The Audi A1 30 TFSI S Line 5-door is a smart buy: its turbocharged 1.0-liter engine delivers spritely performance and great fuel efficiency. The S Line trim gives a sporty, premium look inside and out, while the five doors maximize practicality. Inside, you get high-quality materials, crisp infotainment, and driver-assist tech — all in a compact, fashionable, easy-to-park package that’s fun and refined.