Jag hoppas att försäkringen gäller om cykeln blir stulen.

In this sentence, att introduces a subordinate clause: att försäkringen gäller.

Swedish often uses att in places where English can use that, even if English sometimes leaves it out:

• Jag hoppas att... = I hope that...
• English: I hope the insurance covers it
• Swedish: Jag hoppas att försäkringen gäller

You may sometimes hear att omitted in casual speech, but keeping it is standard and very natural for learners.

Here, gäller means something like is valid, applies, or is in force.

The verb is gälla. Its present tense is gäller.

In insurance contexts, försäkringen gäller means:

• the insurance is valid
• the insurance applies in this situation
• the insurance covers it

So it is not just a general means or concerns sense of gälla. In this sentence, it specifically refers to whether the insurance policy is effective in the case described.

Försäkringen is the definite form: the insurance.

Swedish often uses the definite form when talking about something specific that is already understood from the context. Here, the speaker means a particular insurance policy, probably their own or the relevant one for the bike.

Compare:

• en försäkring = an insurance / an insurance policy
• försäkringen = the insurance

So Jag hoppas att försäkringen gäller means the speaker is talking about a specific insurance policy, not insurance in general.

For the same reason as försäkringen, cykeln is definite: the bike.

The speaker has a specific bike in mind, not just any bike.

• en cykel = a bike
• cykeln = the bike

In real-life Swedish, the definite form is very common when both speaker and listener know which thing is being referred to.

Om means if here.

The clause om cykeln blir stulen gives the condition or situation in which the insurance would apply.

So:

• om = if
• när = when

The difference matters:

• om cykeln blir stulen = if the bike gets stolen
  This presents it as a possibility.
• när cykeln blir stulen = when the bike gets stolen
  This sounds as if the speaker expects it to happen.

So om is the natural choice.

Blir stulen is a very common Swedish way to express gets stolen.

It uses:

• blir = present tense of bli (become / get)
• stulen = stolen

Together they form a bli-passive, which often corresponds to English get + past participle:

• cykeln blir stulen = the bike gets stolen

This focuses on the event happening.

Swedish also has another passive option:

• cykeln stjäls = the bike is stolen / gets stolen

Both are possible, but blir stulen often feels very natural in everyday language.

Because cykeln is a common-gender singular noun.

The participle stulen agrees with the noun it describes:

• en cykel → cykeln blir stulen
• ett barn → barnet blir stulet
• flera cyklar → cyklarna blir stulna

So the ending changes depending on gender and number, just like many adjectives in Swedish.

Yes. Om cykeln stjäls is also correct.

Compare:

• om cykeln blir stulen
• om cykeln stjäls

Both mean roughly if the bike gets stolen.

The difference is mostly stylistic:

• blir stulen often sounds a bit more conversational and event-focused
• stjäls is shorter and slightly more compact, sometimes a bit more formal or written in tone

A learner should understand both.

Because att försäkringen gäller and om cykeln blir stulen are subordinate clauses, and Swedish word order changes in subordinate clauses.

In a main clause, Swedish normally has verb second:

• Jag hoppas...
• Försäkringen gäller...

But after subordinating words like att and om, the subject usually comes before the verb:

• att försäkringen gäller
• om cykeln blir stulen

This is standard Swedish subordinate-clause word order.

This is a very useful question, because inte helps show the difference between main clauses and subordinate clauses.

Main clause:

• Jag hoppas inte... = I do not hope...

Subordinate clause:

• Jag hoppas att försäkringen inte gäller... = I hope that the insurance does not apply...
• ...om cykeln inte blir stulen = ...if the bike does not get stolen

Notice that in subordinate clauses, inte comes before the verb:

• att försäkringen inte gäller
• om cykeln inte blir stulen

That is an important Swedish pattern.

Yes. The infinitive is hoppas, and the present tense is also hoppas.

That is very common in Swedish. Many verbs have:

• infinitive ending in -a
• present tense ending in -ar

For example:

• tala → talar

But some verbs, including hoppas, belong to a group where the present tense ends in -as:

• infinitive: hoppas
• present: hoppas
• past: hoppades

So in this sentence, Jag hoppas simply means I hope.

No. In this sentence, hoppas takes a clause directly:

• Jag hoppas att...

You do sometimes see hoppas på, but it is used differently:

• Jag hoppas på fint väder. = I’m hoping for good weather.
• Jag hoppas att det blir fint väder. = I hope that the weather will be good.

So:

• hoppas på + noun
• hoppas att + clause

That is why på is not used here.

Yes, it is completely natural.

It sounds like something a person might say if they are worried about whether their insurance policy will cover bike theft.

A few close alternatives are also possible, for example:

• Jag hoppas att försäkringen gäller om min cykel blir stulen.
• Jag hoppas att försäkringen täcker det om cykeln blir stulen.
• Jag hoppas att cykeln är försäkrad om den blir stulen.

But your original sentence is idiomatic and correct.