Bensínið kostar mikið.

to cost

Breakdown of Bensínið kostar mikið.

• mikið: a lot
• bensínið: the gasoline

Questions & Answers about Bensínið kostar mikið.

What is bensínið in this sentence? Why does it end with -ið?

bensínið is the definite singular form of the neuter noun bensín (petrol/gasoline). Icelandic marks the definite article by suffixing it to the noun:

• bensín = “petrol” (indefinite)
• bensínið = “the petrol” (definite; -ið is the neuter‐singular article)

Is mikið an adjective describing bensínið, or something else? Why doesn’t it agree in gender and case?

Here, mikið is an adverb modifying the verb kostar (“costs”). It means “a lot” or “much” and never changes form. If you wanted an adjective meaning “expensive,” you would use dýr (e.g. Bíllinn er dýr – “The car is expensive”).

Why is the verb kosta written as kostar here?

kosta means “to cost.” In the present tense it conjugates as:
• ég kosta
• þú kostar
• hann/hún/það kostar
• við kostum
• þið kostið
• þeir/þær/þau kosta
Since bensínið is 3rd person singular, we use kostar.

Could I say Bensínið er dýrt instead of Bensínið kostar mikið? Are they interchangeable?