auto vs subcompact

auto

noun
  • A car with an automatic gearbox / transmission. 

  • An autorickshaw. 

  • An automobile. 

  • A setting for automatic operation. 

  • An automatic gearbox / transmission. 

subcompact

noun
  • Something that is smaller than the compact version, especially a very small car. 

How often have the words auto and subcompact occurred in a corpus of books? (source: Google Ngram Viewer )