Learn Arabic (Modern Standard): السيارة هناك.

You can tell because السيارة ends with a Taa' Marboota (ة). This tied-up letter at the end of a word is the most common sign that a noun is feminine in Arabic.

Do I pronounce the Taa' Marboota in this sentence?

Because we usually pause or drop the final vowel at the end of a word when speaking casually, you don't pronounce the ة as a strong "t" sound here. Instead, السيارة just ends with a short "ah" sound (as-sayyaara). You only hear the "t" sound if you connect it quickly to the next word with its formal grammatical vowels.

Where is the word for "is" in this sentence?

Arabic does not use a word for "is" or "are" in simple present-tense sentences. Just placing the definite noun السيارة next to the location هناك is enough to mean "The car is there."

Why does the pronunciation sound like "as-sayyaara" instead of "al-sayyaara"?

The word begins with the letter س (seen), which is a "sun letter". When the prefix for "the" (ال) attaches to a sun letter, the "l" sound disappears and the first letter of the noun is emphasized or doubled instead.