# Vehicle Guide — OEM Systems Knowledge
Merges (``) with the product/technical documentation from –005. Covers 49 vehicle trims across 4 brands (Ford, Mercedes-Benz, Toyota, VinFast — BMW has zero data anywhere in this project, see ``). No compatibility or specification is invented; every field traces to `Vehicle_Master_Data_v1.xlsx` or `Vehicle_Audio_Architecture_v1.xlsx`.
## OEM system types found in this project
- **MOST (digital fibre-optic bus):** confirmed present for 2/49 trims — all Mercedes-Benz C-Class trims with an Audio Architecture record (real, sourced from AUDIO-MB-C300-AMG / AUDIO-MB-C200-AVANTGARDE-PLUS rows).
- **A2B (Automotive Audio Bus):** PENDING VERIFICATION for all 49 trims — no vehicle in this project has a confirmed A2B value.
- **Analog / Hi-Level:** applicable in principle to non-MOST vehicles per the Mercedes row's own note ('Hi-Level: Không áp dụng — hệ thống dùng tín hiệu số qua MOST'), but no non-MOST vehicle in this project has its Hi-Level status confirmed either — {PENDING} across the board.
- **OEM DSP:** confirmed present (Burmester digital amplifier, described as including onboard DSP) for the 2 richest Mercedes-Benz C-Class trims only. PENDING for the other 47 trims.
- **OEM Amplifier:** Burmester (Mercedes-Benz C300 AMG / C200 Avantgarde Plus, 590W per source) is the only confirmed OEM amplifier brand+spec in this project. PENDING for all other trims.
## Speaker architecture (where known)
- **VinFast VF3 Eco:** 1 cặp loa đồng trục (coaxial 2-way) — vị trí lắp đặt chính xác chưa xác nhận (nhiều khả năng ở cửa trước nhưng không có nguồn xác nhận trực tiếp) [source: Vehicle_Audio_Architecture_v1.xlsx]
- **VinFast VF3 Plus:** 1 cặp loa đồng trục (coaxial 2-way) — vị trí lắp đặt chính xác chưa xác nhận [source: Vehicle_Audio_Architecture_v1.xlsx]
- **VinFast VF8 Eco:** 4 loa mid-bass (cửa) + 2 loa treble (taplo) + 2 loa treble (tapi cửa sau) + 2 loa sub + 1 loa trung tâm (theo nguồn — tổng liệt kê 11, nguồn tuyên bố tổng 13, CHƯA khớp) [source: Vehicle_Audio_Architecture_v1.xlsx]
- **VinFast VF8 Plus:** 4 loa mid-bass (cửa) + 2 loa treble (taplo) + 2 loa treble (tapi cửa sau) + 2 loa sub + 1 loa trung tâm (theo nguồn — không khớp tổng 13 nguồn tuyên bố) [source: Vehicle_Audio_Architecture_v1.xlsx]
- **Mercedes-Benz C-Class C200 Avantgarde Plus:** 4 loa Midrange (cửa trước/sau) + 4 loa Treble (hông cửa/góc taplo) + 1 loa Center (taplo) + 2 loa Surround + 2 loa Bass Woofer (ghế/cốp) + 1 Amplifier Burmester (cốp sau) = 13 loa (theo nguồn thứ cấp) [source: Vehicle_Audio_Architecture_v1.xlsx]
- **Mercedes-Benz C-Class C300 AMG:** 4 Midrange + 4 Treble + 1 Center + 2 Surround + 2 Bass Woofer + 1 Amplifier Burmester = 13 loa (theo nguồn thứ cấp) [source: Vehicle_Audio_Architecture_v1.xlsx]
## Installation considerations (real, sourced only)
The only vehicle-specific installation consideration with real sourced detail in this entire project is the **Mercedes-Benz W206 platform note** (applies to all current-generation C-Class trims, not just Burmester-equipped ones): the MBUX head unit is a single-piece assembly soldered to the main board and cannot be removed/replaced by traditional aftermarket methods — the only viable aftermarket paths are a wireless CarPlay dongle or an OEM software upgrade. This materially affects Installation Difficulty for every C-Class trim, independent of whether it has the Burmester system.
For all other 46 trims: PENDING VERIFICATION — no installation-specific OEM-system consideration is documented.
## Full per-brand / per-trim data
See `` (all 49 trims) and `` for the complete field-by-field breakdown — not re-duplicated here.