Selecting the correct transponder chip is essential for successful key programming using tools such as the VVDI Mini Key Tool, Key Tool Max Pro, or VVDI2. Xhorse’s XT27A, XT27B, and XT57B represent the most popular “Super Chips” for generating 4A/4C/4D/46/47/48 and newer 8A transponders. This guide clarifies their distinctions to support your purchasing decision.
XT27A vs XT27B vs XT57B Guide
| Feature | XT27A | XT27B | XT57B |
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| Positioning | Foundational multi-protocol chip | Stability-enhanced chip | Advanced reusable chip |
| Key Protocols | PCF7930-7939, ID46, ID48, 4C, 8A, 8H | All XT27A protocols + ID49, 4A | All XT27B protocols + ID4A, ID5C, MQB ID48 |
| Main Improvements | – | 1. Improved stability &consistency 2. Optimized PCF7935 performance 3. Added VW 4A/49 support |
1. Latest ID5C support 2. MQB platform compatible 3. Rewritable & reusable |
| Best For | Users focusing on legacy & common vehicle models | Most professional locksmiths (seeking balance of cost & proven performance) | Advanced users & shops dealing with newer/high-end vehicles |
| Cost Efficiency | Cost-effective for supported protocols | Excellent (optimal balance of features and reliability) | Higher initial cost, but reusable for long-term efficiency |
XT27A: The Foundational Multi-Protocol Chip
The XT27A established the series, providing broad support for common protocols including PCF7930-7939, ID46, ID48, 4C, and 8A/8H for Toyota and Hyundai models. It serves as a capable and economical solution for many standard cloning and programming tasks.
Typical Use Case: A practical choice for users whose work primarily involves older or commonly encountered vehicle models, where its protocol coverage meets most requirements.
XT27B: The Reliable Daily Performer
The XT27B builds upon the XT27A’s foundation with enhanced stability and added protocol support, including ID49 and 4A (important for Volkswagen applications). Its optimized handling of chips like the PCF7935 improves success rates in cloning operations.
Pros: Demonstrated reliability, expanded Volkswagen support, consistent performance across a wide vehicle range
Ideal User: Professional locksmiths and technicians seeking a dependable, well-rounded chip for the majority of everyday jobs
XT57B: The Advanced Future-Proof Solution
The XT57B represents the premium offering, introducing support for newer protocols such as ID4A and ID5C, along with specific MQB-platform ID48 compatibility. Its defining feature is rewritability, allowing the chip to be erased and reused multiple times within defined limits.
Pros: Support for the latest protocols, MQB platform compatibility, reusability for reduced long-term consumable cost
Ideal User: Busy professional shops frequently servicing newer European vehicles (particularly VW MQB platforms), or users prioritizing maximum flexibility and forward compatibility
Practical Recommendations
- For Standard and Legacy Vehicle Work: The XT27A provides a cost-effective solution with solid protocol coverage for many models.
- For Professional Daily Use: The XT27B is recommended for its proven reliability and broader protocol support, representing an excellent balance for most workshops.
- For Advanced and High-Volume Applications: The XT57B offers the latest protocol support and reusability, making it a strategic long-term investment for shops focused on newer vehicle technologies.
Conclusion
Choosing among Xhorse Super Chips depends on your typical vehicle profile and operational needs. The XT27B delivers reliable, broad-spectrum performance suitable for most professional scenarios. The XT57B is the strategic choice for future-proofing and handling the latest vehicle systems, while the XT27A remains a viable option for specific, cost-sensitive applications involving legacy models.