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Article Highlights:
IMDS was established by major automotive manufacturers to track the full material composition of every part that goes into a vehicle. When suppliers submit documentation into IMDS, they’re providing a structured, substance-level breakdown of what a component is made of, all the way down to individual chemical constituents and their percentage by weight.
Before you can simplify your IMDS workflow, it helps to establish the factors most often responsible for gumming it up and slowing it down. A few patterns show up again and again, including manual substance lookups, disconnected data collection methods, and a reactive approach to IMDS submissions.
It's worth stepping back and remembering why IMDS submissions carry so much weight in the first place. Automotive OEMs use this data to comply with End-of-Life Vehicle directives, to screen for substances of very high concern (SVHCs) under REACH, and to meet restricted substance requirements that vary by region.
It’s an all-too-familiar scenario, one experienced by countless supply chain and compliance professionals working in the auto sector. A deadline is approaching, a customer is asking for material data, and your team is trying to reconcile part numbers, substance thresholds, and module structures from different spreadsheets. This is the reality of working with IMDS, the International Material Data System that nearly every automotive original equipment manufacturer (OEM) in the world requires from its suppliers. It's not optional, it's not going away, and for most companies it remains one of the more challenging aspects of their compliance purview.
The good news is that IMDS submissions get dramatically easier once you understand where the friction in your process is actually coming from. This isn't about finding a shortcut around the system, though: IMDS exists for good reasons, and OEMs rely on the data it generates to meet their own regulatory obligations. Rather, reducing the lift associated with IMDS is about making the submission process less manual—and therefore less error-prone—as well as less dependent on the institutional knowledge of a single professional.
What IMDS Actually Requires
IMDS was established by major automotive manufacturers to track the full material composition of every part that goes into a vehicle. When suppliers submit documentation into IMDS, they’re providing a structured, substance-level breakdown of what a component is made of, all the way down to individual chemical constituents and their percentage by weight. That data then rolls up through the supply chain so an OEM can answer questions about recyclability, restricted substances, and regulatory compliance across an entire vehicle, which can involve tens of thousands of individual parts.
Accessing composition information on all of these parts is typically where the greatest challenge lies. A single component might be a "semi-component" built from multiple materials, each with its own data sheet, that all require separate substance declarations. Multiply that by a full bill of materials (BOM) and it's easy to see why IMDS submissions consume so much time and bandwidth among suppliers.
Smaller manufacturers, in particular, often don't have a dedicated compliance team to do all this arduous due diligence work. This often means that IMDS work gets pushed onto someone whose primary job could be anything from quality control to engineering to supply chain procurement.
Why Do IMDS Submissions Go Wrong?
Before you can simplify your IMDS workflow, it helps to establish the factors most often responsible for gumming it up and slowing it down. A few patterns show up again and again:
Inconsistent Module Structuring
IMDS uses a nested module system. If your components aren't structured consistently across submissions, you end up rebuilding them every time, instead of reusing what already exists. Suppliers who don't standardize their module templates end up doing the same categorization work over and over throughout the IMDS submissions process.
Manual Substance Lookups
Pulling substance data from safety data sheets, supplier declarations, and internal test results by hand is slow and tedious. It’s also where transcription errors can often creep in. A misplaced decimal in a percentage-by-weight field can trigger a rejection or, worse, get missed entirely and surface later as a compliance gap.
Disconnected Recordkeeping
Many teams manage IMDS submissions separately from their broader compliance tracking, including REACH, RoHS, and conflict minerals reporting. This is somewhat counterintuitive, given the fact that the underlying material data overlaps significantly between these different regulatory responsibilities. That disconnect means the same substance information gets researched and entered multiple times across different systems.
Reactive Submission Timing
Waiting for a customer request to trigger an IMDS submission puts your team in a constant state of catch-up. If material data isn't already organized before the request comes in, you're always starting from zero under a fixed, urgent deadline.
A Simpler Approach to IMDS Submissions
None of the problems outlined above are unique to a single organization. Instead, they’re structural issues embedded in how material data reporting has traditionally been handled. Addressing these issues required a more holistic, centralized approach.
Start by treating your material composition data as a reusable asset rather than a one-time deliverable. When you build out a component's substance breakdown for an IMDS submission, that data has value beyond that single request. If it's stored in a central system rather than a single, disconnected IMDS export, you can reference it the next time a similar component needs to be submitted through IMDS. Teams can also use the same underlying data to support REACH SVHC screenings or RoHS declarations without researching substances from scratch for every compliance obligation.
Second, standardize your module templates early. If you're a supplier that produces similar component families repeatedly, build out module structures once and reuse them. Standardizing in this way eliminates a significant share of the manual work that makes IMDS submissions so time-consuming.
Third, build substance data verification into your intake process rather than during the submissions themselves. When a new component or material enters your BOM, that's the moment to capture and validate its composition data (as opposed to when a customer sends an IMDS request with a deadline attached). Suppliers who capture this data upstream consistently report faster turnaround on IMDS requests, in large part because the heavy lifting has already been done.
Finally, look for tools that connect material compliance data to the rest of your supply chain risk picture. IMDS data doesn't exist in a vacuum. The same components you're reporting on also carry lifecycle risk, sourcing risk, and regulatory exposure that your team is likely tracking somewhere else. When material data and supply chain risk intelligence live in separate systems, your team ends up doing duplicate research and missing insight into how a part's composition connects to its risk profile.
Why IMDS Goes Beyond Submissions
It's worth stepping back and remembering why IMDS submissions carry so much weight in the first place. Automotive OEMs use this data to comply with End-of-Life Vehicle directives, to screen for substances of very high concern (SVHCs) under REACH, and to meet restricted substance requirements that vary by region. A late or inaccurate IMDS submission doesn't just create friction with a customer. It can hold up a part approval, delay a program launch, or create downstream compliance exposure for the OEM that your inaccurate data feeds into.
That's part of why getting IMDS right matters more today than it did even a few years ago. Regulatory scrutiny on material transparency has only increased over the past decade, and OEMs are pushing more of that verification responsibility down to their direct and sub-tier suppliers. Manufacturers who can respond to IMDS requests quickly and accurately are, in a very practical sense, easier to do business with. That reputation can strengthen a supplier’s positioning in the auto manufacturing sector, garnering more customers, business, and revenue over time.
Making IMDS Part of Your Broader Compliance Strategy
The suppliers who handle IMDS effectively aren't necessarily the ones with the biggest compliance teams. They're the teams who've stopped treating IMDS as an isolated fire drill and started understanding it as part of a larger material compliance framework. Once your substance data, module structures, and compliance records live in one place—rather than scattered across spreadsheets and email threads—IMDS submissions stop being a bottleneck and become a more predictable, routine part of your workflow.
Compliance tool Z2 can help businesses get to this point, where IMDS submissions flow naturally out of a larger compliance program. Z2 centralizes its customers’ material composition data, substance-level tracking, and BOM-level risk intelligence in a single platform. Using this centralized platform, Z2 allows companies to move through IMDS submissions—and other overlapping due diligence obligations—faster and more efficiently.
If your IMDS process still depends on manual outreach, lookups, and/or a single professional’s institutional knowledge of your products and BOMs, it's worth seeing what a centralized approach looks like. To learn more about Z2 and how it can help auto manufacturers streamline their IMDS submissions, schedule a free trial with one of our product experts.
