The Audi RS3 engine is celebrated for its turbocharged five-cylinder roar, blistering acceleration, and track-ready performance, but is it truly flawless? While enthusiasts rave about its power delivery and sporty feel, some owners have raised concerns about maintenance costs, long-term reliability, and potential quirks that may surprise new buyers. In this analysis, we break down the RS3 engine’s strengths, weaknesses, and real-world performance, helping you decide whether this powerhouse is genuinely worth chasing—or if the hype might be overshadowing the practical realities of ownership.