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TMC Auto Repair

4.6
(161 reviews)

Business Details

20241 E Valley Blvd, Walnut, CA
91789, United States
(909) 260-8450
https://tmcautoca.com/

About

Auto Repair ShopBrake ShopTransmission Shop
TMC Auto Repair in Walnut, CA is a general automotive repair shop that offers a variety of services ranging from diagnosis, major and minor repairs, engine rebuilding, and preventative maintenance. Our master mechanics are ASE certified with years of professional hands-on experience, so you can be assured that we can take care of all your automotive needs. We are a family owned business and are dedicated to providing the best automotive services for a reasonable price.

Details

  • Requires appointmentNot available
  • Credit cardAvailable
  • DebitAvailable
  • Cash onlyNot available

Location

TMC Auto Repair
20241 E Valley Blvd, Walnut, CA
91789, United States

Hours

MondayClosed
Tuesday9:00 AM - 6:00 PM
Wednesday9:00 AM - 6:00 PM
Thursday9:00 AM - 6:00 PM
Friday9:00 AM - 6:00 PM
Saturday9:00 AM - 6:00 PM
SundayClosed

Reviews

4.6
161 reviews
5 stars
140
4 stars
2
3 stars
3
2 stars
1
1 star
15
  • OB
    Oscar Barajas
    Jul 20, 2026
    5.0
    Was coming from out of town 5hrs away and my battery needle on dash board went all the way to the right all of a sudden.. so I went there directly and with out hesitation they got me in with in the hr and diagnose the problem.. after they checked, it was just the needle from dash board that was malfunctioning.. and they waved the diagnostic fee.. Great customer service and thanks for your help..
  • KG
    Karsten Guth
    Jun 1, 2026
    1.0
    Disappointed after having a good first experience last year. Brought my car in for what I thought would be routine maintenance at 9 AM Wednesday morning. Was told I was “first in line” that day but never heard back. Called Thursday at about noon for an update, was told that they’d had a systems failure or something and were backlogged. Okay, a bit annoying that I had to call the next day for this update, but understandable. Wait the rest of the day, call again around 4 and was told that they’d had a chance to take a look and that he’s about to sit down and send over an invoice. Over 2 hours pass and I receive an invoice via text message for service totaling around $3,000, much more than I was planning on doing, so I inform them I’m going to pass and pick up the vehicle. I am then charged $100 for this. Seems completely unreasonable. I understand you have to pay your employees for their time, but considering how long it took, and what my expectations were going in, I will certainly never be back.
  • RN
    Richard Nuin
    May 31, 2026
    5.0
    Let me start off by saying if you are looking for a trustworthy and great auto shop TMC Repair in Walnut is the place. Dont go anywhere else. First off the lobby is so nice they even have snacks,drinks,water etc for its customers. Martin the owner is front and center in talking to his customers and getting the correct diagnostic done on your vehicle. I had a huge issue with my car and thought I would have to finally let my vehicle go, but it just meant so much to me I had to get it fixed. Not only did he fix it, its running like if it were brand new. This shop is diffrent from every other place because you can tell Martin cares about his customers and there cars, he treats you like family. I am so glad I really looked around for a shop and found TMC. Stop going to other places that dont care about customer service. They dont have shops like this anymore. Martin Thank You and your crew so much. 👍👍 100 stars.
  • MB
    Monty Belpois
    May 16, 2026
    1.0
    His conversation was more important than seeing a customer. Extremely rude service and I won't be coming back. Really can't even give a review he wouldn't even talk to me. Told him to have a nice day and walked out. I'll go somewhere else for someone to fix my car. Considering that, at any point, he could have had the courtesy to it at least ask what I needed service with, and then explain the situation, I wouldn't have left the bad review. Instead he was extremely vague, brushed me off and told me to wait. It seems he had no intentions of assisting me in any capacity. He was just waiting for me to get on, so I got on.
  • BK
    BRUCE KEIBEL
    May 9, 2026
    5.0
    It’s not very often that you rave about the exceptional service at an auto repair shop these days, but TMC is the exception. Martin is amazing to deal with and runs a great facility! I would highly recommend TMC for any auto repair needs. Thanks for helping a visitor to the area Martin. I Truly appreciate you getting me in on such short notice and providing such amazing customer service! Bruce

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