When investing in professional Automotive Diagnostic System Tools, choosing the right device can significantly impact your workflow and profitability. OTOFIX offers two prominent devices: the D1 (a dedicated diagnostic scanner) and the IM1 (a combined diagnostic and key programming system).
This review provides a neutral, hands-on comparison based on real-world testing to help technicians, auto locksmiths, and advanced DIYers decide which tool best fits their needs. Testing was performed on a BMW F30 3 Series to evaluate immobilizer and diagnostic functions.
Key Specifications at a Glance
| Feature | OTOFIX D1 | OTOFIX IM1 |
| Image |  |
 |
| Primary Function | Full-system diagnostics & service | Key programming & ECU replacement, plus diagnostics (optional) |
| Included Hardware | Tablet, OBD cables, basic dongle | Tablet, key programmer, EPROM reader, adapters, case |
| Operating System | Android 9 | Android 9 |
| Processor | 4x ARM Cortex-A35(1.5GHz) | 4x ARM Cortex-A35(1.5GHz) |
| Screen Display | 7-inches | 7-inches |
| Storage | 2G+64G | 2G+64G |
| Camera | Rear 8M | Rear 8M |
| Battery | 5800mAh | 5800mAh |
| Diagnostics & Service | Included (full functions) | Optional |
| Key Programming | Not Available | Included (full immobilizer functions) |
| ECU Replacement | Not Available | Included (for supported brands) |
| BMW Key Support | No | Yes (CAS, FEM/BDC, smart keys) |
| Approx. Price | €459 | €699 |
| Best For | General repair shops, daily diagnostics | Locksmiths, ECU specialists, BMW-focused workshops |
Detailed Comparison & Hands-On Testing
- Hardware & Build Quality
Both devices share the same core tablet, which is responsive and well-built. The IM1, however, comes in a larger hard case containing the key programming station, an EPROM reader, and multiple adapters for bench work. The D1 package is more streamlined, focusing solely on OBD-II connectivity.
Test Note: During testing on the BMW F30, the IM1’s EPROM adapter was needed to read the FEM module directly, a task the D1 cannot perform.
- Software & Functions
Otofix D1: Provides comprehensive OEM-level diagnostics, coding, and adaptations for a wide range of brands. It’s a pure diagnostic tool.
Otofix IM1: Boots with a menu focused on “Immo Programmer,” “Key via Dump,” and “ECU Replacement.” Its core value is in these specialized areas. Diagnostics are an add-on.
Test Note: Both tools successfully performed full scans on the BMW F30. The IM1 required the subscription to access advanced diagnostic live data and coding.
- Key Programming & IMMO Capabilities
This is the decisive difference. The IM1 is designed for generating and programming keys. It supports:
- Reading ISNs via OBD or bench (using included EPROM tools)
- Programming keys for BMW (CAS 1-4, FEM/BDC), VW, Toyota, Ford, and others
- ECU cloning for supported brands (BMW support is announced but not yet live)
The D1 has no hardware or software for key-related tasks.
- Cost & Value Analysis
Otofix D1 (€459): You pay for a complete, ready-to-use diagnostic scanner. No hidden fees.
Otofix IM1 (€699): You get a full key programming suite. If you also need diagnostics, the total investment may rise.
For a user who already owns a diagnostic tool, the IM1 is a powerful and reasonably priced add-on. For a user starting from zero, the total cost of a fully-equipped IM1 is higher.
Conclusion & Recommendation
Choose the Otofix D1 if:
- Your primary need is daily, in-depth vehicle diagnostics, coding, and servicing.
- You do not handle key programming, key loss cases, or ECU replacement.
- You prefer a simpler, all-inclusive purchase with no subscriptions.
Choose the Otofix IM1 if:
- You are an auto locksmith or frequently handle key programming jobs.
- You specialize in ECU repair and replacement.
- You work extensively on BMW, Mercedes, VW, or other European brands that commonly require bench programming.
- You are willing to add the diagnostics subscription for a true all-in-one device, or you already own a separate diagnostic scanner.
Final Verdict:
Both tools are well-made and perform their intended functions reliably. There is no “better” tool — only the right tool for your specific work. The D1 is a specialist in diagnostics, while the IM1 is a specialist in programming and immobilizer systems. Your business needs should dictate the choice.
For workshops that encounter both diagnostic and key-related issues regularly, investing in the IM1 and unlocking its diagnostic functions may provide the most complete, long-term solution in a single tablet.
Contact Info:
Email: sales@AutelShop.de
Wechat: +86-13429866263
Whatsapp: +86-13429866263