I drove everywhere today for about 3 hours or so in our 80 plus temperatures (very warm for Seattle). I noticed the car was a bit sluggish but came to life when I had to out maneuver this redneck near Auburn... Other than that I equate it to running, I always seem to run better in slightly cooler temp. Glad to hear the BMW Seattle roadside assistance was efficient. Hope your repair is minor. 328Ci Step., 4500 miles.