I finally experienced the crazy stuttering and loss of power trying to accelerate on part to medium throttle in 2nd, 3rd, and 4th gears this morning. It is 28 degrees outside, the temp gauge was at midscale. I probably had been driving around 4 minutes. Felt like a miss, loss of fuel, or dumping fuel. I could barely get by an Acura MDX. Mine has had the software recall. Mazda needs to get us some software that actually works. Someone here has to work for Mazda, help us please!!! I'm running Exxon 93 octane, which is the best brand in my town. We have Sheetz, Hess/Wilco, Citgo, Crown, and an Amoco- but it's out of the way.