I ran three, bidirectional, benchmarks using a dash cam on a fairly flat, paved road on the west boundary with the airport. I then transcribed the GPS time, latitude, and speed Surprising results: Nearly identical acceleration to 65-70 mph 2014 BMW i3-REx is speed limited to ~90 mph 2014 BMW i3-REx performance the same in EV or with Rex running The SRM3+ acceleration is set to 'Chill' versus 'Standard' so I need to compare these modes. Furthermore, there are other options like 'traction control' that may affect acceleration rate. Finally, I did not try to launch either car by holding the brake, full press the accelerator, and release the brake. However, I may wait until the GPS mouse arrives and add high resolution accelerometer data. My primary interest is in getting a net HP reading for both cars. I had used a maximum hill climb with the SRM3+ but initial results indicated a maximum of ~160 hp. This and earlier data suggests hp is limited up to about 70 mph. I suspect that road measured hp metrics requires speeds above 70 mph for each vehicle. Bob Wilson
I can verify that the chill mode will definitely not allow you to access full power even when pedal is all the way floored.
