Layout of identification numbers and information plates
1 — Powertrain number (G270 CDI)
2 — Powertrain number (G320, G500, G55 AMG, G400 CDI)
3 - Nameplate
4 — Chassis number
5 — Vehicle Identification Number (VIN)
6 — Label with information on fuel grades
7 - Label with tire inflation pressure table
VIN
The vehicle identification number (VIN) plate (5) is fixed to the frame in the right front wheel arch, and the number is also duplicated on the factory plate. The VIN interpretation is given below.
European models

1 and 19 — Icons with the image of the Mercedes-Benz trademark (star) - indicate the beginning and end of the VIN (presence is optional)
2—4 — International code of the manufacturer
5—10 — Model serial number (463.322/323: G270 CDI, 463.332/333: G400 CDI, 463.250: G320, 463.249: G500, 463.246: G55 AMG)
11 — Steering type (1= left-hand)
12 — Manufacturer's code (A-E: Sindelfingen, F-H: Bremen, J: Rastatt, T: Karmann (Osnabrueck), X: Graz)
13—18 — Current serial number
American models

1—3 — International code of the manufacturer
4—7 — Model serial number
8 — Additional security systems
9 — Control digit
10 — Year code (Y = 2000)
11 — Manufacturer's code (A-E: Sindelfingen, F-H: Bremen, J: Rastatt, T: Karmann (Osnabrueck), X: Graz)
12—17 — Current serial number
Nameplate
The manufacturer's plate (3) is attached to the rear pillar of the right front door opening. The plate indicates the VIN of the vehicle, as well as the permissible weight loads - more detailed information is available from Mercedes-Benz representative offices.
Powertrain number
On the G320, G500, G55 AMG, G400 CDI models, the powertrain number (2) is located on the rear of the engine cylinder block on the right in the direction of travel; on the G270 CDI models, the number (1) is stamped on the side of the cylinder block on the left in the direction of travel.
[Article was borrowed from the website: mercedesman]
Chassis number

The chassis number plate (4) is placed on the upper edge of the rear bulkhead of the engine compartment, on the right in the direction of travel.
The following information is encrypted in the number:
- 1 — International code of the manufacturer
- 2 — Model code
- Y — 463
- Z — 461
- 3 — Engine type
- R - Gasoline
- D - Diesel
- 4 — The last two digits of the model serial number (463.249)
- 5 — Maximum permissible vehicle weight
- E — 2723÷3175 kg
- F — 3176÷3629 kg
- G — 3630÷4083 kg
- H — 4084÷4537 kg
- 6 — Control digit
- 7 — Year of manufacture code
- 1 — 2001
- 2 — 2002
- 3 — 2003
- 4 — 2004
- 8 — Manufacturer's code
- X — SFT, Graz — Austria
- 9 — Current chassis serial number
