Tow segment data · Day 12

St. Robert MO Tesla SC Wally's Fenton IONNA

This 113.8-mile tow leg from St. Robert MO Tesla SC to Wally's Fenton IONNA on Day 12 averaged 1.04 mi/kWh, -16% the 1.23 mi/kWh ledger average, dropping about 638 ft net, into 25 mph of strong headwind penalty, around 80°F. That works out to a full-pack tow pace of about 147 miles on the 141 kWh pack, ranking #38 of 47 logged legs by efficiency.

1.04 mi/kWh towing

147 mi full-pack pace

-16% vs ledger average

#38 of 47 by efficiency

Efficiency 1.04 mi/kWh -16% vs 1.23 mi/kWh ledger average

Range pace -27 mi against the current full-pack tow average

Grade -5.6 ft/mi 2,440 ft climbed

Wind strong headwind penalty 25 mph ESE

Temperature mild temperature 80°F avg, 70-88°F

Elevation profile

The road shape behind the number.

Start 1,081 ft Peak 1,177 ft End 443 ft 113.8 mi, a net descent

Raw data

The data points

Distance: 113.8 mi
Energy used: 109 kWh from the pack
Efficiency: 1.04 mi/kWh
Consumption: 962 Wh/mi
Expected range: 147 mi on a 141 kWh pack
Net elevation: -638 ft descent
Total climbed: 2,440 ft up
Total descended: 3,080 ft down
Peak elevation: 1,177 ft
Average grade: -6 ft/mi
Wind: 25 mph ESE Wind direction worked against the trailer and likely pulled efficiency down. ↓ strong headwind penalty
Temperature: 80 °F avg 70-88°F mild temperature

Dashboard at arrival

The Rivian center-display readout when we rolled into Wally's Fenton IONNA . Point-in-time instrument values, the kind of telemetry that goes continuous once we start logging OBD-II.

Pack temp: 133 °F
Ambient air: 83 °F

Why it ran this way

The longest leg of the day, 687 ft of net descent toward the Mississippi but a quartering ESE headwind held it to 1.04 mi/kWh, 109 kWh. Wind direction beat elevation again.