RIDC have a useful website that will give you useful dimensions.
I’ve just gone through this same thing. Bikes go in forwards with the bars/forks turned 90° so the bars go over the front seats.
I’m 5’10” and the front end of my bike without the wheel is 850mm. This is too tall for an Octavia which is closer to 750mm with the seats as flat as they go.
The only cars I’ve found where they go upright with the back wheel still on is the Zafira and the Touran.
I believe the Yeti will do it, but I didn’t want the bother of removing/storing the second row seats to get the length.
In fact, I was put off the 2010-2015 Touran as the metal seat bases would run the forks.
The 2015-present Touran, they fit like a dream.
Toyota Verso is also one that they’ll stand up in, just remembered.
*We keep the bikes along the side rather than diagonally as we need space for kit and a 27kg dog. That means that length can also be an issue*