Mercedes-Benz 400 VIN Decoder: Free Lookup

Want to decode your Mercedes-Benz 400 VIN? You’re in the right place, and it’s completely free. Just type the 17-character vehicle identification number from your 400 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 400

The 400 designation has been used across multiple V8 and biturbo V6 models in the S-Class, E-Class and GLE. It was produced from 1991 to present, and you’ll find it as a Sedan, Coupe, SUV (W140, W210, W212, W213, W205, W167). Assembly happened at: Multiple, Sindelfingen, Bremen, Tuscaloosa.

On pre-1981 400 models the VIN is shorter than 17 characters. That's because the unified VIN standard wasn't introduced until 1981. Vehicles built from 1981 onwards use the standardized 17-character format you're used to seeing today.

A few things worth knowing about the 400

The 400E (W124, 1991 to 1995) was a sleeper sedan with the 4.2L V8 from the 500E packaged in standard W124 bodywork, a quieter, more discreet alternative to the Porsche-built 500E. It produced 268 hp and could reach 60 mph in 7.2 seconds.

How to decode a Mercedes-Benz 400 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 400.

Positions 1 to 3: World Manufacturer Identifier (WMI)

WDB historically; WDD and W1K appear on modern 400-badged cars.

Positions 4 to 8: Vehicle Descriptor Section (VDS)

Chassis codes vary (W140, W210, W212, W213, W205, W167) 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 400 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 varies by model and assembly.

Positions 12 to 17: Production Sequence Number

The final six digits are the unique serial number stamped on your specific 400 as it rolled off the assembly line.

Mercedes-Benz 400 engine codes

Over the years the 400 has been offered with the following engine families: M119 V8, M113 V8, M278 V8, M276 V6 biturbo, M256 inline-six. 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 400? Decode the VIN above. VDS positions 4 to 8 will give you the exact engine variant.

400 VIN quick reference

Here’s the at-a-glance reference for decoding any Mercedes-Benz 400 VIN:

• Production years: 1991 to present
• Body styles: Sedan, Coupe, SUV (W140, W210, W212, W213, W205, W167)
• Primary assembly: Multiple, Sindelfingen, Bremen, Tuscaloosa
• WMI prefix: WDB historically; WDD and W1K appear on modern 400-badged cars.
• Chassis identifier (VDS): Chassis codes vary (W140, W210, W212, W213, W205, W167) encoded in VDS positions 4 to 8.
• Plant code (position 11): Position 11 varies by model and assembly.
• Engine families: M119 V8, M113 V8, M278 V8, M276 V6 biturbo, M256 inline-six
• Trim levels offered: 400SE, 400SEL, 400E, 400CDI, E400, S400, CLS400, GLE400

Mercedes-Benz 400 trim levels and variants

Across its run the 400 has shown up in these trim levels: 400SE, 400SEL, 400E, 400CDI, E400, S400, CLS400, GLE400. 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 400

Open and historic recalls on the 400 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 400 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 400?

You’ll get a free instant decode of any Mercedes-Benz 400 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 400 VIN?

Type the 17-character VIN from your 400’s windshield, driver-side door jamb, or vehicle title into the VinDecoderPlus tool above. Because the 400 was produced from 1991 to present as a sedan, coupe, suv (w140, w210, w212, w213, w205, w167), the decoder returns model-year-appropriate data, including the engine variant from the M119 V8 family. The information comes straight from NHTSA’s vPIC database and Mercedes-Benz build records.

Where is the VIN located on a Mercedes-Benz 400?

On a 400 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 sedan bodies). And fourth, printed on the vehicle title, registration and insurance card. On the 400, the door-jamb sticker is also where you’ll see the original tire and load specification.

What engines were offered in the Mercedes-Benz 400?

The Mercedes-Benz 400 has been offered with these engine families: M119 V8, M113 V8, M278 V8, M276 V6 biturbo, M256 inline-six. The specific engine installed in your particular 400 is encoded in VDS positions 4 to 8 of the VIN. You can confirm the exact displacement, output and aspiration once you decode the VIN above.

Where was the Mercedes-Benz 400 built?

The 400 is mainly assembled at: Multiple, Sindelfingen, Bremen, Tuscaloosa. Position 11 varies by model and assembly. Why does it matter where your car was built? Parts compatibility. European-spec and North-American-spec 400 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 400?

Once you’ve decoded your 400 VIN above, copy the 17 characters into the NHTSA recall database (USA), the EU RAPEX system, or the Mercedes-Benz owner portal. Since the 400 was produced from 1991 to present, 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 400?

Across its run, the 400 has been offered in: 400SE, 400SEL, 400E, 400CDI, E400, S400, CLS400, GLE400. Each trim leaves its fingerprint inside the VIN’s VDS section. The 400E (W124, 1991 to 1995) was a sleeper sedan with the 4.

Is the Mercedes-Benz 400 VIN decoder really free?

Yes. VinDecoderPlus is a completely free decoder for every Mercedes-Benz 400 VIN. No sign-up, no credit card, no usage limit. If you want the deeper stuff (ownership records, accident history, title brand) for the 400, full vehicle history reports are available as an optional paid upgrade from the results page.

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Ready to decode? Type your 17-character Mercedes-Benz 400 VIN into the decoder above and get your results instantly. Or head to our free VIN decoder homepage to decode any other vehicle.