I did not play oblivion when it was first released. I was just wondering if it had as many bugs (or more) as Skyrim has when it first came out. For example, quest bugs, performance drops, freezing, etc etc

It had way more. Bethesda has been getting better at stamping out glitches over the years.
Daggerfall had so many glitches when it came out lol

I can't remember but when it first came out it seemed quite similer.

Ok thanks for telling me. I just wanted to know if it was common for Bethesda to release their games so bugged :/

Every Bethesda game is a can of worms at release. They make big worlds, which inevitably means lots of bugs both data-related and engine-related. I can forgive them that. Skyrim isn't unplayable either as a game or unrunnable as a program. It's not worse than any other TES game.

What I cannot forgive is the blatantly obvious bugs in the UI and the main quest that would have been ridiculously easy to spot for anybody who actually tested the game. I found my first bug 5 seconds after the game started, with the mouse having weird non-uniform movement speeds. Then right after the character generation started, I found 3 bugs in the course of as many minutes: 1, game thinks you have an xblock controller by default 2, key tips in menus do not update to reflect the actual key you have bound and 3, using mouse to move head in face gen makes sliders stop responding. I also love a bug later on, right in the main quest, which cannot be missed in any way.

These are obvious things. Either they did NO testing whatsoever on some parts of the game, or they did testing, fixed the problems, and somebody reverted a pile of changes they shouldn't have just before the game went gold without it being noticed. Either way, it looks very bad. Obscure bugs that are the result of freakish alignment of many circumstances, fine, that happens. NPC "Foo" is missing for quest "Bar" if you try to finish the quest before noon on Sundays while carrying the Item of Inconvenience. Yeah, okay, nobody expected that to happen. But bugs right in the middle of the road that your customers fall over face-first? Unacceptable.

Skyrim rules, in case you all didn't know.

Found a bug as soon as I started my first character, Instead of the game opening with the cinematics of you in a cart, when I started my first character, it spawned me outside of a cart with 3 others, I couldn't move just look around.

Now see, this is part of the downside of being a PC player - which I am myself. I played with mouse and keyboard for a few days before I had a non-wireless 360 controller delivered to me. Never had a problem with it. I never remapped any keys, but when I plugged in the 360 controller, all the keytips automatically went from referring to keys to the appropriate button on the 360 controller. I wonder if perhaps there's just an issue with the combination of Skyrim and your particular PC? I'm having an issue with ALT-TABbing on mine that almost nobody else is experiencing, but which Oblivion also has on both this laptop and my older laptop. So testing the PC version of the software will kinda inherently be an imperfect process, because of the varying hardware. Things have come a long way since the days of having to tell your game what kind of graphics card and sound card you were using, but there are still the occasional issues.

This. Each BGS game has been more stable for me, with FO:NV and Skyrim the best by far. It's hard to say for sure, but I think there were many more people who couldn't play Oblivion at release than Skyrim.