Maintenance costs for an Audi S5 are typically higher than standard sedans, with an average annual cost between $900 and $1,200, as it requires specialized synthetic oil, high-performance brake components, and specific Quattro system fluid changes; however, the 2026 model often includes "Audi Signature Care" covering scheduled maintenance for the first three years. Untuk pembeli yang sedang mempertimbangkan Audi S5, maklumat ini penting kerana ia mempengaruhi ulang-alik, kegunaan keluarga, perjalanan jauh atau kos pemilikan. Nilainya bukan sekadar angka, tetapi bagaimana ia membantu kereta ini lebih mudah digunakan setiap hari.