Wall thickness in garage, uninsulated, no clinker

Hey,

we are still pretty much at the beginning of the planning and unfortunately have a narrow plot. Accordingly, the garage should not be too wide, but still be wide enough to get out on both sides.

I think an internal dimension of 3.20 m is acceptable. We were surprised that a construction company specifies 34 cm as wall thickness. I find that quite a lot for an uninsulated garage.
Also, the sides will not be clad with bricks because on one side it adjoins our house and on the other side a neighboring/outbuilding of a family member (boundary development).

Could you please tell me how thick your garage side walls are and possibly the internal dimensions and garage door width?
Or what is to be chosen as the minimum thickness and why?

34 cm per wall or total width for the masonry? I know about calcium silicate masonry of 17 cm for garages, which would then total the specified 34 cm, which would reduce the usable width. I would hardly go below that, the 11 cm stones are always only used for non-load-bearing interior walls in shell construction, whereas the 17 cm stones are also used for load-bearing walls.

By the way, precast concrete garages already exist with a thickness of 6 cm, so 12 cm in total. However, anything over 3 m in width requires heavy transport; still, I would also get a quote for that.

Okay, that already sounds like what I expected, with us it was specified as 34 cm each, so twice as wide...

I have also heard about the prefab garage, but it is supposed to be a brick-clad house with a passage to the garage, I think it will not fit visually and functionally... but I am happy to be convinced otherwise