Quote:
Originally Posted by exxxviii
I got my first 4 mile/kWh drive (of a material distance). Surprisingly to me, I seem to get way better efficiency in D mode versus B mode. Like, I can consistently get 0.3 - 0.5 miles/kWh in D.
- Trim & Year: xDrive50 2024
- Wheels & Tires: Factory 21" with Bridgestone Alenza 255/50R21
- Distance: 9.7 miles
- Road Type: Rolling suburban back roads & some highway
- Climate: Clear and mid-80s F
- Average Speed: 32.1 MPH
- Drive Mode: D Mode
- MyMode: Efficiency (99.5% of the trip)
- kWh Consumed: 4.6 kWh
- Efficiency: 4.0 miles/kWh
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So I’ve been using ‘B’ mode exclusively in my home area since I bought the iX.
But after reading your post above I did a ‘controlled study’ today:
Driving at a steady 40 mph in B, and with a constant throttle application, I then switched to D. The car started to accelerate, and to keep it at 40 mph I had to slightly back off of the throttle.
I then switched back to B and immediately the car slowed even though I held a constant throttle.
It’s almost as if there is always a small amount of Regen active when in B; (I know that perhaps this is nonsensical).
So perhaps it’s no wonder that our best efficiency might well be in D if perhaps B always exerts a certain amount of ‘drag’.
Next week I’m going to just drive in D and compare efficiency, although my actual driving dynamics won’t change.
Interested in the thoughts of the hive.