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Check Engine Light On? Or Car Not Running Right?
A check engine light—or even no light at all—can signal hidden issues.
While free scans at auto parts stores can provide Diagnostic Trouble Codes (DTCs), they only point to a general problem area, not the exact cause.
In Arnold and Jefferson County, at 21 Machine Mobile Mechanic, we don’t believe in guessing or throwing parts at a problem. Our on-site diagnostic equipment accurately identifies the root cause, saving you time, money, and frustration.
Get the right diagnosis the first time—contact us today!
Open 24/7
Jefferson County & Arnold
Breakdowns do not care about business hours and neither do we.
We are open 24/7, ready to come to your home, workplace or roadside emergency spot—whenever you need us. Rain or shine, day or night, we have got your back.
We specialize in reliable, affordable and fast mobile auto work including:
Full repairs – brakes, AC, electrical issues, suspension & more
Routine maintenance – oil changes, filter replacements, fluid top-offs
Full inspections – diagnostics, tire checks, brake tests and more
Looking for an emergency mechanic near me? Need affordable mobile auto repair at home or work? Want the best car AC repair St. Louis has to offer?
We have got you covered. Call or text now to schedule your service. 314-699-9064
Key Offerings
Maintenance
Stay ahead of problems with our on-the-go maintenance services. From oil changes to fluid top-offs, we keep your car running smoothly—wherever you are.
Repairs
Broken down or dealing with car trouble? Our mobile mechanics come to you, diagnosing and fixing issues on the spot to get you back on the road fast.
Inspections
Buying a car or need a safety check? We provide mobile inspections to give you peace of mind—no need to drive to a shop, we come to you!
