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Quantum Mobile Mechanic

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

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Response time

2 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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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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3 months ago

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James W.

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4 months ago

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James W.

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5 months ago

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James W.

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4 months ago

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

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James W.

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8 months ago

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James W.

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1 year ago

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James W.

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2 years ago

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James W.

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4 months ago

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James W.

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1 year ago

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James W.

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1 year ago

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James W.

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2 years ago

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James W.

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11 months ago

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James W.

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1 year ago

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7 months ago

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James W.

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1 year ago

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James W.

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1 year ago

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James W.

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1 year ago

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1 year ago

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

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1 year ago

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1 year ago

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7 months ago

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

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9 months ago

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2 years ago

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James W.

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1 year ago

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

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9 months ago

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1 year ago

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1 year ago

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

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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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9 months ago

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2 years ago

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James W.

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1 year ago

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James W.

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9 months ago

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James W.

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2 years ago

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2 years ago

Janes was very courteous and knowledgeable especially professional. Thank you bro! My brother recommended him to me.

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James W.

Love helping out a fellow veteran!

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1 year ago

Great service. Responsive, reliable, and quality work. James was a big help. He's honest and knowledgeable. Thank you!

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1 year ago

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2 years ago

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2 years ago

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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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