New: OBD2 live data capabilities are here
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Real Data
Do a Drive Test
Download Free
Go Pro — $4.99/mo
Get Lifetime — $79.99
BUILT FOR THE PEOPLE WHO FIX CARS →
Pro Technicians
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Mobile Mechanics
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Repair Shops
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Fleet Managers
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DIY Owners
Real Data
Real Answers
Plug in. Drive. Let Tina diagnose.
WORKS WITH POPULAR OBD2 ADAPTERS
OBDLink | Veepeak | vGate | and more →
Do a Drive Test
Tina Takes It From There
Live data. Real driving conditions. A smarter diagnosis.
Tina
Diagnoses your vehicle based on real-world drive data and tells you how to fix it.
- Step-by-step repair guidance
- Parts recommendations (eBay & Amazon)
- Helpful videos
More than codes.
A clear path to a fix.
THE DIAGNOSTIC WORKFLOW
From symptom to confirmed fix
01
Connect or Describe It
Plug in an OBD2 adapter for a live scan and drive test, or just enter year, make, model and your symptoms — no adapter required.
02
Run AI Scan
Tina AI analyzes the vehicle and the customer concern in seconds — no plug-in required.
03
Rank Causes
Get probable causes ranked by probability, the most likely fault first, in plain English.
04
Guided Tests
Follow a step-by-step test plan: what to check, why, the tools needed and expected results.
05
Document & Report
Log actual results, then generate a professional report or invoice to share in seconds.
CAPABILITIES
Everything you need to nail the diagnosis
Powerful enough for a master tech. Clear enough for a first-time DIYer.
Personalize The Look Of Your AI Assistant In Settings!
Live OBD2 Data & Drive Tests
Connect a Bluetooth OBD2 adapter and Tina reads live data straight from the vehicle during a real drive test — see supported adapters →
AI Scan & Tina Assistant
Tina analyzes the vehicle, the customer concern and any codes — far beyond a single code definition — then stays available to talk through findings, build plans and write reports.
Causes Ranked by Probability
Every scan returns the most likely faults first, each with a clear probability and plain-English reasoning.
Step-by-Step Test Plans
Recommended tests tailored to the scan: what to check, the purpose, and the exact results to expect.
Document Every Result
Record each procedure, log actual vs expected readings, and attach notes or photos so nothing slips.
Reports & Invoices
Turn a session into a professional report or itemized invoice in seconds — then email, print or save.
APP GALLERY
See EngineIQ in action
GET THE MOST OUT OF ENGINEIQ
Best practices for better diagnostics
EngineIQ is a support tool — not a replacement for proper testing. Follow these practices to get the most accurate results and avoid unnecessary part replacements.
01Enter symptoms clearly and specifically — the more detail, the better the analysis.
02Include exact trouble codes when available, not just a general description.
03Add freeze-frame data if your scanner captured it when the code was set.
04Follow the workflow step by step — don't skip ahead to the repair.
05Never replace a part without first confirming it as the root cause.
PRICING
Start free. Upgrade when you're ready.
EngineIQ doesn't charge you to read a code. We charge for helping you confidently fix the right thing — the first time.
FREE FOREVER
NO CREDIT CARD
Free
$0/forever
Start diagnosing immediately. No card required, no expiration.
✓Unlimited DTC lookups & symptom entry
✓Ranked causes by probability
✓Severity level for each code
✓1 recommended first diagnostic test
✓3 Tina AI conversations included
✓Save 1 vehicle
✓Basic diagnostic history
No credit card · No expiration
MOST POPULAR
SAVE 33% YEARLY
Pro
$4.99/mo
or $39.99/yr — save 33%
The complete diagnostic experience — powered by Tina AI. Cancel anytime.
✓Everything in Free
✓Unlimited Tina AI conversations
✓Complete ranked probability + reasoning
✓Full guided diagnostic workflows
✓Freeze-frame & live PID interpretation
✓Unlimited vehicle storage
✓Full diagnostic history — all vehicles
✓Repair verification checklists
✓Maintenance tracking & reminders
✓Reports & invoices
✓Priority access to new features
Or $39.99/yr · Save 33% · Cancel anytime
ONE-TIME
PAY ONCE
Lifetime
$79.99/once
Pay once, own Pro forever. No renewals, no subscriptions.
✓Everything in Pro
✓One payment, no recurring billing
✓All future Pro features included
Pay once · Own it forever
FROM THE BAY
Techs who stopped guessing
★★★★★
"Entered the symptoms and codes, and the ranked causes nailed it in under ten minutes. Saved me an hour of chasing."
MR
Marcus Reyes
Mobile mechanic · TX
★★★★★
"We stopped throwing parts at problems. Confirming the fault with the test plan before ordering cut our comeback rate way down."
DL
Dana Lowe
Shop owner · OH
★★★★★
"I'm not a tech, but Tina walked me through testing my own truck step by step. Saved me a $400 diagnostic fee."
JP
Jordan Patel
DIY owner · CA
QUESTIONS
Frequently asked
What's included in the Free plan?+
The Free plan includes unlimited DTC lookups, symptom entry, ranked causes by probability, severity levels, one recommended first diagnostic test, 3 Tina AI conversations, 1 saved vehicle, and basic diagnostic history. No credit card required — ever.
What's the difference between monthly, yearly and lifetime Pro?+
The monthly Pro plan is $4.99/mo. The yearly Pro plan is $39.99/year — that's the equivalent of $3.33/mo, saving you 33% compared to paying monthly. Lifetime is a single $79.99 payment for Pro access forever, no renewals. All three include the full Pro feature set.
Can I cancel anytime?+
Yes. Cancel anytime from your account settings — or through Apple App Store or Google Play depending on where you subscribed. You keep access through the end of your current billing period.
Do I need an OBD2 scanner?+
No — EngineIQ 360 works without any hardware. You can enter symptoms, codes and observations manually and get a full analysis. But if you connect a Bluetooth OBD2 adapter, Tina can pull live data straight from your vehicle and run a guided drive test, which sharpens the diagnosis considerably.
What is Tina AI?+
Tina is your conversational diagnostic technician. Talk or type to her at any point — she explains faults, recommends tests, lists the tools you'll need, tells you the expected readings, and verifies the repair worked.
I was charged but can't access Pro features — what do I do?+
Contact us at support@engineiq360.com with your full name, the email on your account, the platform you subscribed through, the charge date, and a screenshot of your receipt. We'll get it sorted quickly.