In the fiercely competitive automotive industry, the introduction of a single innovative model can often spell the difference between revival and ruin for struggling brands. Automakers facing declining sales and fading brand equity frequently bet their futures on vehicles designed to captivate buyers, reinvigorate their image, and reclaim market share. Yet, despite bold designs, cutting-edge technologies, and ambitious marketing campaigns, some promising vehicles fail spectacularly, sealing the fate of their manufacturers. This article explores ten such cars—vehicles that held immense promise and could have turned the tide, but ultimately couldn’t deliver the salvation their brands desperately needed.