Understand the motorcycle registration document correctly and recognize hidden clues!

You are standing in front of your dream machine. The paint shines in the sun, the sound of the muffler makes your heart beat faster and the seller assures you: “Well maintained, German model, accident-free.“But before you sign the purchase contract and hand over thousands of euros, there is one hurdle that many laypeople fail at or simply forget: the document check.

The registration certificate parts I and II (formerly vehicle registration document and vehicle registration document) is much more than just a piece of paper for the authorities. It is the biography of the motorcycle. Anyone who can read them can immediately see whether the machine has a “throttled past”, whether it was imported from overseas via dark channels or whether technical changes have been made that could cause a rude awakening at the next MOT appointment.

In this detailed article you will learn how to become a “paper detective”. We decipher codes that otherwise only approval authorities and test engineers understand. Promised.

Chapter 1: The Anatomy of Power – Registration Certificate Parts I & II

Before we get to the secret codes, we need to understand the basics. The EU-wide harmonized documents have existed since October 1, 2005. The goal was standardization, but for the layperson it often became more confusing because a lot of information is now in encrypted fields. Fields that make no sense to mere mortals.

Registration certificate part I (the vehicle registration document)

This is the document that you must have with you (either a copy or original) on every journey. It contains all the technical details that are relevant for the police during a stop.
Important for you: The currently valid performance data and all special entries are in field 22.

Registration certificate part II (the vehicle registration document)

Ideally, this document remains safe at home (or with the financing bank). It is the document that identifies you as the rightful owner.
Important for you: Here you can see the number of previous owners and – crucially – the origin of the vehicle. If the letter was issued as a “replacement letter” just two weeks ago, your alarm bells should be ringing.

How do you recognize a replacement font?

Look at the bottom of the registration certificate Part II in the field (24) “Check digit for vehicle registration number” or in the internal notes from the authority on the back/bottom. It often states clearly: “Issued as a replacement for letter number… due to loss”.

Chapter 2: The “0000” Mystery – Exposing the Gray Import

This is probably the most important point for every used buyer. A “gray import” is a vehicle that was not imported through the official German dealer (such as BMW Motorrad Germany or Honda Germany), but by independent importers from markets such as the USA, Japan or the Emirates.

Searching for the type code number (TSN)

Look at the registration certificate part I, field 2.2. In a regular German model you will find a combination of three letters or numbers (e.g. “AAV”). This number tells the spare parts dealer and the insurance company exactly which model it is.

However, if there are only zeros (0000 0000), it is a vehicle with an individual operating license (EBE) in accordance with Section 21 StVZO.

Why “0000” can (but doesn’t have to) be a problem

Many buyers are lured by a low price without knowing what a zeroed type code means:

1. Insurance classification: Since the system does not automatically recognize the model, you are often manually classified into a (usually more expensive) class.

2. Spare parts chaos: If you want to order brake pads from an online retailer, you won't be able to find the key number. Every time you have to laboriously compare whether the parts of the EU model really fit.

3. Technical differences: A US model of a Yamaha R1 may have different headlights (without E-mark), different emissions controls or even a different software setup than the German counterpart.

4. Resale value: In collector circles or on the classic used market, “real German models” (often known as “5HD” at Harley-Davidson) achieve significantly higher prices. An import is always traded at a discount. You can do this on carfax.eu Check vehicle history of individual motorcycles.

Chapter 3: The Thrush Detectives – Not all performance is the same

Particularly with entry-level motorcycles (category A2), tricks are used as much as possible. There are two scenarios you need to keep in mind:

Scenario A: The “secret” unthrottling

The motorcycle is listed as having 35 kW (48 hp), but it takes off like a rocket. The seller grins: “It’s open, has around 100 hp, but is registered as A2 – saves on insurance!” This is a trap.

• Legally: You are driving without a license. In the event of an accident, insurance coverage expires.

• Criminal law: If you only have the A2 driving license, that is “driving without a license”.

Scenario B: The “neutered” 100 hp machine

There has been an EU regulation since 2016: an A2 motorcycle is allowed a maximum when open 70 kW (95 hp) afford. If you buy an older motorcycle that has 120 HP open and is throttled to 48 HP, you cannot legally drive it with today's A2 driving license in many EU countries, even if the throttle is registered.

This is how you read the performance history in field 22

Field 22 is the free text field at the end of the registration certificate Part I. Every change is documented here. Search for terms like:

• “Power reduction through gas travel limiter, H=24mm”

• “Increasing performance by expanding the throttle plates in the intake tract”

If a performance increase is noted there, look at the date. Was the machine driven at reduced speed for the first 30,000 km? This can have an impact on the wear pattern of the engine (e.g. coking on the valves) if it has never been “blown clear”.

Chapter 4: The Country Code Check – Where does it really come from?

In addition to the type key, there is another hidden feature: the vehicle identification number (VIN), also known as VIN. It is in field E.

The first three digits (world manufacturer code) tell you the country of origin:

• JNT to JYF: Japan (e.g. many Honda, Yamaha, Suzuki)

• ZCG to ZDM: Italy (e.g. Ducati, Moto Guzzi)

• VNT to VNY: France

• 1HD, 5HD: USA (Harley Davidson)

• WB1: Germany (BMW)

The insider trick at Harley-Davidson: A German model almost always begins with 5HD. The number starts with 1HD, it was originally produced for the US market. Many 1HD machines come to Germany via Lithuania or Poland. Often called “salvage titles” (total loss in the US) that were repaired cheaply. A look at the VIN in field E can tell you whether you have an accident bike from the USA in front of you.

Chapter 5: Fields 17 and 18 – The status of the approval

These small fields are often ignored, but are crucial to legality.

• Field 17 (characteristics of the operating permit): * K: The vehicle has EC type approval. This means it complies with European standards and can easily be approved in any EU country.

  • A: National operating license. Mostly for older vehicles or small series.

  • E: Individual operating license. The sign for imports or extreme custom bikes.

• Field 18 (length of vehicle): There are often discrepancies when the rear has been shortened. If the motorcycle looks very short visually, but the information in field 18 still describes the original condition, the conversion was not entered.

Chapter 6: The “diary” in field 22 – What is really written there

Field 22 is every detective's goldmine. All deviations from the series are noted here. Pay attention to the following entries that influence the value:

1. Tire manufacturer binding

In the past it often said: “Observe tire binding in accordance with operating permit”. Danger: Since 2020 there have been new rules for motorcycles whose tires are no longer produced or which want to have a different size. If special tire brands are listed here that no longer exist, you will have to plan for new tires and a TÜV inspection (approx. €100) when buying.

2. Exchange frame

Is there something there? “Exchange frame number…”? This is a massive warning sign. A frame will only be replaced if the old one has been destroyed by an accident or corrosion. So the motorcycle had serious damage. This drastically reduces the value, even if the repair was professional.

3. Special handlebars and accessories

Every change (LSL handlebars, Akrapovic exhaust without E number, footrest system) must be listed here. If it's not there, but the parts are installed, ask for them ABE (general operating permit) in paper form. If this is missing, the bike is due for the next inspection.

Chapter 7: The “missing” previous owners

Part II of the registration certificate states: field (1) the number of previous owners. A popular deception: If a motorcycle has passed through many hands (e.g. 6 previous owners), it looks bad in the letter. Some sellers deregister the motorcycle for a short time and request a new letter (due to “loss” or “damage”). The number will then appear in the new letter from the previous owner 1 (the current holder), but underneath it says small: “Number of previous owners according to the old document: 5”.

Read this small print section under the previous owners field carefully! If it says the letter was reissued due to loss, ask for the old letter (or a copy). If you have nothing to hide, you keep copies of old documents.

Chapter 8: The timeline check – first registration vs. year of manufacture

A motorcycle can be “new” even though it is already three years old.

• Field B: Date of first registration.

• Field (6): Date to K (date on which type approval was granted).

Machines often sit at dealers as “sheltered items” for years. This is technically okay, but rubber ages. Look at those DOT number the tire (four digits, e.g. 1222 = 12th week 2022). If the bike was first registered in 2025 but the tires are from 2021, the machine has been standing there for four years. This may have led to base plates and squashed seals.

Chapter 9: Insider Knowledge – The Psychological Negotiation

If you have found discrepancies in the paperwork (e.g. import “0000” or a hidden throttling), you have the upper hand in the price negotiation.

This is how you do it:

1. Don't complain right away: Let the seller tell you first. If he says “German model” and you see “0000,” you have caught him lying.

2. Quantify costs: "Look, this is a US import. I may need confirmation of the lighting system for the next MOT and finding spare parts is much more difficult. This is worth at least 800 euros less on the market."

3. Using “fear”: "For me, a motorcycle with a replacement frame is an accident vehicle. I can only buy it with a massive discount of 20%."

Expert FAQ: Frequently asked questions about document checks

Q1: Is an imported motorcycle fundamentally worse?

Answer: No. A motorcycle from Japan can even be better maintained (they have the strict “Shaken” MOT). The problem is the documentation and the supply of spare parts in Europe. An import simply has to be cheaper than an official German model.

Q2: What do I do if the seller only shows the registration certificate Part I (vehicle registration document)?

Answer: Insist on Part II (Letter). Only there will you see the number of previous owners and whether the vehicle may have been deposited as security at a bank. Never buy a motorcycle that requires the letter to be “forwarded.”

Q3: Can I have a throttling carried out myself?

Answer: Yes, but you need confirmation from a workshop or you have to demonstrate the mechanical removal to the TÜV inspector. Costs around 50-100 euros plus the fees at the admissions office for new papers.

Q4: How do I know if the mileage in the letter is plausible?

Answer: Compare the mileage on the old MOT reports (which you should always have shown to you) with the entries in the service booklet. If the machine had 15,000 km at the TÜV in 2022 and now still has 15,500 km, it was either not driven at all or the speedometer was manipulated.

Q5: What does the entry “Replacement engine” in field 22 mean?

Answer: This is usually positive! It means the engine has run less than the chassis. But: Have the invoice from the installation shown to you to check whether it was a new engine or a used one from the scrapyard.

Summary: The 5-point checklist for professionals

Before you count the money, go through these five points in your head:

1. Field 2.2: Does it say “0000”? (If yes -> press price, import check).

2. Field E (VIN): Does the number on the frame match the paper exactly? (No scratches on the number?).

3. Field 22: Are there any throttles or modifications that are no longer visible on the bike? (Or vice versa?).

4. Previous owner: Does the number of owners match the condition and the seller's stories?

5. TÜV reports: Do the mileages logically increase over the years?

Conclusion: Your knowledge is your wallet protection

Buying a motorcycle is an emotional affair, but checking the documents must be cold and rational. Anyone who understands the hidden information in the vehicle registration document will protect themselves from illegal hobby shops, expensive import traps and legal problems. An honest motorcycle has an honest paper history. If the seller gets nervous about questions about the documents, that's your signal to put your helmet back on and keep looking.