2021 Audi A4 Available Trims/Specs: 30 TDi, 35 TDi, 35 TFSi, 40 g-tron, 35 TDi (3CA-8WDEZ), 40 TDi, 40 TDi Quattro, 40 TFSi, 45 TFSi Quattro, 50 TDi Quattro, 35 TFSi (3AA-8WDEM), 40 TDi Quattro (3CA-8WDTPF), 40 TDi Quattro (3DA-8WDETF), 45 TFSi Quattro (3AA-8WDDWF), 40 TFSi Quattro