Choosing between CGDI A2 key programmer and Keydiy KD-X4 5-in-1 key programmer for adding keys to BMW G-Series vehicles with BDC2 system? Both tools are capable, but they have key differences in approach and performance. This comparison breaks down the critical factors to help you select the right tool for your workshop.
Comparison table:
| Item | Keydiy KD-X4 | CGDI A2 |
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| Price | €591 | €675 |
| Operation | Based on App or PC software | Tablet, Standalone |
| Primary Focus | Universal key/remote recognition, remote generation, copying, simulation, key programming | IMMO matching, key programming for specific brands; frequency detection |
| Connection | Bluetooth/OTG to mobile/tablet (KD App); USB to PC; USB | WiFi, USB |
| Language | App supports Multilanguage, 19 languages | English, Chinese |
| Subscriptions | No annual subscription. Points/tokens for advanced functions (e.g., BMW add-key: 200 points/$4); app-based license purchases | No Annual Subscription. Optional Mercedes FBS3 license; free daily tokens for some functions |
| Vehicle brands | 56+ brands | Supports password-free and disassembly-free matching for most vehicle models. |
| Detect frequency | Yes | Yes |
| ID48 96bit cloning | Yes, 100 KD coins or 10 USD per calculation | – |
| BMW Immobilizer | Yes, BMW CAS1-CAS4, FEM/BDC, BDC2, BDC3. FEM/BDC, BDC2 and BDC3 require same license. 5000KD coins or 150USD. | Yes, CAS1-CAS4, FEM/BDC, BDC2 (Not yet support BDC3) |
| Benz Immobilizer | – | With FBS3 license. Supports EIS, calculate password, Read/write key, Benz ELV, ECU and gateway functions. |
| VAG MQB48 & MLB | Yes, need to activate MQB48 and MLB license. Each MLB add key require 200 KD coins. | MQB48 yes, MLB No |
| Audi BCM2 encrypted key programming | Yes, 2500KD Coins/75USD to activate license | – |
| Volvo CEM | Yes, 3500 KD-Coins/50USD to activate license | Yes |
| Toyota 8A Blade key AKL | Yes with 8A blade key AKL cable | Yes |
| Toyota 8A smart key programming | Yes | Yes, Toyota 8A/4A smart key |
| Jaguar Land rover 2018-2024 Key programming | Yes, supports JPLA / K8D2 / J9C3 / M9R3 systems | – |
| BYD all keys lost | Yes, 100 KD coins each time | Yes |
| Program Toyota second hand key without unlocking | Yes, 200 KD coins or 5 USD | – |
| Generate remote | Yes, generate KD remote | – |
| Remote Unlock | Yes | – |
| Yamaha ID47/ID49 motorcycle key barcode retrieval | Yes | |
| Nissan B18 28-digit pin code | Yes | With 40-PIN cable to bypass pin code. |
| CAN FD protocol | Yes | Yes |
In conclusion:
Making a choice between Keydiy KD-X4 and CGDI A2 depends entirely on your specific workshop needs. Here is our straightforward purchase advice.
Who should buy Keydiy KD-X4 key programmer?
Invest in KD-X4 if your priority is:
- Programming keys for the latest BMW models with BDC3
- A tool with extensive coverage across multiple car brands.
- Generating and programming advanced remote keys.
- An interface that supports multiple languages.
Who should buy the CGDI A2?
CGDI A2 is your best bet if you need:
- The best-in-class solution for Mercedes key programming.
- A convenient all-in-one device with its own screen, no phone required.
- A tool that is often more economical on a per-job basis.
Ultimate Solution:
For professional locksmiths who demand the widest possible vehicle coverage and functional range, owning both KD-X4 and CGDI A2 is the recommended path to eliminate limitations.
