There are 4 types of transmission for the S-Series:

MP2 – Manual Transmission, found in SOHC models MP3 – Manual Transmission, found in DOHC models MP6 – Automatic Transmission, found in SOHC models MP7 – Automatic Transmission, found in DOHC models The transmissions found in SOHC models are geared more for economy, those in DOHC models are geared for acceleration. Gearing Ratios: This excellent gear ratio chart was created by Saturn forum user “Sattyllac”, and is used with his permission.