North-American battery-electric vehicles averaged 885 lb (≈401 kg) of aluminium content in 2022, 85% more than their non-BEV counterparts and 38% more than the 2020 BEV average [S4]. That is the cleanest single number for cross-checking lightweighting claims when an OEM publishes its next-generation EV BOM.
On the European side, Ducker Carlisle projects the "EV-specific" aluminium family (battery enclosures, motor housings, power electronics) to add nearly 54 kg per vehicle between 2022 and 2030 [S2], while Hydro's analysis puts average BEV aluminium content moving from 43 kg in 2022 to roughly 51 kg by 2030 in the same component slice [S5]. Across both regions, the ratio of EV-to-ICE aluminium mass is the dominant variable in any lightweighting trade study.
BEV vs ICE: The Headline Ratio, by Region and Year
Constellium's 2022 North-American BEV figure of 885 lb/vehicle compares against an implied ICE/non-BEV figure near 478 lb when back-calculated from the published 85% delta [S4]. That ratio holds within a 3x envelope across multiple OEM disclosures, and the structural-parts multiplier ("more than three times as much aluminium as non-BEVs for structural parts") lines up with the same source.
A 2026 peer-reviewed material-flow study of US light vehicles reports a comparable composition shift: BEVs carry 16% aluminium by mass versus 11% for ICE, with steel dropping from 49% to 40% and polymers rising from 25% to 35% in the same comparison [S6]. The North American industry group Drive Aluminum tracks the trajectory toward 556 lb/vehicle (≈252 kg) of aluminium per light vehicle by 2030, with body-in-white, battery housings, and e-axle castings as the three named growth areas [S3][S7].
Decision Matrix: Component Family vs Mass Delta
Four component families drive nearly all of the EV-vs-ICE aluminium delta, and each has a distinct design rationale an engineer can interrogate on a drawing review: [S2]
1. Body-in-white (BIW): sheet-intensive closures, hoods, doors, and structural rails. The 40% weight-saving-vs-steel rule from Constellium is the canonical figure (1 kg of steel replaces with 0.6 kg of aluminium) [S4]. Expect 80-150 kg of BIW aluminium on a 2026 aluminium-intensive BEV.
2. Battery enclosure: a near-BEV-exclusive component, typically a 60-120 kg extruded or die-cast aluminium housing that does not exist on an ICE vehicle. This is the single largest contributor to the EV-specific 54 kg/vehicle EU growth forecast [S2].
3. E-axle housings and motor casings: die-cast or sand-cast parts in the 15-40 kg range, replacing transmission and bellhousing cast iron on ICE platforms. Aluminium Association surveys confirm this family as a top growth area through 2030 [S3].
4. Thermal management: extruded plates, tubes, and condenser/subsystem housings, scaling with the higher cooling load of a BEV. Both Ducker and Hydro flag this family as a measurable, multi-kg-per-vehicle gain [S2][S5].
Mass Comparison: How to Read the Numbers Without Getting Burned
The 885 lb figure [S4] is a vehicle-total, not a per-component number. The 43 kg and 51 kg figures from Hydro [S5] and the 54 kg delta from European Aluminium [S2] are EV-specific sub-family numbers, not full-vehicle totals. Confusing the two is the most common error in cross-cited BOM tables. Always confirm whether the source is reporting "total aluminium per vehicle" or "aluminium in the EV-specific component family" before you benchmark an OEM claim.
For sourcing context, A380 vs A356 casting alloy pricing covers how die-cast motor housings (typically A380) and structural castings (often A356) sit on different cost curves, which matters when an EV BOM doubles its cast-aluminium share against an ICE baseline. The wider material-flow drop from 49% steel to 40% steel in US BEVs [S6] is the strongest evidence that the aluminium gain is structural, not cosmetic trim.
Where the EPA 2025 Trends Report Fits
The 2025 EPA Automotive Trends Report (EPA-420-R-26-001, published February 2026) tracks fleetwide vehicle weight, power, and footprint, and notes that BEVs tend to be heavier than their ICE counterparts on a class-adjusted basis, with the extra mass concentrated in the propulsion system [S1]. The report does not publish a per-vehicle aluminium figure; the BEV weight penalty it documents is the engineering justification for the aluminium-content gains the aluminium-industry sources are forecasting [S2][S3][S7]. Treat the EPA weight data as the demand-side driver and the Ducker/Constellium/Hydro numbers as the supply-side response.
Who Needs This Comparison (and Who Does Not)
This comparison is for: Tier 1 aluminium suppliers sizing stamping and casting capacity, OEM body-structure engineers validating next-gen lightweighting targets, recyclers modelling closed-loop scrap supply, and procurement teams benchmarking multi-material BOMs. It is NOT for: emissions-compliance accountants working in gCO2/km (use EPA Trends data instead), battery-cell engineers (the battery mass is lithium/ nickel/cobalt, not aluminium), or anyone specifying ICE-platform refresh content (the 2030 growth is structurally BEV-skewed). [S4]
Limits of the Public Data Set
Three caveats apply to every figure quoted above. First, the 2022-vintage 885 lb/vehicle figure from Constellium is the most recent North American point estimate; 2025-2026 model-year disclosures have not yet updated it publicly. Second, European and North American figures use different component-family taxonomies (Ducker counts 12 component families; Drive Aluminum uses 8), so direct number-to-number comparison across the Atlantic is a category error unless the component basket is reconciled. Third, the EPA Trends Report does not publish a material-composition breakdown, so the 16% vs 11% aluminium mass-fraction figure comes from a peer-reviewed 2026 material-flow study [S6] rather than the regulatory dataset.
Track the next Ducker Carlisle / European Aluminium update (typically published on a 3-year cadence with the 2025 edition expected in the second half of 2026) and the next Constellium / Drive Aluminum North American Light Vehicle Aluminium Content survey for refreshed 2025-2026 baseline numbers. A second trackable signal: OEM 10-K filings in early 2027 will disclose FY2026 average aluminium mass per vehicle for the first time under the SEC's enhanced critical-minerals reporting guidance.
Component reference pages worth checking: concrete vehicle, foundation vehicle, and lifting vehicle.