Dear Sir.

My 2001 LS430 have a power, normal, snow driving mode.

If i use the snow mode every day, can save a gas better then normal?

The snow is set-up very low-power status, I guess.

Is it possible?

 

I would say snow mode would probably save more gas since the rpms are kept low, but I may be wrong.

 

I would say no. In most cars, snow mode starts you in 2nd gear to reduce torque. It takes more power to get these big cars going from a stop in 2nd gear so I would assume it is using more gas. Snow mode is meant to be used briefly when you're having trouble getting the car moving, not as something to leave on.

I could be wrong about how Lexus does it, but my experience with Volvo is that snow starts you in 2nd.

 

You are correct. Snow mode switches the transmission to a higher gear to prevent the normal torque of 1st gear from spinning the tires at a standing stop. In Snow mode on dry pavement, the tendency would be to put more foot on the gas pedal to accelerate, resulting in reduced gas efficiency.

 

Dear every.

Thank's your advice. It is very helpful to me.