Az autó nem felel meg, ezért megbukik a műszaki vizsgán.

The dictionary form is megfelel. In Hungarian, when a verb with a prefix is negated, the prefix usually separates from the verb.

So:

• megfelel = meets / is suitable / complies
• nem felel meg = does not meet / is not suitable / does not comply

Compare:

• Az autó megfelel. = The car passes / meets the requirements.
• Az autó nem felel meg. = The car does not meet the requirements.

This separation is very common with verbal prefixes.

Here megfelel means something like:

• to meet the requirements
• to be up to standard
• to comply
• to be acceptable

So Az autó nem felel meg means the car does not meet the required standard.

It does not literally mean answer even though felel by itself can relate to answering or being responsible for in other contexts. As megfelel, it has a different established meaning.

Yes, Hungarian often leaves that understood from context.

A fuller version could be:

• Az autó nem felel meg a követelményeknek. = The car does not meet the requirements.
• Az autó nem felel meg az előírásoknak. = The car does not comply with the regulations.

Notice that megfelel usually takes a dative complement:

• a követelményeknek
• az előírásoknak

In your sentence, that part is simply omitted because it is obvious: the car does not meet the standards needed for the inspection.

Ezért means therefore, so, or for this reason.

It introduces the result of the first clause:

• Az autó nem felel meg = The car does not meet the requirements.
• ezért megbukik a műszaki vizsgán = therefore it fails the technical inspection.

So the logic is:

cause -> result

A useful contrast:

• mert = because
• ezért = therefore / so

Compare:

• Megbukik a műszaki vizsgán, mert nem felel meg. = It fails the inspection because it does not meet the requirements.
• Nem felel meg, ezért megbukik a műszaki vizsgán. = It does not meet the requirements, therefore it fails the inspection.

Hungarian often uses the present tense to express a future result if the context makes it clear.

So megbukik can mean:

• fails
• will fail
• is going to fail

In this sentence, the idea is a predictable consequence: because the car does not meet the standards, it will fail the inspection.

This is completely normal Hungarian usage.

Megbukik is the normal verb for failing a test, exam, inspection, or check.

Examples:

• megbukik a vizsgán = fails the exam
• megbukik az ellenőrzésen = fails the inspection/check
• megbukik a műszaki vizsgán = fails the technical inspection

In this sentence, the subject is the car, not a person. Hungarian allows that naturally: a car can fail an inspection.

Because the verb megbukik normally goes with vizsgán: literally fails on the exam.

So Hungarian says:

• megbukik a vizsgán
• megbukik a műszaki vizsgán

The ending -n here is the superessive case, often translated as on or sometimes at.

Also notice the form:

• vizsga -> vizsgán

The final a becomes á before this ending.

So this is not a direct object pattern. Hungarian does not usually say megbukik a vizsgát.

Literally:

• műszaki = technical
• vizsga = exam / test

But together műszaki vizsga means the official technical inspection of a vehicle, the check that shows whether it is roadworthy and meets legal standards.

So although it literally looks like technical exam, in natural English it is better understood as technical inspection, vehicle inspection, or roadworthiness test, depending on context.

Az is the definite article the.

Hungarian has two forms of the definite article:

• a before consonant sounds
• az before vowel sounds

Since autó begins with a vowel, you get:

• az autó

So:

• a kocsi
• az autó

Here it refers to a specific car, so the definite article is natural.

That article means the technical inspection.

Hungarian often uses the definite article in places where English may or may not use one, especially when the situation is specific and understood from context.

So a műszaki vizsgán means:

• at the technical inspection
• or more naturally in English, sometimes just in the technical inspection / on the inspection

It refers to the relevant inspection that this car is taking.

The sentence is natural and neutral as written:

Az autó nem felel meg, ezért megbukik a műszaki vizsgán.

Hungarian word order is flexible, but changes usually affect emphasis.

This version presents:

1. the topic: Az autó
2. the statement: nem felel meg
3. the consequence: ezért megbukik a műszaki vizsgán

You could rearrange things, but the emphasis would change. For example:

• Ezért az autó megbukik a műszaki vizsgán.
  More emphasis on therefore.

• A műszaki vizsgán bukik meg az autó.
  Stronger focus on where it fails.

So yes, word order can change, but the original is the most straightforward version.

Yes, that would be the natural positive counterpart.

• megfelel = meets the requirements
• átmegy a műszaki vizsgán = passes the technical inspection

So:

• Az autó megfelel, ezért átmegy a műszaki vizsgán.

This is a useful pair to remember:

• nem felel meg -> megbukik
• megfelel -> átmegy