Is the word litros the same in Brazilian and European Portuguese?

Yes

The word "litros" is identical in spelling, meaning, and grammar in both Brazilian and Continental Portuguese. The only difference is in pronunciation:

• The "s" sound: In most Brazilian dialects (such as in São Paulo), the final "s" is pronounced as a soft [s], like the "s" in "sun." In Continental Portuguese, the final "s" is pronounced as a postalveolar fricative [ʃ], like the "sh" in "shoe." (Note: In Rio de Janeiro, Brazilians do use the "sh" sound, making it similar to Portugal in that specific region).
• Vowel reduction: In Continental Portuguese, unstressed vowels (like the "o" in litros) tend to be much more reduced or "closed" than in Brazilian Portuguese, where vowels are often more open or neutralized.

Brazilian Portuguese Examples

1. Eu preciso comprar dois litros de leite. (I need to buy two liters of milk.)
2. A garrafa tem um litro e meio. (The bottle has one and a half liters.)
3. Beber dois litros de água por dia é importante. (Drinking two liters of water per day is important.)
4. Quantos litros de combustível cabem no tanque? (How many liters of fuel fit in the tank?)
5. Sobraram apenas alguns litros de suco. (Only a few liters of juice were left.)

Continental Portuguese Examples

1. Preciso comprar dois litros de leite. (I need to buy two liters of milk.)
2. A garrafa tem um litro e meio. (The bottle has one and a half liters.)
3. É importante beber dois litros de água por dia. (It is important to drink two liters of water per day.)
4. Quantos litros de combustível cabem no depósito? (How many liters of fuel fit in the tank?)
5. Restam apenas alguns litros de sumo. (Only a few liters of juice were left.)