La persona titular del vehículo puede responder.

In this sentence, titular means something like the holder, the registered holder, or the person officially listed as responsible for something.

With vehículo, it often refers to the person whose name is on the vehicle’s registration or official documents. In English, that may be closer to the registered keeper or the registered owner than just owner.

It is a very common word in formal and administrative Spanish.

Because in Spanish, adjectives usually come after the noun.

• persona = person
• titular = holder / registered

So la persona titular literally follows the normal Spanish pattern: the person holder → the registered person / the person in whose name it is registered.

Also, in legal or administrative language, persona titular is a fixed, very common expression.

Because persona is a grammatically feminine noun in Spanish, no matter whether the actual person is male or female.

So you say:

• la persona
• la persona titular
• esa persona

even if you are talking about a man.

This is grammar, not biological gender.

Del is the contraction of de + el.

• de = of
• el vehículo = the vehicle

So:

• de el vehículo → del vehículo

This contraction is mandatory in normal Spanish.

Because vehículo is a masculine singular noun, so its definite article is el.

• el vehículo = the vehicle

When that article comes after de, it contracts:

• de el vehículo → del vehículo

So del vehículo means of the vehicle.

Grammatically, puede responder means can respond/answer or may respond/answer.

• puede = can / may / is able to
• responder = to respond / to answer

In official or legal contexts, the exact nuance depends on the situation:

• sometimes it means is allowed to reply
• sometimes is able to reply
• sometimes is the person who should reply
• in some contexts, responder can even suggest being responsible or being liable

So the basic grammar is simple, but the exact meaning comes from context.

Because it comes after the conjugated verb puede.

This is a very common Spanish pattern:

• puede responder = can respond
• quiere hablar = wants to speak
• debe pagar = must pay

So the structure is:

conjugated modal verb + infinitive

Here:

• puede = conjugated
• responder = infinitive

Yes. Puede is the third-person singular present tense of poder.

It can mean:

• he/she can
• it can
• you can in the formal singular (usted)

In this sentence, it matches la persona titular, which is singular:

• La persona titular del vehículo puede responder.

If it were plural, you would say:

• Las personas titulares del vehículo pueden responder.

Because vehículo is more formal and more general.

• coche = car
• vehículo = vehicle

Official, legal, and administrative Spanish often prefers broader words like vehículo, because the sentence may apply not only to cars, but also to motorbikes, vans, etc.

So this wording sounds bureaucratic and official, which is probably the point.

Sometimes yes, but not always perfectly.

Titular often means the person officially registered or officially named in documents. That may be the owner, but in some situations the legal owner and the registered holder are not exactly the same person.

So owner may be acceptable in some translations, but registered holder or registered keeper is often more precise in this kind of sentence.

It is grammatical and natural, but it sounds formal, administrative, or legal, not casual.

In everyday speech, people might say something more like:

• El dueño del coche puede responder.
• La persona que tiene el coche a su nombre puede responder.

But in forms, notices, legal texts, and official websites, la persona titular del vehículo is very typical.

Yes. That is a useful thing to know.

In Spanish, responder can mean:

1. to answer / reply
2. in some contexts, to answer for something, meaning to be responsible or liable

So depending on context, puede responder could mean:

• can reply
• may respond
• possibly can be held responsible or can answer for it

You should use the wider context to decide which meaning is intended.