So I did pick up my hummer yesterday, but the rest of my day didn't quite go as planned. Went out early this morning before traffic picked up to get some experimentation in, so here's the data from that. I intended on doing 4 loops but didn't have enough battery to complete the 65 mph loop.
53.5 mile loop on I-75.
These are all numbers derived directly out of the BECM. Quite a bit of headwind on the northward part of the trip. Temperature stayed between 27 F and 29 F the entire test. 80 mph loop was in the dark, so the heater consumption might be just a little bit swayed because of that, but really doesn't seem like by much. Started at 95% charge and ended at 21%. For the entire trip, Energy Display says 173.8 miles driven and 160 kWh consumption.
Some observations:
My assumption about low efficiency vehicles having less of a penalty for heating in the winter time seems to be true.
BECM estimated total battery capacity was 217.26 kWh at the start of the trip, 214.90 kWh at the end. Probably still need more miles for it to settle on actual capacity.
BECM seems to keeps track of energy recaptured during the charge cycle but I don't see it displayed on the car anywhere. The value given is 10.6 km. Not sure if that's amount of miles recovered or the amount of distance covered while under regen.
There is an actual "One Pedal Driving" mode in the settings menu, that when set to high, seemed to dramatically increase the amount of regen available. Near the end of the trip, at 55 mph, while holding down the regen paddle, I saw ~234 kW going back into the battery in "D". I didn't have time to experiment further but it felt like I practically slammed on the brakes. I'm used to one-pedal from other vehicles and this was stronger than anything I've felt before.
It seems like Supercruise drops out when the truck loses cell coverage. It dropped out in the same spot on my loop in the first and second legs. Attempting to reenable it right away apparently locked me out of using it again, not sure if it was just the rest of the drive or what. Automatic lane changes worked pretty well except for the spot where it needed a lane change around a sharp corner, it opted to slow down. When I initiated the change it didn't complete the change and ended up just driving down the middle of two lanes.
53.5 mile loop on I-75.
Speed | 1st leg | 2nd leg | Avg wh/mi | Heater cons. |
80 | 1050 wh/mi | 1003 wh/mi | 1026 wh/mi | 1.3 kWh |
75 | 956 wh/mi | 890 wh/mi | 924 wh/mi | 1 kWh |
70 | 871 wh/mi | 785 wh/mi | 829 wh/mi | 0.80 kWh |
These are all numbers derived directly out of the BECM. Quite a bit of headwind on the northward part of the trip. Temperature stayed between 27 F and 29 F the entire test. 80 mph loop was in the dark, so the heater consumption might be just a little bit swayed because of that, but really doesn't seem like by much. Started at 95% charge and ended at 21%. For the entire trip, Energy Display says 173.8 miles driven and 160 kWh consumption.
Some observations:
My assumption about low efficiency vehicles having less of a penalty for heating in the winter time seems to be true.
BECM estimated total battery capacity was 217.26 kWh at the start of the trip, 214.90 kWh at the end. Probably still need more miles for it to settle on actual capacity.
BECM seems to keeps track of energy recaptured during the charge cycle but I don't see it displayed on the car anywhere. The value given is 10.6 km. Not sure if that's amount of miles recovered or the amount of distance covered while under regen.
There is an actual "One Pedal Driving" mode in the settings menu, that when set to high, seemed to dramatically increase the amount of regen available. Near the end of the trip, at 55 mph, while holding down the regen paddle, I saw ~234 kW going back into the battery in "D". I didn't have time to experiment further but it felt like I practically slammed on the brakes. I'm used to one-pedal from other vehicles and this was stronger than anything I've felt before.
It seems like Supercruise drops out when the truck loses cell coverage. It dropped out in the same spot on my loop in the first and second legs. Attempting to reenable it right away apparently locked me out of using it again, not sure if it was just the rest of the drive or what. Automatic lane changes worked pretty well except for the spot where it needed a lane change around a sharp corner, it opted to slow down. When I initiated the change it didn't complete the change and ended up just driving down the middle of two lanes.