Original procedural model and interactive implementation: Copyright Santeri Hukari.
No open redistribution licence has been selected for the original model.

Frozen source: vw_t4_powertrain_update_2026-10-17_r8_live1.
Engine revision 7: 271 components. Viewer revision live1.
Reference-pose downloads are not current-state exports or replacement parts.
Estimated educational geometry; no physical fit, safe-operation, acoustic
prediction or fault-diagnosis validation. Flow is illustrative, not CFD.
Audio is original synthesis, not a measured engine recording. Turbo load and
spool response use arbitrary illustration settings, not pressure or turbo maps.

Three.js 0.180.0, MIT: /assets/cad/coffee-filter/three/LICENSE
Source: https://github.com/mrdoob/three.js/tree/r180
Lucide Static 0.468.0, ISC: /assets/cad/t4-engine/LUCIDE-LICENSE
Source: https://github.com/lucide-icons/lucide/tree/0.468.0
Dependency licences do not grant rights to the original CAD.
External source links support only the limited scope described in sources.json.
No external vendor CAD, manual artwork or engine recordings are redistributed.