How do I decode a Chinese EV VIN and verify the build spec?
VIN decoding sounds bureaucratic, but it is the single most useful step before buying a used Chinese EV or sourcing parts. The VIN tells you the assembly plant, model variant, battery pack family, motor configuration and build year. Generic Western VIN decoders return almost nothing useful on Chinese VINs.
VIN structure recap
Positions 1–3 = WMI (World Manufacturer Identifier). The leading L denotes China.
Positions 4–8 = VDS (Vehicle Descriptor Section) — encodes model, body, restraint, battery, motor.
Position 9 = Check digit (calculated).
Position 10 = Model year (S=2025, T=2026, V=2027 …).
Position 11 = Assembly plant.
Positions 12–17 = Serial.
Common Chinese WMIs you will encounter
The leading L indicates a vehicle built in China. Common brand codes:
- LGX — BYD Auto (Shenzhen / Xi'an).
- LB4 — Geely / Zeekr.
- LFV — FAW-Volkswagen (some shared EV platforms).
- LJD — Chery / Omoda / Jaecoo.
- LSV — SAIC-Volkswagen.
- LDP — NIO (JAC contract manufacturing earlier, NIO own plant since 2023).
- LVH — Xpeng (Zhaoqing).
- LJM — Xiaomi Auto (Beijing).
What the VDS positions actually encode
BYD example: positions 4–5 = vehicle line (e.g. 'AT' = Atto family), position 6 = body and restraint, position 7 = battery pack family (B = 60 kWh Blade, C = 82 kWh Blade), position 8 = drive (S = single motor RWD, D = dual motor AWD).
NIO example: position 4 = model, positions 5–6 = trim/battery generation, positions 7–8 = factory option pack.
Each OEM publishes a VDS spec under TRIAS (China's type-approval system). Our VIN Decoder maintains the current mapping for the top 18 brands.
Verifying the build spec against the VIN
Once you decode the VIN, cross-check the result against the build sticker (usually inside the driver's door jamb or under the bonnet on a metal plate) and against the OEM's online VIN-history portal (BYD, NIO, Zeekr, Xpeng and Li Auto all expose one).
Discrepancies — particularly around battery family and drive — are the strongest indicator of a re-numbered or salvaged vehicle.
- 01Chinese VINs are ISO 3779 compliant but VDS schemas are brand-specific.
- 02WMI tells you brand and plant; VDS tells you battery, motor and trim.
- 03Always cross-check the decoded VIN against the build sticker and OEM portal.
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