| A4 & A4 Quattro 1.8L SFI, (Bosch Motronic 3.2) | PCV, EVAP, TWC, FR, SPK, (5) HO2S, CEC, MIL EVAP-CKV, EVAP-CPRV, EVAP-LDP, SPK-CC | — |
| 2.8L V6 SFI (MMS 410) (3) | PCV, EVAP, (6) TWC, FR, EGR, SPK, (9) HO2S, CEC, MIL EVAP-CPRV, EVAP-SNR, EVAP-VC, EGR-T, EGR-VRSV, SPK-CC | 1 or 2 |
| A6, A6 Quattro & Quattro Wagon 2.8L V6 SFI (MMS 411) (4) | PCV, EVAP, (5) TWC, FR, EGR, SPK, (7) AP, (5) HO2S, CEC, MIL EVAP-CPRV, (8) EVAP-DPS, (8) EVAP-LDP, EVAP-SOV, EVAP-VC, EGR-T, EGR-VRSV, SPK-CC, AIS-SV | 1 or 2 |
| Cabriolet 2.8L V6 SFI (MMS 410) (3) | PCV, EVAP, (5) TWC, FR, EGR, SPK, (5) HO2S, CEC, MIL EVAP-CPRV, EVAP-DPS, EVAP-VC, EGR-T, EGR-VRSV, SPK-CC | 1 or 2 |
| (1) Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type. (2) See AUDI in EGR FUNCTION TESTING section. Use specified test number. (3) Motronic Management System (MMS) 410. (4) Motronic Management System (MMS) 411. (5) Equipped with 2. (6) FWD models equipped with one TWC. Quattro models equipped with 2 TWC. (7) AP is an electric motor. Located in right front corner of engine compartment. (8) If vehicle is equipped with EVAP-DPS; EVAP-LDP is installed but not activated. (9) FWD models equipped with 3 HO2S. Quattro models equipped with 4 HO2S. |
