From Longman Dictionary of Contemporary Englishsubcompactsub‧com‧pact /sʌbˈkɒmpækt $ -ˈkɑːm-/ noun [countable] American English a type of very small and inexpensive car
Examples from the Corpus
subcompact• A subcompact weekly rate, excluding taxes, insurance and petrol, can be a mere £55.• Instead, we headed straight for the local car-rental office and hired ourselves a zippy purple subcompact. 