How many letters does the top answer for “large luxurious car; usually driven by a chauffeur” have?

The most common answer is limo (4 letters).

Crossword clue: large luxurious car; usually driven by a chauffeur

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

limo 4 letters wn-def

large luxurious car; usually driven by a chauffeur

limousine 9 letters wn-def

large luxurious car; usually driven by a chauffeur