I have a Miele, on a wooden floor. It's a big old thing and until I recently did some work with the pipework at the back to allow it to go further under the worktop there was exactly 5mm of clearance in front of the machine when the outward opening door was opened. In a year of twice daily use it didn't move a mm!
A few years ago, my mum replaced her Miele. I couldn't work out why it projected further forward than the previous one. Without pulling it out, I slid a tape measure in and measured the depth of the lid. I then measured the depth of unit. After much head scratching, I pulled the machine out. It turned out the bulge on the reverse side extends past the lid. I had to hack away the plaster to push it back.