Whats the average engine check light time?
 

How long til i get one?

When the engine and trans computer detects a serious problem it will come on.

Honestly, that was not the answer i wanted. I want an average mileage, or age. and im talking about an average daily driver, no racing

There are at least 50 different errors that can turn that turns light on. It all depends on what fails first. It you want ot see one, just leave the gas cap loose and drive it for a couple of days.

I do not see how anyone can guess at this. There are too many variables.

it is gonna light right before your smog test:)