Mi padre revisa la rueda del coche antes de salir.

In Spanish, possessive adjectives like mi, tu, su, nuestro normally go without an article.

So you say:

• mi padre
• tu coche
• su casa

Not:

• el mi padre
• el tu coche

English and Spanish work differently here. English uses my father, and Spanish does the same pattern: mi padre.

Revisa is the present indicative, third person singular, from revisar.

The subject is mi padre, so the verb must be in the he/she form:

• yo reviso
• tú revisas
• él/ella revisa

Here it means something like:

• My father checks...
• My father is checking...

In Spanish, the present tense can describe:

• a habitual action
• a general fact
• something happening now, depending on context

Because revisar means to check, to inspect, or to look over carefully.

By contrast, mirar usually just means to look at.

So:

• revisar la rueda = check the wheel/tire
• mirar la rueda = look at the wheel/tire

If the idea is that the father is making sure everything is okay before leaving, revisar is the better verb.

Literally, rueda means wheel. But in everyday use, it can sometimes refer to the wheel/tire area more generally.

In car-related contexts:

• rueda = wheel, and often loosely the tire/wheel
• neumático = tire
• llanta can also be heard, but usage varies by region

In Spain, rueda is very natural in a sentence like this. A learner should understand that it may not always match English wheel and tire perfectly word-for-word.

Because de + el contracts to del in Spanish.

So:

• de el coche → del coche

This contraction is mandatory.

A similar one is:

• a + el → al

For example:

• Voy al coche
• La rueda del coche

Coche is the normal word for car in Spain.

A native English speaker learning Spanish from Spain should get used to:

• coche = car

In many parts of Latin America, people often say:

• carro
• auto

So coche is especially appropriate for Spain Spanish.

Because la rueda del coche refers to a specific wheel: the wheel of the car.

Spanish often uses the definite article when the thing is identifiable from context.

Here we have:

• a specific father
• a specific car
• a specific wheel of that car

So la rueda del coche sounds natural.

If you said una rueda del coche, it would sound less natural in this context unless you were emphasizing one of the wheels.

Grammatically, the sentence says one wheel.

That may mean:

• he checks one wheel in particular
• the sentence is just giving a simple example
• Spanish is focusing on a single part of the car

If you wanted to say the wheels, you would say:

• Mi padre revisa las ruedas del coche antes de salir.

So yes, if the real-life meaning is he checks the tires/wheels, the plural might be more natural. But the singular sentence is still completely correct.

Because after antes, Spanish normally uses de before an infinitive.

So the pattern is:

• antes de + infinitive

Examples:

• antes de comer
• antes de dormir
• antes de salir

So antes de salir means before leaving.

Because after a preposition such as de, Spanish uses the infinitive.

That is why you get:

• antes de salir
• después de comer
• sin hablar

Not:

• antes de sale
• antes de salgo

So salir stays in its basic dictionary form.

Normally, the understood subject is the same as the main subject: mi padre.

So the most natural reading is:

• My father checks the wheel of the car before he leaves.

Spanish often leaves this unstated when the subject is clear from context.

If the subject were different, Spanish would usually make that clearer, often with a different structure, for example:

• Mi padre revisa la rueda del coche antes de que salgamos.
  • My father checks the wheel of the car before we leave.

Yes. Salir can mean:

• to leave
• to go out
• to head out

The exact translation depends on context.

In this sentence, likely meanings are:

• before leaving
• before setting off
• before going out

If the context is driving somewhere, before setting off may sound especially natural in English.

The sentence is natural as written, but Spanish word order is fairly flexible.

You could also say:

• Antes de salir, mi padre revisa la rueda del coche.

That puts more emphasis on the time expression before leaving.

Both versions are correct. The original order is just a neutral, everyday way to say it.

Yes — it contains several very common Spanish patterns:

• possessive + noun: mi padre
• present tense: revisa
• definite article: la rueda, el coche
• contraction: del
• time expression + infinitive: antes de salir

So even though the sentence is short, it is a very useful model for everyday Spanish.