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    Quantum Mobile Mechanic

    4.8 (164 reviews)
    Closed 9:00 am - 12:00 pm

    Get pricing

    Response time

    3 hours

    Response rate

    100%

    Services - Quantum Mobile Mechanic

    Vehicle battery testing

    Check engine light

    Engine oil light diagnosis

    23 More Services

    Auto general diagnosis

    Auto noise diagnosis

    Tire Pressure Monitoring System diagnosis

    Auto no-start diagnosis

    Auto vibration diagnosis

    Auto diagnosis or inspection

    Auto pre-purchase inspection

    Auto maintenance

    Auto fluids and filters maintenance

    Oil changes

    Auto repairs

    Auto battery or electrical system repair

    Auto brake repair

    Auto engine repair

    Auto HVAC repair

    Auto light repair

    Auto steering and suspension repair

    Auto wheel and tire repair

    Auto windows and mirrors repair

    Routine automotive maintenance

    Transmission leak inspection

    Tire rotation

    Windshield wiper replacement

    Quantum Mobile Mechanic Photos

    Recommended Reviews - Quantum Mobile Mechanic

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    Reviews With Photos

    My main concern is that Quantum Mechanics communicated their assessment directly to the dealership and did not properly inspect the vehicle, even though I paid for the inspection. The assessment they gave the dealership described the car as "well-maintained with a few minor issues," which contradicted what I was told: the car needed its power steering fluid changed, new suspension struts, ball joints, engine, and transmission mounts, totaling $2,676.35. Because Quantum Mechanics called these issues minor, the dealership remained firm on its listed price. I don't understand why Quantum Mechanics communicated this directly to the dealership, since I paid for your service, not them. Also, the car had many other issues that they did not mention, like rust, the floorboard, and the dashboard lights. The e-brake sometimes does not engage it also has an oil leak

    Engine bay post service
    Aiden ..

    I found James on Apple Maps for local mechanics, and boy... I got lucky. I called the number on Apple Maps to see about a transmission fluid leak. James answered with a congenial and professional attitude. He came out ASAP to do an inspection and was immediately able to determine that my transmission was fine; however, I had a bad, leaking valve cover. He charged $100 for an inspection, which acted as a discount when I proceeded with the repair. Since the manifold was being removed to access the valve cover, he asked if I also wanted to get my sparkplugs/coils serviced. He didn't try to sell me on any extra services; he was genuinely interested in taking care of my car. I got my sparkplugs replaced, ignition coils replaced, and a full set of fresh valve cover gaskets with parts+labor totaling ~$900. My 2010 Nissan Xterra with 130k miles has been driving great ever since. James is an honest mechanic who has a passion for treating cars right. His prices are extremely fair, and I would recommend him to anyone in the area.

    So awesome!! It's mobile service to your convenience and no hassle or waiting.

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    2 years ago

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    James W.

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    1 year ago

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    1 year ago

    Great service, was very helpful and had great customer service! I would definitely recommend John to friends and family!

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    James W.

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    2 years ago

    James was great, friendly and informative. Provided a reasonable quote and stuck to it. Super fast and very professional.

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    2 years ago

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    2 years ago

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    2 years ago

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    1 year ago

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    2 years ago

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    2 years ago

    Really personable and efficient. Will gladly work with again. Solved our battery cable issue.

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    James W.

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    1 year ago

    Quality of is awesome. Customer service is amazing. guy is legit. I would recommend him to everybody.

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    James W.

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    2 years ago

    Wow! Had a problem w/brakes. Fixed in minutes. Excellent service and was on time. Relieved my stress. Awesome Thanks

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    James W.

    Fast and convenient is what we aim for!

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    2 years ago

    He was very professional. He told me what he was doing while he was making the repairs on my car, I would highly recommend him for repairs.

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    James W.

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    2 years ago

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    2 years ago

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    1 year ago

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    James W.

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    2 years ago

    James did an awesome job highly recommend him if you are looking for a trustworthy mechanic. Prices are very reasonable and he comes to you.

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    James W.

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    2 years ago

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    2 years ago

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    2 years ago

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    James W.

    I’m so happy we could service your vehicle to your satisfaction!

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    2 years ago

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    1 year ago

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    2 years ago

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    Page 3 of 5

    Quantum Mobile Mechanic Reviews in Other Languages

    Ask the Community - Quantum Mobile Mechanic

    I have a 88 Toyota truck that is not getting any electrical power to the dashboard or ignition . I'm not available until evenings after 530pm?

    No problem! We charge $125 for a diagnostic.

    Hi James. I read you're a veteran Navy guy. Me too. Anyways, I have a 1991 Ford Bronco with a 351 engine. I've been eating batteries so I suspect my alternator is bad. Would I be able to schedule with you to come to my house in Claremont fix?

    Of course we can perform a diagnostic for you for a cost of $125. We service the Claremont area. This will include testing your charging system and if you have a parasitic draw we can check that too.… Read more

    I was wondering how much it would cost to come out and find out is wrong with my car?

    We charge $125 to perform an at home (or anywhere) diagnostic.

    Don’t See Your Question? Ask Away!

    Review Highlights - Quantum Mobile Mechanic

    James diagnosed and explained every part of the repair, gave me options and never pressured us.

    Mentioned in 105 reviews

    Read more highlights

    Purrfect Auto Service - Inside

    Purrfect Auto Service

    (361 reviews)

    Great service!!! Mohammed gives the best customer service to his customers if you need any work…read moredone on your car he has your back. Thank you again for working on my car. Staff is very friendly. Best service!!!

    The amount of unprofessionalism at this spot I had with the man in the video is crazy! I came here…read moreto get an oil change and to get my brakes changed. My husband physically dropped off brake pads to this joint and told him it would be 120 for installation. To my surprise when I got there, the guy gave me a price of 275 total. I looked at him shocked and looked in my husband because they told him 120 and my oil change was $70, it should be $190. now it's costing $275?! I'm, where did all these EXTRA CHARGES come from?! I informed the guy that my husband was told 120 not $205. This guy began laughing and was adamant about the 275 . I told him my husband brought the brake pads. Come to find out, it was THIS SAME DUDE that gave him that quote! This guy then told me RREELLLAAAXXX with a condescending tone. I let him know that you really shouldn't be telling women to relax if there's an error on YOUR end because he forgot to take off the brake pads from the estimate. No apology was given, he continued to have an attitude with me and then with my husband. Zero accountability on his part. He proceeded to get extremely unprofessional which you can see in the video that I posted. I only caught the tail end of it, but this guy was unhinged! He continued to be disrespectful to me. My husband was there just listening and when hubby got tired of how disrespectful he was and decided to step in. I took my keys and told My husband "you pay what you need to pay I'm leaving". My husband was right there with him inside the office ready to work things out and pay. Then this guy sprints out, and attempts to move his car and block me in! I was shocked!! SMH Mind you my husband was in the office still. I then went outside and started recording cuz I couldn't believe how unprofessional and irate he was acting! I told him my husband was waiting to pay, but he was adamant about blocking my car. He needs to be fired! Muhammad, you really need to let this man go. He was disrespectful, condescending, irate and immature. After he already disrespected me, he then became facetious by acting as if he did NOT already disrespect me with no apology. Please hire people with better communication skills that do not exhibit psychotic behaviors like this. That is crazy! Also, they took out my wheel caps and didn't place them back in. Don't know why they took them out in the first place. They didn't need to be taken off to rotate my tires Anyway! SMH

    Quantum Mobile Mechanic - autorepair - Updated May 2026

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