Looking for the perfect blend of performance, style, and practicality? We break down the Audi A5 and BMW 4 Series head-to-head—from design and interior quality to driving dynamics and tech features.

Like bickering siblings or Simpsons episodes, there seems to be no end in sight for the three-way tussle for supremacy between Audi, BMW, and Mercedes in the mid-size luxury sedan segment. Rivals have ...