Mercedes-Benz M-Class VIN Decoder: Free Lookup

Want to decode your Mercedes-Benz M-Class VIN? You’re in the right place, and it’s completely free. Just type the 17-character vehicle identification number from your M-Class into the box above and you’ll get the make, model variant, year, engine family, transmission, trim level, factory options and assembly-plant data in seconds. No sign-up, no email needed.

About the Mercedes-Benz M-Class

The M-Class was Mercedes-Benz's first mainstream SUV, launched in 1997, renamed GLE in 2015. It was produced from 1997 to 2015, and you’ll find it as a Mid-large SUV. Assembly happened at: Tuscaloosa, Alabama, USA.

As an SUV, the M-Class VIN also tells you about drivetrain configuration (including 4MATIC all-wheel drive) and option packages such as the Off-Road Engineering Package.

A few things worth knowing about the M-Class

The M-Class (1997) was Mercedes-Benz's first SUV and was developed jointly with the new Tuscaloosa, Alabama plant, the company's first US production facility. Early W163 M-Class units suffered reliability problems that prompted Mercedes-Benz to dramatically improve quality controls for the W164 generation (2005+).

How to decode a Mercedes-Benz M-Class VIN

Every Mercedes-Benz VIN built since 1981 follows the ISO 3779 standard. That gives you 17 alphanumeric characters split into three blocks: the World Manufacturer Identifier (positions 1 to 3), the Vehicle Descriptor Section (positions 4 to 9) and the Vehicle Identifier Section (positions 10 to 17). Here’s what each chunk tells you about your M-Class.

Positions 1 to 3: World Manufacturer Identifier (WMI)

4JG is the historic North American WMI; WDC for export markets.

Positions 4 to 8: Vehicle Descriptor Section (VDS)

W163, W164 and W166 chassis codes are encoded in VDS positions 4 to 8.

Position 9: Check Digit

The check digit comes from a weighted sum of the other 16 characters. Think of it as a self-validating control. If you mistype any single character on your M-Class VIN, the check digit won’t match and the VIN is flagged as invalid.

Position 10: Model Year

Position 10 tells you the model year using a rolling alphanumeric scheme. A quick Mercedes-Benz cheat sheet: S = 1995, Y = 2000, 5 = 2005, A = 2010, F = 2015, L = 2020, P = 2023, R = 2024, S = 2025, T = 2026.

Position 11: Assembly Plant

Position 11 is 'A' (Tuscaloosa, Alabama, USA).

Positions 12 to 17: Production Sequence Number

The final six digits are the unique serial number stamped on your specific M-Class as it rolled off the assembly line.

Mercedes-Benz M-Class engine codes

Over the years the M-Class has been offered with the following engine families: M112 V6, M113 V8, M272 V6, M273 V8, OM642 V6 diesel, AMG M156/M157 V8. Mercedes-Benz engine codes follow a tight naming convention. The letter ‘M‘ denotes a petrol/gasoline engine (think M256, M177, M139), while ‘OM‘ (Oel-Motor) flags a diesel (OM651, OM654, OM656 and so on). Want to know exactly which engine sits under your M-Class? Decode the VIN above. VDS positions 4 to 8 will give you the exact engine variant.

M-Class VIN quick reference

Here’s the at-a-glance reference for decoding any Mercedes-Benz M-Class VIN:

• Production years: 1997 to 2015
• Body styles: Mid-large SUV
• Primary assembly: Tuscaloosa, Alabama, USA
• WMI prefix: 4JG is the historic North American WMI; WDC for export markets.
• Chassis identifier (VDS): W163, W164 and W166 chassis codes are encoded in VDS positions 4 to 8.
• Plant code (position 11): Position 11 is 'A' (Tuscaloosa, Alabama, USA).
• Engine families: M112 V6, M113 V8, M272 V6, M273 V8, OM642 V6 diesel, AMG M156/M157 V8
• Trim levels offered: ML320, ML350, ML430, ML500, ML550, ML55 AMG, ML63 AMG, ML250 BlueTEC, ML350 BlueTEC

Mercedes-Benz M-Class trim levels and variants

Across its run the M-Class has shown up in these trim levels: ML320, ML350, ML430, ML500, ML550, ML55 AMG, ML63 AMG, ML250 BlueTEC, ML350 BlueTEC. Every trim leaves a fingerprint inside the VIN’s VDS section. Decoding your VIN doesn’t just confirm the trim level. It also surfaces the original factory option packages (AMG Line, Premium, Driver Assistance, Burmester audio, the lot), and that’s the stuff that really matters when you’re checking resale value.

Recall and safety information for the Mercedes-Benz M-Class

Open and historic recalls on the M-Class are tracked by NHTSA in the USA, by the European Commission’s RAPEX system in the EU, and by individual national transport authorities elsewhere. Once you’ve decoded your M-Class VIN above, copy the 17 characters into any of these databases to check for outstanding safety actions. On modern Mercedes-Benz cars the usual suspects are airbag inflators, fuel-system seals, electric power steering and occupant-classification software.

Why use VinDecoderPlus for your M-Class?

You’ll get a free instant decode of any Mercedes-Benz M-Class VIN with VinDecoderPlus. No sign-up, no email, no credit card. The data comes from NHTSA’s vPIC database (the official US government VIN registry) and is cross-referenced with manufacturer specifications. If you want to dig deeper into ownership records, accident reports, title brands or odometer history, you can upgrade to a full vehicle history report directly from the results page.

Frequently asked questions

How do I decode my Mercedes-Benz M-Class VIN?

Type the 17-character VIN from your M-Class’s windshield, driver-side door jamb, or vehicle title into the VinDecoderPlus tool above. Because the M-Class was produced from 1997 to 2015 as a mid-large suv, the decoder returns model-year-appropriate data, including the engine variant from the M112 V6 family. The information comes straight from NHTSA’s vPIC database and Mercedes-Benz build records.

Where is the VIN located on a Mercedes-Benz M-Class?

On a M-Class you’ll find the VIN in four places. First, on the lower-left corner of the windshield, where it’s visible from outside the car. Second, on a sticker inside the driver’s-side door jamb. Third, stamped into the engine firewall or chassis rail (this is typical for mid-large suv bodies). And fourth, printed on the vehicle title, registration and insurance card. On the M-Class, the door-jamb sticker is also where you’ll see the original tire and load specification.

What engines were offered in the Mercedes-Benz M-Class?

The Mercedes-Benz M-Class has been offered with these engine families: M112 V6, M113 V8, M272 V6, M273 V8, OM642 V6 diesel, AMG M156/M157 V8. The specific engine installed in your particular M-Class is encoded in VDS positions 4 to 8 of the VIN. Looking for the AMG-tuned variant? Check VDS positions 6 and 7. Those positions flag AMG-spec models.

Where was the Mercedes-Benz M-Class built?

The M-Class is mainly assembled at: Tuscaloosa, Alabama, USA. Position 11 is ‘A’ (Tuscaloosa, Alabama, USA). Why does it matter where your car was built? Parts compatibility. European-spec and North-American-spec M-Class variants sometimes differ in lighting, emissions equipment and OBD-II reporting standards, even when they share the same chassis code.

How can I check open recalls on my Mercedes-Benz M-Class?

Once you’ve decoded your M-Class VIN above, copy the 17 characters into the NHTSA recall database (USA), the EU RAPEX system, or the Mercedes-Benz owner portal. Since the M-Class was produced from 1997 to 2015, you may also bump into historic technical service bulletins (TSBs). Those aren’t safety recalls, but they do give you useful maintenance guidance for your specific chassis code.

What trim levels are available for the Mercedes-Benz M-Class?

Across its run, the M-Class has been offered in: ML320, ML350, ML430, ML500, ML550, ML55 AMG, ML63 AMG, ML250 BlueTEC, ML350 BlueTEC. Each trim leaves its fingerprint inside the VIN’s VDS section. The M-Class (1997) was Mercedes-Benz’s first SUV and was developed jointly with the new Tuscaloosa, Alabama plant, the company’s first US production facility.

Is the Mercedes-Benz M-Class VIN decoder really free?

Yes. VinDecoderPlus is a completely free decoder for every Mercedes-Benz M-Class VIN. No sign-up, no credit card, no usage limit. If you want the deeper stuff (ownership records, accident history, title brand) for the M-Class, full vehicle history reports are available as an optional paid upgrade from the results page.

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Looking for a different Mercedes-Benz model? Browse our full Mercedes-Benz VIN decoder hub, or jump straight into one of the most popular Mercedes model decoders below:

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Ready to decode? Type your 17-character Mercedes-Benz M-Class VIN into the decoder above and get your results instantly. Or head to our free VIN decoder homepage to decode any other vehicle.