Utilization Calculation
Utilization measures how effectively the fleet is being rented out.
Utilization % = (Actual Rental Days / Rentable Days) x 100
Actual Rental Days
Calculated from trip timestamps — NOT from the trip_days field (which can be inaccurate):
const actualDays = trips.reduce((sum, trip) => {
const start = new Date(trip.trip_start);
const end = new Date(trip.trip_end);
const days = (end.getTime() - start.getTime()) / (1000 * 60 * 60 * 24);
return sum + Math.max(days, 0);
}, 0);
The trip_days field from Turo’s CSV sometimes reports rounded values. Always use trip_start and trip_end timestamps for accurate day calculations.
Rentable Days
The number of days a vehicle could have been rented:
Rentable Days = Days from first trip date to TODAY
Worked Example
Vehicle: 2024 Tesla Model 3
- First trip: January 1, 2026
- Today: March 10, 2026
- Rentable days: 69 days
Trips this period:
| Trip | Start | End | Days |
|---|
| Trip 1 | Jan 3 | Jan 6 | 3.0 |
| Trip 2 | Jan 10 | Jan 17 | 7.0 |
| Trip 3 | Jan 25 | Jan 28 | 3.0 |
| Trip 4 | Feb 1 | Feb 8 | 7.0 |
| Trip 5 | Feb 15 | Feb 22 | 7.0 |
| Trip 6 | Mar 1 | Mar 5 | 4.0 |
| Total | | | 31.0 days |
Utilization = (31.0 / 69) x 100 = 44.9%
Fleet-Level Utilization
For the entire fleet:
Fleet Utilization = Sum(all vehicle actual days) / Sum(all vehicle rentable days) x 100
active and at least one trip are included.
Per-Vehicle Metrics
The dashboard also calculates per-vehicle:
- Average Daily Rate = Vehicle earnings / Actual rental days
- Revenue per Rentable Day = Vehicle earnings / Rentable days
- Vehicles are ranked by earnings in the KPI dashboard
Key File
src/lib/kpi/calculations.ts (lines ~200-280) — Contains the utilization calculation logic.
