[2] As of January 2017[update], the Aqua/Prius c is the second highest-selling Toyota hybrid model after the regular Prius, with 1,380,100 units sold worldwide.

Its design was previously previewed by the Prius c concept car which was unveiled at the January 2011 North American International Auto Show.

[8] A second facelift was introduced in June 2017, with the crossover-inspired variant redesigned and renamed as the Aqua Crossover.

Built on the GA-B platform shared with the XP210 series Yaris, the wheelbase has been extended by 50 mm (2.0 in) compared to the previous generation.

It retained the 1,695 mm (66.7 in) width, allowing it to remain in the "compact car" category of Japanese government dimension regulations.