James was amazing! From start to finish, he gave me the most efficient price on a throttle body replacement and did an amazing job. So thankful for Quantum! read more

They did a great job resolving a suspension issue on my Tesla model 3. I was 100% happy with their response time, expertise and the quality of the work done. I won't hesitate to use them again! read more

Extremely disappointed with their service. I gave a description that the window rolls down but not up and they quickly provided a quote which included the replacement of the motor. This was done without any diagnostics. Upon completing the job, the issue still existed. When asked if they can put the old motor back, the answer was that with the new motor they are able to manually roll up the window but with old one they can't. Which makes no sense because from the cameras in the garage I can clearly see that the window was rolled up manually before the replacement. Then gave some explanation about some computer part that isn't communicating correctly which could be the cause. So basically I was charged $250 for an unresolved issue. Would not recommend getting service from them. read more

Great service quick service! Mobile and just showed up to my house was done with my breaks in like 45 minutes.

Great service! Super friendly and fast repair on my vehicle (alternator/belt/tensioner + spark plugs) in about an hour and a half! Very thorough with the diagnostic. James also checked other areas on my car I had questions about, free of charge, and gave me recommendations and tips on how to do repairs to save me money. Overall the value of the diagnostic was very good, as i thought i needed something else repaired that turned out to not be an issue at all! Definitely recommend and will be using his services in the future. Thanks so much! read more

Absolutely incredible work at a fair price!! What I appreciate about James the most is that he took time to research the problem with my car after troubleshooting several different scenarios until it was fixed 100%. I spent significantly more money with a previous mechanic shop just for my car to have the same problem. Thank you so much, James. I really appreciate your diligence and getting my car back on the road. read more

Quantum Mobile Mechanic - My car getting fixed - Auto Repair Near Me

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The service was great! the response time was fast, I got a quote late at night to get the water pump replaced on my car and the technician Jacob came out the next day and he arrived early and did a great job. read more

James is amazingly coordinated. I booked him only a day in advance and he took the time to call me and give me a super detailed rundown of his process. I was looking to buy across state, and he listened to my concerns and reassured me on each of them. He gave me his game plan in full depth and detailed this documentation and communication process, messaged me when he headed out, and was sharp on time. Sadly I was bait and switched by a dealership - they were in communication constantly with me through everything (even about the PPI appointment) about a used car I wanted to buy, but only last minute they told me that the car had been sold remotely a FEW days ago and they had somehow MISSED IT. James was super understanding of this, and I offered to pay him for his time still - he still refunded me a majority of the balance. He was sympathetic with my disappointment in losing the car, and said we could still work together in the future. I'm definitely coming back to him and I'm thankful for his understanding. read more

My battery light came on last week and basic knowledge I know led me to problem solve what was going on. I cleaned my terminals and figured my alternator was now going out. I sought out a few places but really was happy with James from the start when he took the time to answer every question. He sent me reasonable quotes and came within the time he promised. Now, my car is frustrating, I know that. The first day was a challenge but it showed me how much pride James took into his work and with the new problems that emerged (damaged radiator hose, and in need of a new radiator), he promised to come back the next day to tackle everything. Since he's mobile you can see everything that is going on. You can see where my car gave him problems due to age, and also when he should've taken different routes with the serpentine belt. lol But he owned up to any of his own mistakes which I truly admired. I believe you need to meet people in the middle, especially when it comes to cars, because you don't know what time has really done to it, but you also want someone to understand that and find different routes. The next day James came and fixed everything within the hour. You want someone to have the know-how to find new ways to fix the problem and be honest with you what is going on and if any errors occurred. James' quality work, valued cost for great parts and his expertise, along with his genuine honesty, allowed me to have piece of mind the second day because yes, this whole car problem stressed me out! I don't believe he was trying to add on any additional parts because he showed me what was going on, the leaks, and you can hear and feel the difference. I will always thank him for his time. My dad would usually help me with cars and after his passing this was one more thing that hurt me to look at or an activity I wish I could have again with my dad. I knew he would be happy with the work James did too. I hope he gets all the business in the world and I hope I don't see him again (because that means my car is on fire lol), but for any additional work I will reach out to him. Thank you again! read more

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Highly highly recommend if in need of car repair without the hassle of towing/ driving your car to the shop. Quantum Mobile Mechanic offers incredible service at a great value. James was not only professional and courteous, but also very kind. He was communicative prior and during the appointment, from letting me know when he was on his way to answering any questions I had during the process. James went above and beyond to provide repairs - double checking other parts of my car to see if they were still running well and also recommending other services I may need in the future. Thank you for being an honest and reliable mechanic! read more

Owner and employees communication skill level is low. We made agreement's to come to my work. Then he send his driver to my house. Right off the back bad vibes and lack of communication. read more

If you're reading this review I can only assume you're in a tight spot and looking for a mechanic you can trust. I requested a quote for a starter motor replacement and had a service quote within the hour. After reviewing and signing the digital quote, James sent me a quick text to set up an appointment. That's just the beginning of the amazing service provided by Quantum, once James arrived he quickly began prepping his tools and parts & got to work. He was able to do in 40mins, start to finish, what other shops had quoted me 2 hours for, all the while he was very clearly articulating his work step by step and expressing any concerns and risks to me as he worked on my car. He had my car up and running quickly, honestly couldn't have asked for a better service experience. I also asked James a few questions about some car maintenance I'd been putting off and he was incredibly honest about the work he could knock out himself vs the work that might be a bit cheaper at a specialty shop. I've got Quantum Mobile Mechanics on speed dial now. 10/10 would recommend. read more

Eddie and James are top notch gentlemen. My car broke down and needed an alternator on New Years Eve and Eddie came down and started working on it. Because of the rain, he could not finish. The next day (New Years Day) James, the owner, stepped up and went above and beyond to make sure the job was finished and I had a working vehicle to drive to work the next day. AAA+ service. Best of all they come to you. Definitely going to be using this service in the future. read more

Very helpful. I reached out in a time of need and repairs were quick. I was very impressed with how detailed mechanic was and quality of service. Highly recommend services read more

Very professional and better than any communication you will get from a shop! Replaced my water pump on my mk6 gti with ease. Process is smooth, they conduct themselves very well. Your not only paying for Convenience but quality work and transparency! read more

Great service and good communication, he was very detailed and educating on cars alone. Would recommend. Thank you again for your service!

the service involved the replacement of the alternator for my 2006 Nissan, maxima. An estimate for the repair was promptly provided. Once an agreement was reached on the repair cost, an appointment was scheduled, the mechanic showed up and performed the repair in my driveway in a timely fashion. read more

James and Quantum is awesome. Knowledgeable, reliable, and above all, honest. I have used him 3 or 4 times and have always had great service, and results without upsell, or unnecessary repairs. Excellent service, fair prices, and gets the job done. Thank you James, and Quantum. To top it off, he is a veteran. Thank you for your service, and your service! read more

James was great at communication and very responsive. Took the time to explain everything in detail and was very transparent throughout the whole process. Work was completed as promised. Would not hesitate to use him again for my future car needs read more

My vehicle's battery went out last year and AAA serviced it with a replacement battery. I paid nearly $300 for the service. Ever since the battery replacement my vehicle died on me 6 times. AAA would come out and take a look, but would refuse to replace the battery as they stated that nothing was wrong with my vehicle. I had to look for someone else to take a look and reached out to James from Quantum Mobile Mechanic. He arrived at my place of residence the very next day. After 20 mins of running diagnostics and checking my vehicle, he found the issue. AAA replaced my battery but did not secure the grounding straps. It was a simple fix but it took AAA six times to look over my vehicle and claim that nothing was wrong. I appreciate James' honesty and willingness to help me out. From one veteran to another, I appreciate your help. Car is having no issues! read more

James was great! Professional, flexible and an all around good guy. He didn't mind me hanging around and poking my head around his work, in fact he encouraged it! He was cautious, as to try to not break any parts on my very old car, and even showed me how my new part was functional and my old part was not. Good conversationalist and multi-tasker, was able to chat and not get distracted by my many questions. He had the right tools for the job which make all the difference, he even was able to supply some hose when my old hose showed signs of cracking. Overall, it was great to come someone to your home and do the work in your driveway, while explaining what's going on, what you should focus on in terms of any additional work (did not pressure for it to get done, just advised on concerns). Overall, the rate was in line and competitive with other shops, where you have to get to them, rather than they come to you, this is definitely a game changer and I welcome everyone to reach out to Quantum Mobile Mechanic to get an estimate for the work, you will be pleasantly surprised. Thanks for getting my car back on the road!! read more

Let's start with most jobs James is similar or at least competitive with a brick and mortar location. He'll be the first to tell you an oil change is not the best value for you or him. Now I'll share my experience: I requested a project and he was the FIRST to reply. The reason I highlight that is customer service these days is LACKING, so if you want to stand out you do what's different. The price he quoted me to change my spark plugs was more than fair. He also can do it faster because other vehicles are not waiting. He's very knowledgable and can diagnose the problem quick. I learned about his military and mechanic background also. The concept of a mobile mechanic will catch on. Who wants to be at the mercy of a shop (heavy wait times) or dealer (shady)? James sees it from a customer's perspective so it's nice to know he can come to where you are to do the job. He was very open to the idea of me watching him work on my car, which I did for a bit (mostly talking to him). He's there to earn your trust and prove his credibility. I was very happy with the job he did and it's a no brainer to recommend him to friends! Thanks James! read more

Changed our brakes and rotors a few months ago. Best pricing around was prompt and professional. Kept us in the loop the entire time leading up to the actual appointment. I'd recommend him to anyone and everyone. read more

"I'm extremely grateful for James at Quantum Mechanics! When my daughter's car broke down while she was away at college, I didn't know who to turn to. But James really came through for us. His reliability, expertise, and reasonable rates saved us a lot of time, money, and stress. I appreciate his five-star service and highly recommend him to anyone" In need of car repairs. Thank you, James, For your exceptional work!" read more

Great quality, customer service, and pricing. Also super convenient. Definitely my go to mechanic from now on.

James did a great job changing out my alternator on Jeep Patriot. Worked fast and efficient. Definitely worth every penny. His work speaks for itself. Highly recommend James for any service your vehicle needs! read more

Mobile mechanic, what is more convenient than that? Very knowledgeable, diagnosed my problem. I will call them Again. read more

James was amazing on time and honestly will definitely use him. Best of all he fixed the issue!

James is THE honest and best travel mechanic in the area! He is very honest and also showed me the issues before/in the process/finished. He explained things to me with none mechanic terminology and surely made me feel comfortable asking him simple questions. He was also flexible with the time and communicated with me in timely manner. People who do not know much about the cars but need help, James is THE person you want to talk to. He won't over charge you and very up front of the cost. It's rare to find those honest and nice mechanics these days. Highly recommended! read more

Needed a new battery for my ford transit connect and he got the job done quick and right. He ordered wrong battery and didn't make any excuses he went to get the right one and got it done. Straight business, no bs. Mind you it was 105 degrees. Will use in the future! read more

for once "work got in the way"...usually something family related causes delays but this week it was a work crisis. i had scheduled a brake service for front n rear pads and rotors but was interrupted by a last second rush job to help a friend's job. i had to cancel the brake job at my trusted shop but was still in dire need for new brakes for holiday travels n crap like that. after reaching out to several mobile mechanics i came across james of quantum mobile mechanic. after reading a few reviews i knew i found the perfect mechanic! james gave me an intricate breakdown of itemized parts/labor of agreed tried-and-true aftermarket parts and an etc of 2hrs. after signing the invoice agreement and scheduled a time that worked for me, james arrived within the time he said he would arrive and got straight to work. he listened to my gripes and started with a quick diagnostic. he found that my woes were accurate and got to work right away. i thought hounding him would give him stress but he welcomed it. was nice to chat about the olden days of working on cars as kids as well as other random shop talk. all the while he kept working, never skipped a beat, never glossing over small details and proper procedures. he found a torn gasket from a piston in one of my calipers (gonna get that fixed next by james/quantum soon) he stated it "still works well but will cause problems eventually" he completed the job in under 1.5hrs, bedded the brakes and did a quick test to confirm my suspicion that my car's suspension was soft and would need replacing soon. james did all he promised he would do (and much more) for the agreed amount he initially quoted! his pricing was a great value to me since i was able to finish up my job, help my friend from a crisis and get new worry-free brakes for the holidays and future problems thanks to james and quantum mobile mechanic! in a blink he was here and gone. no traces that he was working on my driveway except that my car had brand spanking new brakes! he took all garbage and busted parts before he left and no new stains on my driveway either! thank you james! looking forward to the future projects we spoke about with my car! read more

James is the man! Finally a TRUSTED mechanic you can count on! I've hired him a few times to work on my 99 Celica and he always does a splendid job! And let me explain why you can count on and trust him! Before I found out about James, I needed my front driver wheel bearing replaced. I'm no mechanic, but I know cars very well, and when I took it to a shop called Trojan Tires in West Covina, they told me that I needed both front wheel bearings replaced, so I did it. Just a couple months later I started to hear noise on both sides in the front! Found James and he said that they did a horrible job. They didn't recommend seals and put a ton of grease which wasn't necessary for my car! So in conclusion, if you want an honest mechanic who won't half ass your car, hit up James! He'll explain to you what's going on and answer all of your questions. Super happy with his work thanks a lot James! PS. If you live in the West Covina/Covina area, DO NOT GO TO TROJAN TIRES! They're one of those shops that'll do half ass work! Just contact James for quality and HONEST service! read more

Great work. Very transparent and knowledgeable. Fair pricing and great work ethic. James' communication is excellent as well.

The service I received from quantum mobile mechanic was beyond exceptional! I would highly recommend the service to anyone for the professionalism, highly competent, and easy going interaction. I was giving consistent updates on the progress due to my work schedule. I can put my full trust into quantum mechanics to get the job done! I will definitely get future service done with quantum mechanics! read more

I am SO glad I hired James to work on my car. He was honest, extremely transparent, and quick!

I tried changing the CV axle on my van and James rescued me when I ran into trouble. Quick response, straightforward pricing, clear explanation of work done. read more

James was courteous, knowledgeable, punctual, and efficient. After working on our Mercedes Benz, I had him look at our Volkswagen which also needed some work and he handled that as well. Pricing was great. Definitely recommended. read more

James is an honest and very knowledgeable technician,. He came to work in my car and made a thorough inspection all over my car and advice me of future problems. He did exactly what I needed and clean everything after. James will be my mechanic for the rest of my life! read more

Had a great experience using Quantum James was super through in his pre-sale inspection meet me at the dealer. Will definately be using him in the future read more

What a great concept this Mobil mechanic is. James is great and very reasonable on pricing. I needed work on my 2005 PT cruiser convertible. I recommend using him as your go to mechanic. Very convenient when you have no time to go to the mechanic and he comes right to you. Always love to support our veterans!! Thank you James. read more