In and out in less than 20 minutes The shop is in the alley way Look for the smog signs directing you to the alley Received the Fastest service for a smog check read more

I was driving from Modesto to Paso Robles and felt like something was wrong with my car. I stopped in Hollister and stayed the night hoping to find a gas station or mechanic shop that could fix the issue - which I friend confirmed was minor. I searched Yelp and found Car Diagnostic - open on Saturdays and highly rated! David fit me into his schedule and resolved the issue. So grateful! read more

Fantastic experience today at Car Diagnostic!!! The owner, Dal Vo, never seems to stop working, and even when super busy takes time helping his customers check out. The prices were extremely reasonable and the turnaround was so quick! I came in for a smog check and oil change, popped in at around 10am, and was out within an hour with zero hassle. The only thing that was a bit vexing is the lack of parking, but now I know to just park on the street and they grab your car for you. I always dread having to get my car serviced and this time it was a breeze. I will definitely be back to Car Diagnostic for future car needs read more

David is awesome! That's all you need to know. Honest, kind and respectful! Car Diagnostic is my go to car repair shop!

This is the best mechanic shop I have ever been to! David and his staff are wonderful, affordable, and most importantly precise!!! We take all of our cars here, and never feel like we're being taken advantage of. read more

Had a check engine light on due to some rodent damage on injection fuel harness. Fixed it in under 2 hrs and at a very reasonable price, 10% of what dealer had quoted me. Will definitely recommend and I will be a returning customer. read more

Car Diagnostic - Chewed up wire - Auto Repair Near Me - Hollister, California

Since we will be on the road visiting during these upcoming rainy Christmas days, we took our 2016 Honda Accord in for a brake inspection. After 45 minutes, David called to tell us the good news, NO BRAKE WORK NEEDED. We now feel confident knowing we can depend on our car to maneuver and stop over Pacheco Pass if necessary. My husband has been taking our cars to David for years. David is a great mechanic and conducts his business with honor and integrity. We will continue to count on David, Car Diagnostic, for our future auto mechanic needs. read more

Fantastic shop. David is honest and straightforward which can be uncommon in this business. Fixed my a/c quickly (same day!) and at a very reasonable price. read more

David has been doing my vehicle's smog tests for many years. I recommend many people to try him. He is honest and reasonable. Thank you David!! read more

David was very responsive and did great work on two of our cars. Pricing was fair and the estimates were honest and accurate. Very please with the overall experience. read more

Great service and quick to fix my car! They called back and gave me a quote and fixed my car within two days!

David is a such a Honest And Trustworthy man he's has worked on my Vehicles since he came to Hollister ca His first location was at the Chevron location on Prospect rd Hollister l would definitely recommend with your Auto needs him and his Staff read more

David is an honest man! He made sure to explain what I DIDNT need before my road trip. As a woman I expected him to up sell me and he did the opposite read more

I had to get smogged and I called ahead and asked when to come in, no appointment necessary. I was in and out of here in like 15 minutes. Super quick and easy to work with! Helpful and affordable. read more

Great Service and great prices. We've been going there for years and have always had good service.

Never fails David and his crew are the best when ever you need anything done it gets done another thing I like is that he will never work on your car with out telling first what he found wrong and it's up to you to decide He's been our mechanic for years All my family and friends have always been very satisfied and so will you .if you need your car fixed don't hesitate take it to car diagnostic you will be pleased with the service read more

We've been bringing our cars here for years and have always been very happy with the work and the customer service. David is very personable and knows his stuff. They have expanded since we starting going there but the service is still excellent. It is always busy, so that tells you something. The prices are very competitive and we always feel confident in the parts used and the work done on our cars. And no surprises. He tells you everything up front and doesn't change it later when you come to pick up your car like some places do. Highly recommend Car Diagnostics! read more

David is so friendly. He's honest. My grandma was the one who pointed this place out to me. I'm glad I gave it a try.

David took me in for a oil change even for a last minute appointment. Good customer service. Quick and fast service.

David was recommended to us years ago and he has always come through with car repairs. He always seems to be busy but manages to squeeze us in... Fast too! Hones and reliable! read more

I actually hate to write this review. We have been taking our 2010 Toyota RAV4 to David for 11 years, every 5,000 miles or so for service. David is down to earth, service has been ok, and he doesn't try to addon unnecessary things like the Toyota dealership does. However - Something has changed since the pandemic. I contacted David to discuss a 180,000 mile service and all the recommendations from Gilroy Toyota totaling $1,800! David said he was too busy to discuss at that moment and to come in later in person with the list. I went in yesterday afternoon and he took a cursory look at the list. We talked about 2 of the items on the list, but he said he was busy and could I bring the car in for the service the next day at 9am to go over it and leave the car. He would have it ready by 1pm. I showed up today at 9am and David said "we covered everything yesterday." I told him we didn't, but in any case, I had some questions about what some of the items were so that I could make a decision. He said he was too busy and he would call back in the afternoon to give me a quote. I guess he forgot that he told me to bring it in and it would be ready by 1pm. I told him again that I needed to have a couple of items explained and I would appreciate it if he would take care of me. Again, we have taken our car to him for 11 years! He again said he didn't have time to answer my questions. I had taken about 40 seconds of his time. At that point, I realized this was not the same David that we had grown to know and trust and I told him we would have to find another mechanic. He simply shrugged his shoulders and walked away. Over the years, other good mechanics have come to Hollister. I'd advise you to check around. read more

David thee only mechanic I trust in town! When you need your vehicle to be repair he is the one to call or bring in your vehicle.

I've brought in 2 separate vehicles, about 3 weeks apart, both for a smog check. I didn't have an appointment, I just dropped in and they were able to perform the smog checks right away during both visits! Very professional, reasonably priced and best of all, no waiting other than the smog checks themselves! read more

Went to another mechanic for a smog check and they had to cancel it with no notice. So I called around and this place had an opening. They got it done quickly, and I could tell the shop was very well run. Lots of mechanics servicing lots of cars. Lots of customers being efficiently attended to. I'll definitely be giving them my business again. read more

I have been here a couple of times, and the owner is very nice. He will not get overcharged here and they check your car quickly as well. Highly recommend. read more

I thought I'd take my time taking my car in to get a smog check on a Saturday morning. I figured they wouldn't be busy. Whoa.....I was wrong. That's a good sign for a business when there are people waiting for their cars to get serviced. I walked in and was told it was going to be an hour wait. I told them I'd wait around since I had no ride. They took my name and number and held my place in line and said I could do whatever I had to do and they'd call me when it was my turn to get smogged. Cool! Ran some errands and got a call to come back. I'm a mechanic by trade, no smog license though, and it's hard for me to find someone to trust to do any sort of work on my cars. I have to say, this place won me over. read more

Great customer service. They provide you with all the information that you need to make your own decision.

What's the worst thing a car repair shop could do? First not tightening the lug nuts and having the wheels come off while driving and second not adding oil after an oil change. Well the second one happened here. After picking my car up and driving home 6 miles, I heard a horrible noise coming from the engine bay. Low and behold, the dipstick was dry. I topped off the oil and drove back to talk to the owner. He basically called me a liar, insulted my intelligence and said he would do the oil change again. No way I said. Forget this place. I have used them a few times in the past and always get a weird shady feeling. Never again. read more

Called at last minute for a smog and oil change and David got me in right before a holiday weekend. Prices were cheaper than SpeeDee. I really like this place and I think I just found a new mechanic for my car repairs. read more

I was very pleased with the service I received at Car Diagnostics. They are very informative, knowledgeable and skilled. This was my first experience with them but I will definitely be a return customer. There price for smog check is cheaper than Speedee even with a coupon. If your car fails they can do the repairs necessary to get a pass, unlike Speedee who just sends you down the road. read more

Smog check with no appointment, short wait, great customer service. Owner David was great! I'll be back.

Had a great experience getting my car smogged here. The whole team was very friendly and professional. No surprises on the cost. I was very pleased with the service I received. read more

This is the only place I take my car. My entire family come here also. Great guys they let you know what needs to be done if they find something unexpected before they do it. Highly recommended.. read more

Overall it's an OK place to get your car repaired. BUT don't be mistaken that this IS NOT a typical mechanic shop. I went in there for a transmission flush, but ending up took the car back because the fluid is still as dirty. We then discovered that his employee decided to cut a corner by not flushing the torque converter as prior instructed and agreed on. The owner agreed to redo it, which resulted in a clean fluid as should have been done in the first place. However, the owner was not happy when I raised a fundamental question that I'm not responsible for the time and material wasted by his employee tardiness. Not to mentioned my time wasted on 3 additional trips to rectified the problem. read more

I have used many places over the years but this place is my total go to car repair shop. They know their stuff. Prices are great. David the owner, will not over charge or do work that is not needed. Here is an example....I took my truck in for an oil change at a quick oil change place in Gilroy. They told me I needed a new water pump. The oil shop wanted to do it for $500.00 I decided to take my truck to Car Diagnostics. I explained I needed a new water pump. They called me a few hours later telling me they pressurized the system and found no leaks and the water pump was working fine!! They could have changed it I would have never known......THANK YOU FOR YOUR TRUE HONESTY!!!! I will drive from Morgan Hill to Hollister to this very honest and great auto repair shop. read more

I absolutely love the owner of this place. He is a little hard to understand due to his accent, but great honest, nice guy. I came in because this is where my boyfriend's mom takes her car to for servicing. I needed a serpentine belt and my car place was gonna charge me 168 dollars to fix it! I decided that was really expensive since the belt is very inexpensive so I took my car to Car Diagnostic Center and he said it would only be 80! That more than half of what the other guys were gonna charge me. Needless to say, I am more than happy. I will be going back for future maintenance on my vehicles. read more

David is super knowledgeable and very honestly priced. He has earned my trust and business. Great local shop that gives you much more service for the price. Give them a try if you are looking for an excellent and trustworthy mechanic. read more

David's work is amazing. Great pricing and excellent quality work. He's my GO-TO guy now.

First off, they are on East St. between 2nd and 3rd. Ok, now for the review. Fastest smog check experience ever! Very courteous service.

This is my favorite place to take my cars for service or major repair. There is no other place in town where I would take my car. Great Service from the owner David and all the employees. Great guidance and recommend Car Diagnostics in a heartbeat! Props to the best shop in town!! read more