File size look way to big for what I have in viewport

Hi I’m quite new to Blender and wanted to ask you a question about
blender file size. I have simple model as you can see on attached photo and my blender file size is 144mb. Can any body have look on my photo and help me figure it out what is happening.

What I have notice that selecting one wheel the statistic showing me that the wheels is build from 1.381 edges and the total is 26.939 edges, but I only have two of them you can see it on the second picture. Please help me!

You can’t tell by pictures alone.
What you can see in the picture is the amount of mesh.

If you make it with a similar amount of Vertex and save it, you can see the difference.
If Vertex is about 18,000, it is about 2.7mb.

dhdf

You can check all the information used in the scene in Outliner.

File menu > clean up > purge unused data will help

Problem solved! Thank you very much for you help!