Is Los Angeles a walkable city?

Nope.   :)

Certain areas are walkable. Santa Monica, Venice Beach, Beverly Hills, West Hollywood, Silver Lake, Manhattan Beach. But getting between them would be easiest via Uber or a rental car. Public transport will get you there, but you pay with your time.

Although there are some great places/neighborhoods in LA to walk and even hike, I would not call it a walkable city. You need a car to get around.

If you plan to stay in one area (say West Hollywood) and only cover that area, then walking around there isn't bad. However, in order to actually see and experience LA you'll need a car or to use uber to get around appropriately. As a whole, I would most definitely NOT refer to LA as a walkable city...sorry! Hope this info helps!

If it's your first time in the city and you want to see a lot, I would absolutely rent a car. Some of the neighborhoods are walkable--downtown, Santa Monica, Venice. But getting between them is a huge pain without a car. And though Ubers are cheap (at least cheaper than in most other cities), it'll really add up, especially if you get stuck in traffic.

Thinking of LA as one city is a common mistake made by most tourists. LA is truly a compilation of smaller cities and neighborhoods all with different things to offer. These neighborhoods are very walkable but you should not expect to be able to walk from Downtown to Hollywood to Santa Monica. You can walk Santa Monica, Venice Beach, Hollywood, Downtown Los Angeles, Beverly Hills, West Hollywood, Abbot Kinney all separately but will need a car to get around from place to place. Another option is to take Lyft or Uber.

No not walkable. All trippy writers agree that you can walk some areas but to get around you need a vehicle. LA is a sprawling metropolis of vast geography and it takes quite a while to simply comprehend all its diverse beaches, hills, canyons and shopping districts. So take your time and you will make many wonderful discoveries.

No.  Not even a little bit.  More importantly, traffic is so bad at certain times it makes getting from one part of the city to another almost impossible.  

It is not a friendly walking city at all. In fact, it's also lacking in public transportation. If you live or are staying in an area and don't have far to walk it's not too bad – the Beach Cities and Santa Monica, Downtown Los Angeles even Hollywood are fine – but this is a place of the car culture.

Plus, it's a very spread out city so even if it were walking friendly you could not possibly walk it. L.A. is actually comprised of 85 separate smaller cities. My suggestion is to pick a place you like, spend a couple days there walking around, then move onto another place. 

Here's more on L.A.:
https://www.pubclub.com/destinations/united-states/california/los-angeles/

Ever hear the song "Nobody walks in L.A"? It's mostly true. Everything is so far in between. You're better off with a car if you plan on seeing all of it.