Mazda 6 Service Manual: No.25 a/c is not cut off under wide open throttle conditions

No.24 a/c is always on or a/c compressor runs continuously

No.26 exhaust sulphur smell

Other materials:

Mazda 6 Service Manual: Drive Selection (Some models)
Drive selection is a system to switch the vehicle's drive mode. When the sport mode is selected, vehicle's response against accelerator operation is enhanced. This provides additional quick acceleration which may be needed to safely make maneuvers such as lane changes, merging onto freeways, o ...

Mazda 6 Service Manual: Towing Description
We recommend that towing be done only by an Authorized Mazda Dealer or a commercial tow-truck service. Proper lifting and towing are necessary to prevent damage to the vehicle. Government and local laws must be followed. A towed vehicle usually should have its drive wheels (front wheels) off t ...