Mätarställningen och årsmodellen står i varudeklarationen.

Because they are in the definite form:

• mätarställningen = the odometer reading / mileage
• årsmodellen = the model year
• varudeklarationen = the product declaration

In Swedish, the definite article is often attached to the end of the noun instead of being a separate word like the in English.

So:

• mätarställning = odometer reading / mileage
• mätarställningen = the odometer reading

Because Swedish usually puts definiteness on the noun itself.

So instead of saying something like the varudeklaration, Swedish says varudeklarationen.

A separate article like den/det is normally used when there is also an adjective:

• varudeklarationen = the product declaration
• den tydliga varudeklarationen = the clear product declaration

It is a compound noun:

• mätare = meter, gauge, counter
• ställning = position, setting, reading

So mätarställning is the reading on a meter, and in car-related contexts it usually means the odometer reading or mileage shown on the odometer.

This is a very typical Swedish compound: several ideas are packed into one word.

Årsmodellen means the model year.

It is built from:

• år = year
• modell = model

The -s- is a very common linking element in Swedish compounds. It does not always have a separate meaning of its own; it just helps connect the parts of the compound smoothly.

So:

• årsmodell = model year
• årsmodellen = the model year

Yes, literally står means stands, but in Swedish it is also very commonly used to mean:

• is written
• says
• appears in writing

So står i varudeklarationen means something like:

• is stated in the product declaration
• is written in the product declaration

This is very natural Swedish. Compare:

• Det står i tidningen. = It says so in the newspaper.
• Vad står det här? = What does it say here?

Because Swedish verbs do not change form for singular vs. plural subjects in the present tense.

So:

• Mätarställningen står ...
• Årsmodellen står ...
• Mätarställningen och årsmodellen står ...

In all three cases, the verb is still står.

This is different from English, where we distinguish between is and are.

Here i means in and is the natural choice for something written in a document.

So står i varudeklarationen = is written in the product declaration.

Swedish prepositions do not always match English one-to-one, but with documents and written content, i is very common.

It is another compound noun:

• vara = item, product, goods
• deklaration = declaration, statement

So varudeklaration is a product declaration, specification, or information sheet about a product. In contexts like used-car sales, it can mean the document where important facts about the car are listed.

So varudeklarationen here refers to a specific such document.

The structure is:

Subject + verb + prepositional phrase

• Mätarställningen och årsmodellen = subject
• står = verb
• i varudeklarationen = prepositional phrase

So the sentence is very straightforward Swedish word order.

If you changed the sentence to start with the prepositional phrase, Swedish would use inversion:

• I varudeklarationen står mätarställningen och årsmodellen.

That still means the same thing, but the verb must come second.

They would be:

• mätarställning = odometer reading / mileage
• årsmodell = model year
• varudeklaration = product declaration

In the sentence, they are definite because the speaker is referring to specific information and a specific document:

• mätarställningen
• årsmodellen
• varudeklarationen