Heavi AI

Heavy Duty VIN Decoder

Decode any 17-character Vehicle Identification Number using multiple data sources.

Try an example

3AKJHHDR7MSMZ74561XPXDP9X3GD3320741NKZLK0X6RJ3435373HSDJAPR2HN6937711M1AN07Y5GM0233263FRXF75384V650168
Anatomy of a VIN
Every VIN is a 17-character code divided into sections that identify the manufacturer, vehicle attributes, and production sequence.
1XP
WMI
WD40X
VDS
1
CD
E
Year
D
Plant
215307
Serial
1–3
World Manufacturer Identifier
Identifies the country of origin and the vehicle manufacturer. Assigned by SAE International.
4–8
Vehicle Descriptor Section
Describes vehicle attributes including GVWR rating, body style, engine type, and brake system.
9
Check Digit
A calculated value (0–9 or X) based on the other 16 characters, used to detect invalid or miskeyed VINs.
10
Model Year
A single character encoding the model year in a 30-year cycle. Letters I, O, Q, U, Z and digit 0 are excluded.
11
Assembly Plant
Identifies the manufacturing plant where the vehicle was assembled.
12–17
Production Sequence
The manufacturer’s unique sequential production number for this vehicle.
Model Year Codes
Position 10 encodes the model year using a 30-character cycle. Letters I, O, Q, U, Z and digit 0 are excluded to avoid confusion.
A2010
B2011
C2012
D2013
E2014
F2015
G2016
H2017
J2018
K2019
L2020
M2021
N2022
P2023
R2024
S2025
T2026
V2027
W2028
X2029
Y2030
12031
22032
32033
42034
52035
62036
72037
82038
92039
WMI Country Codes
The first character of the VIN identifies the country of manufacture.
1, 4, 5United States
2Canada
3Mexico
JJapan
KSouth Korea
SUnited Kingdom
WGermany
YSweden
ZItaly
GVWR Classes
Gross Vehicle Weight Rating classes categorize vehicles by maximum loaded weight.
10–6,000 lbs
26,001–10,000 lbs
310,001–14,000 lbs
414,001–16,000 lbs
516,001–19,500 lbs
619,501–26,000 lbs
726,001–33,000 lbs
833,001+ lbs
What is a VIN?

A Vehicle Identification Number (VIN) is a unique 17-character alphanumeric code assigned to every motor vehicle manufactured since 1981, when the National Highway Traffic Safety Administration (NHTSA) standardized the format under 49 CFR Part 565. Before 1981, manufacturers used varying formats with no consistency across the industry.

The 17-character VIN uses digits 0–9 and letters A–Z, excluding I, O, and Q to prevent confusion with the numerals 1, 0, and 9. The ninth position is a mathematically calculated check digit that helps detect transcription errors — making it possible to verify whether a VIN has been correctly recorded.

For commercial motor vehicles (trucks, buses, and trailers), the VIN encodes critical information including the Gross Vehicle Weight Rating (GVWR) class, body type, brake system, and engine configuration. This data is used by state and federal agencies for crash reporting, registration, and safety compliance through systems like SAFETYNET and MCMIS.