Det er lite bensin igjen, så vi må stoppe før motoren stanser helt.

In Norwegian, det er is the standard way to say there is / there are or to introduce a situation.

So:

• Det er lite bensin igjen = There is little petrol/gas left

Here, det does not mean a specific it. It works as a kind of dummy subject, much like English there in there is.

This is a very common question.

• lite = little / not much, often with a negative sense: not enough
• litt = a little / some, usually more neutral

So:

• Det er lite bensin igjen = there is little gas left, and that is a problem
• Det er litt bensin igjen = there is a little gas left

In this sentence, lite helps explain why they need to stop.

Here, igjen means left or remaining.

So:

• lite bensin igjen = little gas left

But igjen can also mean again in other sentences. Norwegian learners often notice this double meaning.

Examples:

• Vi prøver igjen = We try again
• Det er litt kaffe igjen = There is a little coffee left

The context tells you which meaning is intended.

Because the sentence contains two full main clauses joined together:

1. Det er lite bensin igjen
2. så vi må stoppe før motoren stanser helt

In Norwegian, a comma is normally used before a coordinating conjunction like så when it joins two complete clauses.

So the comma is not optional decoration here; it reflects the structure of the sentence.

Here så means so, and it is acting as a coordinating conjunction linking two main clauses.

After this kind of så, normal main-clause word order is used:

• så vi må stoppe

A useful comparison:

• så vi må stoppe = so we have to stop
• derfor må vi stoppe = therefore we have to stop

With derfor, Norwegian uses inversion (må vi), but with coordinating så, it normally does not.

Because må is a modal verb, and modal verbs in Norwegian are followed by the bare infinitive.

So you say:

• vi må stoppe
• jeg kan kjøre
• hun vil vente

Not:

• vi må å stoppe

This is similar to English:

• we must stop
• not we must to stop

Here stoppe is used intransitively, meaning to stop without a direct object.

So vi må stoppe means something like:

• we have to stop
• we have to pull over
• we need to stop the car

You do not need an object after stoppe in this sentence, because the vehicle being stopped is understood from the context.

Both verbs can mean to stop, and in many situations they overlap.

A rough guide:

• stoppe = very common, everyday, often the first verb learners meet
• stanse = also common, but can sound a bit more formal or a bit less casual in some contexts

In this sentence:

• vi må stoppe = we have to stop
• motoren stanser helt = the engine stops completely

Using two different verbs also avoids repeating stoppe twice in one short sentence.

Because Norwegian very often uses the present tense for future meaning when the context already makes the time clear.

That is especially common after time words and conjunctions like før, når, and etter.

So:

• før motoren stanser helt

means:

• before the engine stops completely

Even though the stopping has not happened yet, the present tense is the natural Norwegian choice here.

Because før introduces a subordinate clause.

In Norwegian, subordinate clauses usually do not follow the normal main-clause verb-second pattern. Instead, the subject typically comes before the verb:

• før motoren stanser helt

Compare:

• Main clause: Motoren stanser helt
• Subordinate clause: før motoren stanser helt

So the word order here is exactly what you would expect after før.

Because it refers to a specific engine: the engine of the vehicle they are in.

• motoren = the engine
• en motor = an engine

Norwegian uses the definite form when the thing is specific and identifiable from the situation. In this sentence, there is clearly one relevant engine, so motoren is the natural choice.

Helt means completely or entirely.

So:

• motoren stanser = the engine stops
• motoren stanser helt = the engine stops completely

It emphasizes that the engine will fully die, not just lose power for a moment or sputter briefly.

Yes. That would be perfectly natural.

• før motoren stanser helt
• før motoren stopper helt

Both are understandable and correct. Stopper may sound a bit more everyday to many learners, while stanser can sound slightly more formal or simply stylistically different.

So if you said før motoren stopper helt, you would still be saying essentially the same thing.