
Alonso's Auto Repair
“Great customer service and very knowledgeable mechanics”
Lupe's Auto
“Eric did a great job explaining the repair, didn't try to oversell the work.”
Why these companies made our list
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