Mercedes-Benz Launches Series Production of Axial Flux Motors: Supply Chain & Procurement Impact

1. What Changed (Last 30 Days)

The transition of Axial Flux Permanent Magnet (AFPM) technology from limited-run supercars to a scalable industrial footprint represents a major turning point. Mercedes-Benz’s implementation at the Berlin-Marienfelde plant introduces a highly automated process featuring 98 discrete manufacturing steps—35 of which are completely new worldwide—overcoming long-standing assembly constraints caused by extreme magnetic forces. The facility now boasts seven production lines spanning roughly 30,000 square metres across three halls.

Production Scaling: Prototype vs. Series Production

Facility Footprint & Procurement Specs

2. Why It Matters for the Industry

For decades, the standard belief was that only radial flux motors could be reliably mass-produced. The AFPM architecture, known for its superior torque density, compact axial length, and excellent thermal characteristics, remained trapped in a "too hard to scale" perception.

The successful rollout in Berlin shatters this barrier. By solving the complex "wedding" assembly—where the stator and twin rotors are joined against massive magnetic forces—Mercedes-Benz has mapped the blueprint for industrialized AFPM manufacturing utilizing laser welding and advanced automation.

3. Impact on Buyers and Engineers

The validation of AFPM series production significantly alters the sourcing landscape and engineering design cycles for high-performance electric drives.

• For Engineers: You can now aggressively integrate AFPM systems into constrained spaces—such as industrial robotics, heavy-duty AGVs, and specialty commercial vehicles—knowing that contract manufacturers can realistically produce these designs at scale.
• For Procurement: Sourcing strategies must adapt. The focus shifts from "Can this be built?" to "Which suppliers have invested in the automation required to build this efficiently?" Supplier audits should emphasize automated line capabilities and AI-driven defect detection.

4. Risks and Boundaries

While the Mercedes-Benz milestone is historic, buyers must recognize the existing boundaries of this technology and the evidence gaps that remain:

1. Extreme Assembly Barrier: The 98-step process cannot be easily replicated by tier-2 or tier-3 motor winders. Contract manufacturers attempting to copy the process without heavy capital expenditure in specialized robotics will suffer high scrap rates.
2. Neodymium (NdFeB) Reliance: The dual-rotor topologies heavily rely on rare-earth permanent magnets. Supply chain bottlenecks for NdFeB remain a pricing and availability risk.
3. Pacing of Adoption: Currently, capacity is largely captive for high-performance automotive platforms (like the AMG GT 4-Door Coupe). Commercial off-the-shelf availability for broad industrial applications will still require lead times.
4. Evidence Gaps: Actual yield rates and cost-per-unit metrics from the Berlin-Marienfelde plant remain proprietary. Procurement teams should not assume immediate cost parity with legacy radial flux motors until broader market benchmarking data emerges in late 2026.

5. Who Should Act Now (Buyer Checklist)

For procurement leaders and system architects looking to adopt AFPM technology:

• Revise Quality Checklists: Update your supplier audit templates to require AI-vision inspection records for magnetic rotor assembly.
• Evaluate Capex Plans: Request automation roadmaps from your current motor suppliers. If they are planning entirely manual assembly for AFPM, flag them as high-risk.
• Magnet Sourcing Audits: Demand transparency on the origin and pricing strategy for NdFeB magnets, ensuring the supplier has hedging mechanisms.
• Redesign Proposals: Instruct mechanical engineering teams to explore removing gearboxes in favor of direct-drive AFPM architectures now that volume production is validated.

6. FAQ

Q: Does this mean AFPM motors will immediately become cheaper?
A: In the short term, no. The initial capital investment for automated assembly lines (like the 7 lines in Berlin) is immense. However, long-term costs will decrease as scrap rates plummet and economies of scale take effect.

Q: Can standard motor manufacturers easily switch to AFPM?
A: No. The coreless, yokeless topology requires fundamentally different tooling, especially for the "wedding" process where extreme magnetic forces must be mechanically countered using advanced robotics and laser welding.

Q: When will this affect non-automotive sectors like robotics?
A: The validation of the manufacturing process immediately de-risks the technology. We expect industrial automation and AMR manufacturers to aggressively integrate AFPMs over the next 18-24 months.

7. Sources

• Mercedes-Benz Group: "Mercedes-Benz starts large-scale production of electric axial flux motor in Berlin-Marienfelde" (June 2026). Confirms the 98-step manufacturing process, the 30,000 sqm footprint, and the initial debut in the Mercedes-AMG GT 4-Door Coupe. Read official release
• Reuters: "Mercedes launches mass production of electric motor for high-performance AMG brand" (June 9, 2026). Details the role of the oldest plant in Berlin-Marienfelde serving as the competence centre. Read more