From Longman Dictionary of Contemporary Englishjalopyja‧lop‧y /dʒəˈlɒpi $ -ˈlɑːpi/ noun (plural jalopies) [countable] old-fashioned TTCOLD/NOT NEWa very old car in bad condition → banger(2)
Examples from the Corpus
jalopy• What did he do, other than ride around in his jalopy and sometimes help out in the supermarket?• The front fender of his jalopy is bashed and the seats are bedecked with paper ribbons, decorations from the dance.• But long before that jalopy set out on Route 66, the wild oat had done its landscape-altering work. 