How many letters does the top answer for “a wheeled vehicle that has two wheels and is moved by foot pedals” have?

The most common answer is bicycle (7 letters).

Crossword clue: a wheeled vehicle that has two wheels and is moved by foot pedals

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

bicycle 7 letters wn-def

a wheeled vehicle that has two wheels and is moved by foot pedals

bike 4 letters wn-def

a wheeled vehicle that has two wheels and is moved by foot pedals

a vehicle with three wheels that is moved by foot pedals 56% similar → tricycle, trike, velocipede