14. Audi TT (1998)
The Audi TT redefined automotive style with its Bauhaus-inspired minimalist design and clean, rounded lines. Its geometric purity and balanced proportions set a new standard for coupes and roadsters, influencing a wave of modern, visually striking vehicles. The TT’s focus on simplicity and form-over-function became a hallmark of late-1990s and early-2000s car design.