I asked this question of my dealer when I bought mine, and his response was that the S model is tuned for more performance, and therefore has lower gas mileage. I didn't really buy that explanation, though thinking about it later, I thought it might be that the S model is programmed to favor keeping more charge on the battery rather than running in all-electric mode for longer periods. This way the battery is always available to provide extra boost to the gas engine when needed.I noticed there is about a 4-5 mpg difference in the EPA ratings for the hybrid AWD and the same model with the S package. Are they geared differently, or is there some other difference which makes the regular model so more fuel efficient?
That's why I wanted 2-wheel drive only. The AWD carries a weight penalty for the extra components. Of course, no dealer had one within 350 miles. I guess I'll learn to love the AWD this winter, and it did come with the incredibly wonderful steering wheel heater (missed from my beloved 2004 BMW X3, 6 MT). Yes, the trunk is smaller, but sufficient for our family. BTW, I'm already averaging above the EPA estimates, with less than 1K miles.Thanks - Sinecure, I was talking about the 4 mpg highway difference, which is significant.
The other problem I have is the smaller trunk. Not sure 9 CF will work.
Thanks for the answers guys.
Is there also a big difference in the gasser AWD Premium vs Sport?Hybrid EPA Estimates:
Premium | Sport
RWD 29/36/31 28/34/30
AWD 28/35/30 27/31/28
Combined difference is two mpg. Only explanation I can think of for the 4mpg highway difference is the tires on the sport.