In most parts of New York you will have excellent public transit at your fingertips. The city's subway system is one of the busiest in the world and has over 660 miles (1062 km) of track reaching into every borough except Staten Island. Billions of dollars are being spent to expand the subway's reach. Buses make up for the areas not covered by subways: over 5,600 buses cover nearly 3,000 miles with their routes.
A MetroCard is required for travel on the subway or bus and costs USD $116.50 per month, though senior citizens and those with a disability qualify for reduced fares. Companies with over 20 employees now provide a tax credit to employees who require a monthly MetroCard to come to work.
For people living in Staten Island but working in Manhattan the free Staten Island Ferry is the most common way of commuting.
Having a car in most of Manhattan and many parts of Brooklyn, Queens, and The Bronx can actually be a headache. The main roads can be snarled with traffic during rush hour, making public transit preferable for a commute. Parking your car in a garage can cost hundreds of dollars per month and street parking is both an exercise in frustration (good luck finding a spot as you spend your time circling the block) and an inconvenience (have fun making sure you remember to move your vehicle to the other side of the street during street cleaning so you don't get fined). Plus you run the risk of having your car vandalized. With that said, there are parts of the city that don't have good transit and a car may be necessary.
TRANSIT AND WALKABILITY RATINGS
For each New York City neighborhood you'll see a Transit rating and a Walkability rating. The Transit rating tells you how good and reliable public transportation options are in that neighborhood. The Walkability rating tells you how many local amenities (shops, restaurants, fitness options, etc.) you can walk to in that neighborhood.