Based on the situation you described, you have a budget of 30w provided by your parents to buy a car, and your internship salary is 6k per month. Your living expenses like food and housing are covered by your parents, but other expenses are your responsibility.
To determine if 6k is enough to maintain the car, consider the following:
1. **Fuel Costs**: Calculate the fuel cost based on the car's fuel economy and current fuel prices. You plan to drive about 1500km a month, so this will be a significant factor.
2. **Insurance**: Check the cost of car insurance in your area for a new driver.
3. **Maintenance and Repairs**: Consider regular maintenance costs and unexpected repairs.
4. **Other Expenses**: Include costs like registration, parking, and tolls.
If your monthly expenses for the car (fuel, insurance, maintenance, etc.) fit within your budget after accounting for your other personal expenses, then 6k might be sufficient to maintain the car. However, it's important to have some savings for unforeseen expenses.