You know what penalties I hate the most?
When you make a mistake and go off track, which in absolutely no way gains you anything even approaching an advantage, and in actual fact loses you places, and then you still get a penalty for leaving the track!? Like seriously, just rub some salt in the wound why don't you!
This. I got a 2 second penalty the other day for this. It seems that rather than working out of you gained an advantage for being off the track (I.E. a shortcut) it just looks at whether you maintained speed and how long you were off the track. If you didn't slow to a crawl (such as getting stuck in a gravel trap) and you stay off the track for a little while, the game seems to assume that you took a shortcut. As such, if I run wide I try to trun straight back to the closest part of the track to where I come off, even if it's slower than taking a less abrupt angle to get back on the track. Doing this seems to avoid the penalty, but also means it takes a little longer to get back on the track Overall you end up better off though.
I always struggle getting rid of penalties - i slow down on a straight and nothing happens, then I go around the corner normally and it starts ticking down...?!
I suspect that it's sometimes quicker to just leave the penalty until the end, than try to work out the correct scenario for getting the penalty to "count down".
Last night the penalty system seemed to be working well though. I had a few scrapes and knocks with other cars (as you do in a tight group) and got nothing other than the odd SR decrease, but one asshat was purposely shoving every car that he passed - literally, side-by-side with him and he'd turn into you, despite going down a straight and having no reason to move over. I watched him batter cars in front of me, and later cars behind me. Every time I saw him, he was battering other cars, the whole time. Right at the end he caught up with me (god knows how with all the "arguing" he was doing with everyone), and forced me into another car in a tight turn, giving him the position.
We crossed the line 6th and 7th, though I was quickly awarded 6th as his 9 seconds of penalties dropped him to 11th. Justice!
I'm amazed that he only had 9 seconds, as the whole race he was constantly swerving into people the entire time and using people as brakes/corner guides.