Battery degradation is the reason people give for not buying an electric car.
Here are the numbers.
The battery, at a glance
100%of its new capacity
Usable capacity 79 kWh, 79 kWh when new.
Used118 cycles23,560 miles on the odometer
Measured0% lost79 of 79 kWh
While parked309 milesof range lost standing still, in 47 days
Odometer 23,560.5 miPer mile 12.2¢Degradation 0%On FSD (Supervised) 95.1%As of October 11.
Measured degradation
0%
Usable capacity reads 79 kWh against an original
79 kWh at 118 cycles. Rated excellent: degradation in the low band and cycle count in the
average band for comparable cars in the region.
Warranty, the good news
The battery and drive unit are covered to 2032 or 120,000 miles,
whichever comes first, with a floor of 70% capacity retention. At 118 cycles and
0% measured loss, that floor is a long way off. The basic vehicle
warranty runs to 2028 or 50,000 miles.
79kWh
Usable capacity
118
Battery cycles
96/100
Recurrent Range Score, September 3
293Wh/mi
Real consumption
Range lost while parked
Phantom drain is the cost of owning the car on days you do not drive it. Over
47 days this pack gave up 309 miles of
range sitting still, an average of about
7 miles a day.
10/10
Miles152.0 mi
Drives24
On FSD (Supervised)98%
Efficiency95%
Idle loss9.5 mi
Charged44.1 kWh, $20.42
measured. Miles of range lost while parked, day by day, against the dashed
47 day average. The worst day is August 25, 22.7 miles. At 41.7¢ a kWh and
293 Wh a mile, 309 miles of lost
range is roughly
$37.76
of electricity. modeled.
measured invoice or sensormodeled derived, and says soPulled 2026-10-11 · VIN serial masked · no addresses
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