Mercedes-Benz Launches Large-Scale Axial Flux Motor Production: What It Means for the Supply Chain

Scope and date note (reviewed July 22, 2026): This analysis covers publicly reported Mercedes-Benz and YASA production news and its global AFPM sourcing implications. It is written for OEM procurement, Tier 1 sourcing, supplier quality, and motor engineering teams; it does not claim access to Mercedes-Benz supplier specifications, yield rates, or cost data. Use it as an RFQ planning lens, then validate project-specific tolerances through magnetic loss validation, manufacturing quality evidence, and supplier PPAP or FAI data.

Teams already comparing AFPM SMC stators, SMC stator segments, and lamination or winding service routes should treat this launch as a signal that component-level repeatability is now a procurement constraint, not just a motor-design preference.

What Changed in June 2026

Until recently, the production of axial flux motors—such as those pioneered by YASA (acquired by Mercedes-Benz in 2021)—has been largely restricted to small batches or manual/semi-automated assembly lines. The geometry of a "yokeless" stator positioned between two massive magnetic rotor disks makes assembly incredibly difficult due to the powerful axial magnetic forces.

In June 2026, Mercedes-Benz fundamentally altered this landscape by operationalizing a 30,000-square-meter facility in Berlin-Marienfelde dedicated to industrial-scale AFM production.

Key Shifts in Manufacturing

Why It Matters: Overcoming the AFM Manufacturing Bottleneck

The most critical breakthrough in this new production line is the "Wedding" phase—the stage where the stator is placed between the two rotor disks. Due to the intense magnetic forces involved, the stators and rotors must be aligned perfectly to maintain uniform air gaps on both sides.

By achieving this using automated robotics and AI-powered vision controls that enforce tolerances below 0.1 mm, Mercedes-Benz has publicly demonstrated that the complexity of AFMs can be managed in volume production. This milestone matters because performance vehicles starting with the AMG.EA platform can use ultra-compact, high-torque motors at scale, while suppliers of the axial flux motor core now need evidence that their geometry, magnetic loss, insulation, and traceability controls can survive automated handling.

Impact on Buyers, Procurement Teams, and Engineers

The industrialization of the AFM introduces severe new demands on Tier 2 and Tier 3 suppliers, particularly those providing the stator core materials (whether Soft Magnetic Composites or laminated electrical steel).

For Procurement and Supply Chain Teams

Automated robotic assembly is entirely unforgiving. If a batch of SMC stators exhibits a 0.2 mm variance in thickness, human assemblers might manually shim or adjust it, but an automated line running 98 synchronized steps will instantly reject it. Procurement teams must immediately audit their suppliers' post-machining capabilities, dimensional consistency metrics, and capacity for 100% inline quality checks. Start from the SMC versus lamination sourcing tradeoff, then convert the decision into RFQ template inputs before asking for production quotes.

For Motor Design Engineers

The anxiety surrounding the "manufacturability" of axial flux topology has been reduced, but not eliminated. Engineers designing drivetrains for performance EVs, eVTOLs, or robotics can specify AFPMs with more confidence that large-scale manufacturing is physically possible. However, the design must incorporate strict DFM principles compatible with automated handling, such as proper datum surfaces, clamping points, coating controls, and inspection references. Early builds should still pass through axial flux stator prototyping before design teams treat a motor layout as production-ready.

Hard Specifications & Buyer Thresholds

With Mercedes-Benz filing over 30 new patents for this 98-step process, the technical capabilities of this line set new procurement baselines:

These thresholds are procurement implications drawn from public reporting, not Mercedes-Benz supplier requirements. For buyer teams, the practical next step is to ask whether suppliers can document stable geometry and magnetic behavior across sample, pilot, and repeat-order phases.

Risks, Evidence Gaps, and Boundaries

While the Mercedes-Benz milestone is monumental, it is crucial not to over-extrapolate the immediate impact:

1. Premium Segment Focus: This production line supports the high-end AMG.EA platform (like the AMG GT 4-Door Coupe). AFMs remain a premium technology; they will not displace radial flux motors in budget-conscious, standard passenger EVs in the short term.
2. Capital Expenditure Limits: The level of investment required for a 30,000 sqm facility with AI vision and laser welding is immense. Small-to-medium motor OEMs without deep pockets will struggle to replicate this automated setup in the next 2-3 years.
3. Supplier Shakeout Risk: Suppliers lacking high-precision CNC equipment (to face off SMC stator cores to exact dimensions) will be phased out of the AFM supply chain as automation becomes the standard.
4. Evidence Gaps regarding Yield Rates: While Mercedes-Benz has proven the automated process (handling 9 kN of magnetic force), official yield rates (scrap rates) and per-unit costs have not been publicly disclosed. Procurement teams modeling AFM costs should build in aggressive scrap buffers for the first 12-18 months of production.

AFM Supply Chain Evolution & Automation Readiness

Pre-2026

Low Volume

Manual Assembly

June 2026

Mercedes-Benz

Automated Launch

2028+

Tier 1 Proliferation

Strict Tier 2 DFM Req.

Who Should Act Now (Action Checklist)

For companies active in the electric motor supply chain:

• Stator Core Suppliers: Verify internal capabilities for machining stator faces to tolerances < 0.05 mm. If relying on raw compaction without post-processing, you will likely fail automated integration. Align evidence expectations with manufacturing quality controls.
• Procurement Directors: Initiate a supplier audit specifically targeting dimensional consistency over batches of 10,000+ units. Manual inspection is no longer sufficient; request data from inline automated metrology.
• System Integrators: Revisit any previously shelved AFM projects. The demonstration of large-scale automated assembly by an OEM validates that volume-related cost reductions are imminent.
• Teams issuing RFQs: Bring tolerance stack, magnetic loss targets, winding interface, annual volume, and validation gate assumptions into one contact/RFQ review instead of pricing each part in isolation.

FAQ

Q: Did Mercedes-Benz develop the entire axial flux motor from scratch? A: The core technology heavily leverages the yokeless and segmented armature (YASA) design developed by the UK-based company YASA, which Mercedes-Benz acquired in 2021. However, the 98-step automated production process was industrialized in-house.

Q: Can this automated process use either laminated steel or SMC stators? A: Both materials can theoretically be used in AFMs. However, SMC (Soft Magnetic Composites) is highly favored for the yokeless segments due to its 3D magnetic isotropy and reduced manufacturing complexity compared to folding laminations.

Q: Which vehicles will first receive these mass-produced motors? A: The motors produced at the Berlin-Marienfelde facility are slated for the upcoming all-electric Mercedes-AMG GT 4-Door Coupe and other models built on the performance-oriented AMG.EA platform.

Sources

1. Mercedes-Benz begins axial flux motor production in Berlin (Electrive, June 10, 2026)
2. Mercedes-Benz starts axial flux motor production in Berlin (Automotive World, June 9, 2026)
3. Mercedes-Benz Starts Axial Flux Motor Production in Berlin (The EV Report, June 11, 2026)
4. Large-scale production of electric axial flux motor (Mercedes-Benz Group, June 9, 2026)
5. YASA 59 kW/kg axial flux motor benchmark (YASA, Oct. 22, 2025)

The sources above confirm public facility, process, platform, and prototype-performance claims. They do not disclose Mercedes-Benz yield rates, per-unit costs, supplier allocation, or released supplier drawings; buyer thresholds in this article are Axialfluxcore procurement implications.