Working on a customer's Ford Focus not too long ago.
Now, for reference, it was a 2008 model and had just passed 100,000 miles.
So, 13-14 years old.
I remember shaking my head noticing the strut towers whilst I was pulling the spark plugs out.....
And then, comparing same area with my first gen P80 car....(V70) which is now 22 years old and has done 250,000 miles and is 8 years older....
I can also say that my previous S40 T5 (sitting on same chassis as the above focus, and slighty older 2007 '57'-plate) had zero rust in those areas. These Fords are just not built to last at all.