2018 Audi A4 Available Trims/Specs: 1.4 TFSi, 2.0 TDi, 2.0 TDi ultra, 2.0 TFSi g-tron, 30 TDi, 35 TDi, 35 TFSi, 1.4 TFSi (ABA-8WCVN), 2.0 TFSi (DBA-8WCVK), 2.0 TDi Quattro, 2.0 TFSi, 2.0 TFSi Quattro, 2.0 TFSi mHEV, 2.0 TFSi ultra, 3.0 TDi, 3.0 TDi Quattro, 40 TDi, 40 TDi Quattro, 40 TFSi, 45 TFSi, 45 TFSi Quattro, 2.0 TFSi Quattro (DBA-8WCYRF)