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Diagnostics · We come to you
Mobile Car Diagnostics in Stockbridge & Metro Atlanta
Check engine light on, or a car that’s acting up and you don’t know why? We come to your driveway and find the cause, so you don’t spend money on the wrong repair.
4.3 stars from 60 Google reviews · Available 24/7

Symptoms
Signs your vehicle needs a diagnostic
If any of these sound familiar, call or text us and describe what the vehicle is doing.
Check engine light is on
The computer has logged a fault and wants it looked at.
Rough idle, stalling, or hesitation
The engine shakes, cuts out, or stumbles when you press the gas.
Won’t start, or only starts sometimes
Could be the battery, the starter, the alternator, or something else entirely.
Other warning lights on the dash
Battery, ABS, temperature, or any light that wasn’t on yesterday.
Electrical problems
A battery that keeps dying, or lights and windows that act up.
You’re about to buy a used car
Have it inspected before you hand over the money.
Check engine light flashing? Pull over when it’s safe and call us. Driving on it can turn a small repair into a big one.
What we do on-site
Diagnostics we handle where the vehicle sits
01
Check engine light diagnosis
We read the codes, then test to find the actual cause behind them.
02
Electrical diagnosis
Dead batteries, lights, and other electrical issues traced to the source.
03
No-start diagnosis
We check the battery, starter, alternator, and ignition to find out why it won’t crank.
04
Pre-purchase inspection
Before you buy a used car, we check it over and tell you what we find.
Also on-site
Motor mount replacement
We replace motor mounts where the vehicle is parked. Every motor mount job starts with a diagnostic, and your estimate comes after that.

Real job · Stockbridge, GA
A knock sensor wiring fault, found and repaired on-site
On this job in Stockbridge, the fault turned out to be the knock sensor wiring. A code reader can point to a circuit, but it can’t tell you whether the part or the wiring has failed. We tracked it down and made the repair right there, with no tow and no shop visit.
What to expect
$95 to find the problem, and half goes toward the fix
Call or text with your year, make, and model and what the vehicle is doing. We come to you, track down the cause, and explain what we found in plain English. If you want it fixed, you get the price before any work begins.
Where
Your driveway, your office lot, the roadside, or wherever the car you’re buying is parked
Typical time
About an hour
Diagnostic fee
$95, due when the diagnosis is done
Same-day repair
Half of the fee is credited toward the repair when we do it the same day
Pre-purchase inspection
$150
4.3 stars · 60 Google reviews
“Great service begins with the initial phone call. Erica was extremely patient and professional. She connected me with their mobile mechanic who was as knowlegeable and helpful as anyone could hope for. I will definitely be recommending this service to all of my friends and family!”
Joan Merriweather · 5-star Google review · Auto engine diagnostic
FAQ
Mobile diagnostic questions
How much does a mobile car diagnostic cost?
The diagnostic fee is $95. It covers the time, tools, and expertise it takes to find the problem, and it’s due when the diagnosis is done. If we do the repair the same day, half of the fee is credited toward the cost of the repair.
The parts store read my code for free. Why pay for a diagnostic?
A code tells you which system reported a problem, not which part failed. We test to find the actual cause, so you don’t pay for parts you didn’t need. If you’d rather we do a repair based on someone else’s diagnosis, we can, but we can’t guarantee it will fix the problem.
Is it safe to drive with the check engine light on?
If the light is steady and the vehicle drives normally, it’s usually fine for a short time, but get it checked soon. If the light is flashing, or the vehicle is shaking, overheating, or losing power, pull over when it’s safe and call us.
Do you inspect a used car where the seller has it?
Yes. We come to wherever the vehicle is parked and check it over before you hand over any money. A pre-purchase inspection is $150.
Other services we bring to you
Starting System Repair
Batteries, starters, alternators, and ignition problems fixed on-site.
Brakes & Suspension
Pads, rotors, shocks, and struts replaced in your driveway.
Cooling System Repair
Radiator, water pump, and hose repair with accurate leak diagnosis.
While we’re there: add an oil change or a fluid check to any repair visit.
Mobile diagnostics are available in Stockbridge, McDonough, Decatur, Atlanta, and across Henry, Clayton, Fulton, DeKalb, and Rockdale Counties.
New customers only
Check engine light on? Get 10% off labor on your first service.
Mention this offer when you call or text to book.