Comparamos el permiso de circulación con la tarjeta de inspección técnica.

Comparamos is the 1st person plural form of comparar: we compare.

A useful thing to know is that for many -ar verbs, the present and the preterite forms for nosotros look the same:

• comparamos = we compare
• comparamos = we compared

So by itself, comparamos is ambiguous. Context tells you which one is meant. In a neutral instructional or descriptive sentence like this, learners will often understand it as we compare.

Also, it is not the same as comparemos, which means let’s compare or can appear in some subjunctive contexts.

Spanish often uses the definite article more naturally than English does, especially with specific, known items.

Here, el permiso de circulación and la tarjeta de inspección técnica refer to specific types of official documents, so the articles sound natural and standard.

In English, you might sometimes leave out the in headings or labels, but in normal Spanish sentences the articles are usually kept:

• el permiso de circulación
• la tarjeta de inspección técnica

Because the usual pattern is:

• comparar algo con algo

So:

• Comparamos el permiso de circulación con la tarjeta...

means We compare the registration certificate with the inspection card.

This is the most standard and natural construction in this kind of sentence. English can say compare X with Y or compare X to Y, but Spanish most commonly uses con here.

Yes, you might hear or see that, but it is slightly less explicit.

Compare these:

• Comparamos X con Y = we compare X with Y
• Comparamos X y Y = we compare X and Y

Both can work, but con makes the relationship clearer. In careful or formal language, especially in instructions or administrative contexts, comparar X con Y is often preferred.

This is a very common Spanish structure:

• noun + de + noun / phrase

It often expresses:

• purpose
• type
• classification
• official name

So:

• permiso de circulación = literally something like circulation permit, but in real use it is the standard name of the document
• tarjeta de inspección técnica = technical inspection card/document

Spanish uses de very naturally where English might use:

• another noun
• an adjective
• a more compact compound noun

Because in this phrase, circulación is part of the fixed name of the document, not a separate specific noun that needs its own article.

So Spanish says:

• permiso de circulación
• tarjeta de inspección técnica

not normally:

• permiso de la circulación
• tarjeta de la inspección técnica

Adding the article would usually change the feel of the phrase and make it sound less like the standard administrative term.

It is not the direct object. It is the object of the preposition con.

The structure is:

• Comparamos = verb
• el permiso de circulación = direct object
• con la tarjeta de inspección técnica = prepositional phrase

So the thing being directly acted on by the verb is el permiso de circulación, and the second document is introduced through con.

Because the personal a is mainly used with human direct objects, and here la tarjeta de inspección técnica is:

1. not a person, and
2. not even a direct object here, because it comes after con

So a would be wrong in this sentence.

It describes inspección.

The internal structure is:

• tarjeta
  
  • de inspección técnica

And inside that smaller phrase:

• inspección = noun
• técnica = adjective modifying inspección

So the meaning is basically card of technical inspection, not technical card.

That is why técnica is feminine singular: it agrees with inspección, which is feminine singular.

No, Spanish word order is flexible, but this is the most neutral and natural order.

The sentence follows a very common pattern:

• verb + direct object + con + second item

So:

• Comparamos el permiso de circulación con la tarjeta de inspección técnica.

sounds clear and standard.

Other orders are possible in special contexts, for example for emphasis, but they are less neutral.

Yes. The written accents show the stressed syllable and are part of the correct spelling.

• circulación → stress on the final -ón
• técnica → stress on téc
• inspección → stress on the final -ón

These accents are important both for pronunciation and spelling. Without them, the words would be misspelled.

Normally, no. In Spanish, common names of documents are usually written in lower case:

• permiso de circulación
• tarjeta de inspección técnica

Spanish uses capitals less than English does for this kind of phrase. You would normally only capitalize them if they appeared at the beginning of a sentence or as part of a specific official title or heading.