Ownership tool
Remaining range estimator
Enter the rated range or battery size, current charge and driving conditions to estimate how many miles are left, with a conservative-to-optimistic band.
Estimated range left
86 mi
City driving · mild weather
About 86 mi at this charge — conservative 73 mi, optimistic 98 mi.
| Estimated full-charge range | 300 mi |
|---|---|
| Charge remaining | 30% |
| Condition factor | ×0.95 · City driving · mild weather |
| Conservative – optimistic | 73 mi – 98 mi |
Using rated range × condition factor. Enter battery capacity to switch to the consumption method.
Below 10% some EVs limit power or hide the range readout — charge soon.
How it is calculated
Range left = full-charge range × state of charge × condition factor. Full range is the rated figure, or capacity ÷ consumption × 100 when a pack size is entered.
The factor discounts the EPA rating toward real conditions: mild city ~0.95, highway ~0.75, cold highway ~0.55. Pick “no adjustment” when the entered range or consumption is already measured.
The conservative–optimistic band is ±15% of the estimate, covering vehicle, temperature and driving-style spread.
How to fill each field
- Rated rangeUse the EPA rating or the dash figure at a full charge. EPA ratings run higher than real-world, which is what the factor corrects; choose “no adjustment” for measured values.
- Capacity and consumptionEither/or with rated range. Enter usable kWh and a measured kWh/100 mi figure to make the result independent of the rating.
- ConditionsHighway assumes a steady 65–75mph; cold means below freezing with cabin heat. Long grades, full loads and heavy rain need extra margin.
FAQ
How far can 30% charge really take me?
A 300-mile EPA rating at the city factor gives about 86 miles at 30%; on the highway factor about 68 miles, and cold-weather highway about 50 miles. Keep a 10–15% buffer before planning a stop.
Why does the rated range get discounted?
EPA figures come from a controlled cycle — real city driving is usually 5–10% under, highway 20–30% under, and cold snaps can cut a third or more. Pick “no adjustment” for measured figures.
How is the capacity-based estimate different?
Range left = battery kWh × charge % ÷ consumption × 100 × factor. A 75kWh pack at 30% and 30 kWh/100 mi gives 75 miles before the factor — useful when you have real consumption data.
What's the most efficient way to stretch the last miles?
A steady 55–65mph uses 15–20% less than 75mph; cabin heat costs more than A/C, while seat heaters cost less; low tire pressure adds measurable drag.
Why did my range estimate suddenly drop?
The guess-o-meter recalculates from recent consumption, so it drops after a highway stint or a cold start. Watch the state-of-charge percentage instead and keep a 10%+ arrival buffer.