zenxenophilia:

I actually thought about this for a long time, and because i have way too much time on my hands, I did a bit of digging.  According the the official TF Wiki, Megatron is 38 feet tall, which gives us a good starting point.  Now, it’s impossible to say for certain because every artist draws the characters differently, but I think this picture is probably an accurate depiction of Megatron and Tailgate’s height difference.

It looks like Megs might be leaning down just a tad, but we’ll say that his midway height is about at his hips, which would be 19ft high.  Since Tailgate looks to be around half that, I’m going to ball park his height at about 9.5 feet.  

Here we see that Swerve, Rewind and Tailgate are roughly the same height, so I’m going to assume that they’re also around 9.5-10 feet tall.

Rung and Pipes, on the other hand seem to have a good bit of height on the other three, coming up to about chest height on some of the other bots.  If we say Tailgate is about 9.5 feet tall, then Rung and Pipes appear to be around 15-17 feet.

So taking all that into account, I imagine that a human is going to hit somewhere between Swerve’s thighs and his hips depending on how tall they are.