Mercedes A45 RSS

The Hot Hatch Tuning Arms Race — RS3 vs A45 vs Golf R Three cars, three philosophies, one question: which hot hatch delivers the most performance per tuning dollar in 2026? The Audi RS3, Mercedes-AMG A45 S, and Volkswagen Golf R represent the absolute pinnacle of the compact performance segment. All three make serious power from the factory, all three respond dramatically to ECU tuning, and all three are daily-drivable four-door cars that can embarrass supercars on a straight. But when you start modifying them, the differences become enormous. At YPG Motorsport, we've tuned hundreds of cars across these platforms....