Mazda 6 Service Manual: No.5 no creep at all

No.4 excessive creep

No.6 low maximum speed and poor acceleration no.7 no shifting

Other materials:

Mazda 6 Service Manual: Brake/Clutch Fluid
Inspecting Brake/Clutch Fluid Level WARNING If the brake/clutch fluid level is low, have the brakes inspected: A low brake/clutch fluid level is dangerous. A low level could indicate brake lining wear or a brake system leak which could cause the brakes to fail and lead to an accident. The b ...

Mazda 6 Service Manual: Intermittent concern troubleshooting
  Vibration Method 1. If malfunction occurs or becomes worse while driving on a rough road or when engine is vibrating, perform the steps below. Note There are several reasons vehicle or engine vibration could cause an electrical malfunction. Some of the things to check for are: ...