I just got my car one week ago (Base model 2.5, Obsidian Black, black forged alloy wheels), but something doesn't seem right on my car regarding the Ideal Range displayed on the VDS. Over that past 3 days, I've done a number of tests where I drive between 20km and 30km as conservatively as I can, and see if I can get my actual mileage to match what is displayed as "ideal". Here are some points: 1) All my driving has been done at night with lights on, stereo on, heater off. 2) All city driving, a lot of stop and go. 3) Accelerate very slowly, max speed about 60km/hr, no friction braking used if at all possible to avoid it. Anyway, I'm driving as "ideal" as I possibly can for these tests. 4) Outside temperature is quite cool, but not freezing. 5) Fairly flat course. 6) Driving alone, I weigh about 85kg. 7) Soft top is on the car... 8) Ideal km remaining seems to drop in 2km increments most of the time (sometimes 1km, but more often 2km which seems strange) 9) Charing in standard mode with 100V / 15A. Generally I start off with the battery pack about 1/2 full. 10) All driving done in standard mode. Anyway, pretty consistently I'm getting 20-25% less ideal km than the VDS shows, even though by all counts I'm driving in a manner that should yield the ideal range at least! The other thing that seems strange is that I went for a drive in a Tesla demo car today (2 people in the car), and conservative driving seemed to make actual mileage and ideal range track pretty closely. The demo car is also a brand new 2.5, but a sport in this case. * Could it be because my car is new (just 3 or 4 charges so far)? The demo car was new, but it has more than 2000km logged so far. * Is it possible something is wrong with the ESS? * Do different cars just have different efficiencies depending on the car? (20-25% seems like a pretty big variance though!) * Are my 20-30 km drives just too short? (we just went 6km or so in the demo car though, and it seemed to track) * Could it be it's just too much stop and go? Should I expect 20-25% percent less range in such an environment even when driving like a grandma? Unfortunately I had to take the car back to the dealer today because a reflector fell off the back, but should be back tomorrow. I'll get the log analyzer fired up and see if that might offer any clues.... would be helpful to hear about peoples' experiences in trying to get ideal range out of the car, and how it's possible to do it.