Choosing the Right Tool for You — IM608PRO II vs IM508S PRO vs IM508S

When shopping for a professional-grade key programming and diagnostic tool, it’s important to choose the one that truly fits your needs, skill level, and budget. Autel offers a versatile lineup of IMMO tools, each designed for a different type of user — from entry-level locksmiths to seasoned automotive professionals.

In this article, we’ll compare four of the most popular models in the Autel IMMO lineup: IM608 PRO II (also known as IM608S II), IM508S PRO, IM508S, and KM100 — to help you make an informed decision.

🧠 Quick Guide To Find Your Best Tool

KM100: Ideal for new locksmiths, mobile work, or budget-conscious users.
IM508S: Great for small workshops or technicians needing basic IMMO & diagnostics.
IM508S PRO: A solid middle ground with more key programming power—without the cost of the IM608 series.
IM608S II / IM608 PRO II: Best for professionals who need full-featured IMMO and advanced OE-level diagnostics. The most powerful models available.

Still not sure?

KM100:

Best Entry-Level Option for Beginners and Mobile Use

If you’re new to key programming or simply need a fast, portable solution, the Autel KM100 is the best tool to start with. It’s compact, lightweight, and extremely easy to use — perfect for locksmiths who need to work on the go. Despite being just a fraction of the price of full-sized tablets, the KM100 delivers impressive functionality and high value. No wonder it's consistently a bestseller among beginner technicians and mobile professionals.

✔ Beginner-friendly	✔ Ultra-portable
✔ High cost-efficiency	✔ Instant start-up

IM508S:

Affordable Tablet with Basic IMMO + Diagnostics

Need a balance between affordability and functionality? The Autel IM508S is a tablet-based tool that offers essential diagnostic functions along with basic IMMO and key programming features. It’s ideal for smaller workshops or technicians who don’t need full advanced IMMO functions

IM508S PRO:

A Powerful Enhancement in IMMO Capabilities

For enhanced IMMO capabilities, pairing the IM508S with the XP400 key programmer will unlock a broader range of vehicle coverage — comparable to the IM608.

✔ Powerful Hardware	✔ Wide Key Support
✔ Advanced IMMO	✔ OE-Level Diagnostic
✔ Bi-Directional Control	✔ 40+ Services
✔ FCA AutoAuth	✔ 2 Years Free Updates
✔ Smart & Expert Modes

IM608S II / IM608 PRO II:

For Professionals Who Want It All

If you demand maximum power, vehicle coverage, and advanced diagnostics, the IM608S II / IM608 PRO II is the tool for you.
The latest IM608 PRO II (also known as IM608S II) represents the top-tier model. It features upgraded hardware and software, combining powerful IMMO functions, key programming, OE-level diagnostics, and advanced service functions — all in one professional-grade tablet.

✔ High-Performance Hardware	✔ Broad Vehicle Coverage
✔ Enhanced Usability	✔ XP400 Pro Integration
✔ Professional ECU Coding	✔ 40+ Maintenance Functions
✔ FCA AutoAuth & Cloud Reports	✔ Advanced IMMO & Key Programming

📊 Comparison Overview

🛠️ IMMO Functions:
IM608 PRO II > IM508S PRO > IM508S > KM100

🔍 Diagnostic Functions:
IM608 PRO II > IM508S PRO = IM508S
(IM608 Series ≈ Autel MS908, IM508 Series ≈ Autel MK808)

🧰 Service Functions:
IM608 PRO II > IM508S PRO = IM508S > KM100

💻 Hardware Performance:
IM608 PRO II > IM508S PRO = IM508S > KM100

View the comparison table below.

	IM608 PRO II Same As IM608S II	IM508S PRO = IM508S + XP400PRO	IM508S	KM100 🔥JUST $377!

Hardware
Appearance	Touch screen tablet	Touch screen tablet	Touch screen tablet	Touch screen handset
Connection	JVCI+	OBD Cable	OBD Cable	Bluetooth
Processor	Qualcomm SDM660 Octa-core	Cortex-A55 processor	Cortex-A55 processor	PX30 4x ARM Cortex-A35
Screen	10.1-inch	7-inch	7-inch	5.5-inch
WiFi	√	√	√	√
Bluetooth	V5.0+BR/EDR	×	×	√
System	Android 10.0	Android 11.0	Android 11.0	Android 9.0
Memory	4G+128G	4G+64G	4G+64G	2G+64G
Battery	15000 mAh	5000 mAh	5000 mAh	4950mAh
Microphone	1MIC	×	×	×
Headphone Jack	√	×	×	×
Loudspeaker	2	×	×	×
GPS	√	×	×	×
Camera	16.0 Megapixel	×	×	×
Programmer	XP400PRO	XP400PRO	XP200	×
Diagnostic Functions
Auto Scan	√	√	√	√
Diagnostic Level	Medium	Basic	Basic	/
Reading/ Erasing codes	√	√	√	×
Read Live Data	√	√	√	×
Read Freeze Data	√	√	√	×
Read ECU info	√	√	√	×
Active Test	√	√	√	×
Services	√ 40+	√ 40+	√ 28+	×
Special Function	√	√	√	×
Online Coding	√ (Mercedes-Benz vehicles are not covered)	×	×	×
Offline Coding	√	×	×	×
Hidden Function	√ (Mercedes-Benz vehicles are not covered)	×	×	×
Guided Function	√ (Mercedes, BMW, JLR vehicles are not covered)	×	×	×
Offline Programming	√	×	×	×
Report Manage	√	√	√	×
Keytool Functions
Universal key Generation	√	√	√	√
Transponder Generation	√ Need Programmer	√ Need Programmer	√ Need Programmer	√
Chip Simulation	√ Need APB112	√ Need APB112	√ Need APB112	√ Built-in APB112
Programmer Functions
IMMO Scan	√	√	√	√
Reading/Writing EEPROM	√	√	√ (less coverage)	×
Reading/Writing MCU	√	√	√ (less coverage)	×
Reading/Writing Engine ECU	√	√	√ (less coverage)	×
Reading/Writing IMMO ECU	√	√	√ (less coverage)	×
Frequency Detection	√	√	√	√
Write key to ECU by programmer	√	√	√
Remote Expert	Advanced	×	×	×
Other Functions	SCAN VIN SCAN License Remote Desk DoIP CANFD	Remote Desk CANFD（Adapters required）	Remote Desk CANFD（Adapters required）	×

By now, you’ve explored the key differences between the IM608 PRO II, IM608S II, IM508S, and KM100 — and hopefully found the perfect tool that fits your needs and budget.

If you’re confident in your choice, you can move forward with confidence knowing you have the right Autel IMMO tool to tackle your automotive diagnostics and key programming tasks.

However, if you have special requirements or unique vehicle models that need support beyond what’s listed here, please don’t hesitate to contact us directly. Our experts are ready to help you find the exact Autel IMMO tool that meets your specific needs.

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Your perfect key programming solution is just a message away!

[2-Yr Plan] Buy IM608S II

[1-Yr Plan] Buy IM608S II

[2-Yr Plan] Buy IM508S PRO

[1-Yr Plan] Buy IM508S PRO

[2-Yr Plan] Buy IM508S

[1-Yr Plan] Buy IM508S

[Lifetime Free] Buy KM100