Tiny =
Subcompact car - Wikipedia, the free encyclopedia
If you want beter classification, Smart/VW Up = super tiny class
Yaris/Polo/Clio= tiny class
Corolla/Focus/Golf/Elantra = lower middle class- what you call compact
BMW 3/ Ford Mondeo(Fusion), Cadillac CTS, Accord, Camry
(Avensis in Europe) = middle class
BMW 5, Merc E, Audi A6, = upper middle class.
BMW 7/ Merc S, Audi A8, Caddilac better models, cheaper RR's and Bentley's = upper class
Maybach, better RR and Bentley's = top
#edit: added last class for better distinction