Engine Diagnostic in the area around Coconut Grove, Miami, FL averages $104.00, with prices ranging from $49.95 to $149.99 based on 34 verified prices from 34 nearby shops.
Showing nearby shops within 25 mi of Coconut Grove · June 2026
Engine Diagnostic prices in Coconut Grove, Miami, FL range from $49.95 to $149.99 at local auto repair shops, based on verified pricing data gathered from 34 shops across the area. An engine diagnostic (also called a 'check-engine diagnosis' or OBD-II scan) reads fault codes from the vehicle's onboard diagnostic system, which monitors hundreds of engine, transmission, and emissions parameters. Prices for this service in Coconut Grove vary by vehicle make and model, the grade of parts and fluids used, and whether you book with an independent shop, a franchise chain, or a dealership. Independent and chain repair shops in Coconut Grove typically charge 20 to 40 percent less than dealerships for this service; dealerships may justify the premium for warranty-covered work or brand-specific diagnostics. All prices listed on this page were verified directly from shop websites or user-submitted receipts, and each carries a Last Verified date. For details on how PriceMyFix verifies prices, visit pricemyfix.com/about/methodology.
| Shop | Type | Price | Details | Verified | Distance | Actions |
|---|---|---|---|---|---|---|
| Land Rover Coral Gables155 South Dixie Highway | Dealership | $129.95Above avg | Last verified 40 days agoby PriceMyFix | 0.9 mi | View Shop | |
| HGreg Lux Doral8505 Northwest 12th Street | Dealership | $99.99 | Last verified 34 days agoby PriceMyFix | 6.9 mi | View Shop | |
| Dadeland Dodge Chrysler Jeep Ram16501 South Dixie Highway | Dealership | $129.95Above avg | Last verified 40 days agoby PriceMyFix | 10.0 mi | View Shop | |
| Super Autos Hialeah West4015 West 16th Avenue | Dealership | $125.00Above avg | Last verified 40 days agoby PriceMyFix | 10.0 mi | View Shop | |
| Florida Fine Cars21151 Northwest 2nd Avenue | Dealership | $49.95CouponBelow avg | Verified todayby PriceMyFix | 16.9 mi | View Shop | |
| Start Auto Group3500 South State Road 7 | Dealership | $89.99 | Last verified 40 days agoby PriceMyFix | 17.5 mi | View Shop | |
| JP AUTOS1600 North State Road 7 | Dealership | $75.00Below avg | Last verified 40 days agoby PriceMyFix | 20.6 mi | View Shop |
The average engine diagnostic in Coconut Grove, Miami, FL costs $99.98 across 7 shops. The cheapest verified price is $49.95 at Florida Fine Cars.
Trucks and SUVs with higher oil capacity may cost more. Check individual shop listings for vehicle-specific pricing.
An engine diagnostic (also called a 'check-engine diagnosis' or OBD-II scan) reads fault codes from the vehicle's onboard diagnostic system, which monitors hundreds of engine, transmission, and emissions parameters. When a sensor reads outside its expected range, the ECU logs a fault code (P0XXX format) and illuminates the check-engine light. A diagnostic reads these codes but does not automatically identify the repair — it narrows down the system affected. A thorough diagnosis also includes live data analysis (sensor readings in real time), symptom correlation, and in some cases additional tests (compression test, smoke test, fuel pressure test) to confirm the root cause.
Immediately when: (1) the check-engine light is solid (not flashing) — this indicates a non-critical fault that should be addressed soon, (2) the check-engine light flashes — this is an active misfire causing catalyst damage; stop driving immediately if it's flashing rapidly, (3) you notice a specific drivability symptom (rough idle, hesitation, poor MPG, stalling) even without the light, as some sensor failures don't trigger the light until they worsen, (4) before buying a used vehicle — a scan at a shop or self-scan reveals hidden fault codes the seller may not have disclosed.
It depends entirely on what's causing the light. Most solid check-engine lights are minor — an EVAP leak (loose gas cap), an O2 sensor reading slightly off, or a knock sensor fault — conditions that won't leave you stranded or cause immediate damage. A flashing check-engine light is different: that's an active misfire that sends unburned fuel into the catalytic converter, which overheats and fails. Cat replacement at $1,000–$2,500 is the near-term consequence; delayed, the catalyst material melts and can be ingested into the engine. Never drive more than a few miles with a flashing light.
Diagnostic pricing and recommendations vary more than almost any other service: (1) most shops charge $75–$120 for diagnosis; some waive or credit it if you authorize the repair — ask upfront, (2) reading a code yourself with a $25 Bluetooth OBD adapter (Torque Pro, Car Scanner) tells you the code; it does not tell you the root cause or whether the repair a shop recommends actually addresses it, (3) P0420 (catalyst efficiency below threshold) is one of the most frequently misdiagnosed codes — shops often recommend a $1,500 catalyst when the actual fault is a failing O2 sensor ($150–$300), (4) any shop that gives a repair quote based solely on the code without additional testing (live sensor data, component tests) for codes that can have multiple causes deserves a second opinion.
All prices verified from public sources and user submissions. Learn about our verification methodology.
