ELV (GADSL) Compliance Software

GADSL - the Global Automotive Declarable Substance List - is technically a voluntary industry standard, not a regulation. It was developed by the Global Automotive Stakeholder Group (GASG), a cross-industry body including OEMs, tier suppliers, and chemical companies. The list currently covers over 3,000 substances and is updated annually, typically published in February with a 12-month adoption window. Here’s why "voluntary" is misleading in practice: virtually every major automotive OEM - Toyota, Volkswagen, BMW, GM, Stellantis, Ford, and others - has incorporated GADSL into their contractual supplier requirements. If you’re a Tier 1, 2, or 3 supplier, your customer’s material specification or PPAP package almost certainly references GADSL compliance. So while there’s no government agency enforcing GADSL directly, your commercial relationship with the OEM functions as the enforcement mechanism. Miss a GADSL declaration, and you risk part rejections, production holds, or loss of program status.

IMDS (International Material Data System) is the global platform where automotive suppliers report the full material composition of every part going into a vehicle. It was originally created to support compliance with the EU End-of-Life Vehicle (ELV) Directive - ensuring vehicles meet recyclability and hazardous substance targets - and is now used by over 50 OEMs and 120,000+ suppliers worldwide. CAMDS (China Automotive Material Data System) is the Chinese equivalent, developed by CATARC (China Automotive Technology and Research Center). It serves a similar function - collecting substance-level material data - but is specifically required for vehicles seeking type approval in the Chinese market. Whether you need both depends on where your parts end up. If you supply components for vehicles sold in the EU, North America, Japan, or Korea, IMDS is the de facto requirement.

This is one of the most operationally critical concepts in automotive substance compliance, and one of the most commonly miscalculated. A homogeneous material is a material that cannot be mechanically disjointed into different materials - think of a single layer of paint, a type of rubber, a solder alloy, or one specific polymer compound. It’s the level at which GADSL thresholds are measured. When GADSL says a substance has a reporting threshold of 0.1% by weight, that 0.1% is measured against the homogeneous material, not against the weight of the entire part or assembly. This distinction matters enormously. A tiny O-ring containing 2% of a declarable substance would trigger a declaration, even though that O-ring represents a negligible fraction of a multi-kilogram assembly. Conversely, a trace amount of the same substance distributed evenly across a large plastic housing might fall well below the threshold at the homogeneous-material level

GADSL is updated annually by the GASG Steering Committee, with the new version typically published in February. Once published, the industry has at most 12 months to adopt the updated list - meaning all declarations should reflect the current version within that window. In exceptional cases (such as urgent regulatory changes), off-cycle updates can happen, though this is rare. When a substance is added or reclassified - say, moved from "D" (declarable) to "P" (prohibited) - the impact ripples through the entire supply chain. Every supplier whose parts contain that substance at or above the threshold needs to re-evaluate: can they continue using it, do they need to reformulate or find an alternative material, and does the change trigger an updated IMDS submission? The challenge for most companies isn’t awareness that GADSL has changed. It’s operationalizing the change across hundreds or thousands of active part numbers.

This is a major regulatory shift. In December 2025, the European Parliament and Council reached a provisional agreement on a new Regulation on circularity requirements for vehicle design and management of end-of-life vehicles. This new regulation will replace both the existing ELV Directive (2000/53/EC) and the 3R Type-Approval Directive (2005/64/EC) with a single, directly applicable regulation - meaning no more country-by-country transposition differences across EU Member States. For suppliers focused on substance compliance, the core restrictions on lead, mercury, cadmium, and hexavalent chromium carry forward, and other substance restrictions will continue to be managed under REACH. But the regulation introduces several new dimensions that will affect upstream supply chain operations. The scope expands significantly - beyond just passenger cars and light commercial vehicles to include heavy-duty trucks, motorcycles, and special-purpose vehicles.

This is one of the most common operational pain points for tier suppliers, especially those supplying multiple OEMs. GADSL is designed to be the single, harmonized industry standard - and IMDS explicitly references it as the only list that needs to be checked for reportable substances. But in reality, many OEMs layer additional requirements on top. Some maintain proprietary restricted substance lists that include substances GADSL doesn’t cover, tighter thresholds than GADSL specifies, or application-specific prohibitions that go beyond what the GADSL "D/P" classification captures. The result is that a Tier 1 supplier working across three or four OEM programs may be managing GADSL, plus two or three customer-specific lists, plus underlying REACH and RoHS obligations - all with slightly different substances, different thresholds, and different reporting formats. Running each list as a separate manual exercise is unsustainable at scale.