Every fleet owner asks the same question before signing up: "Will this actually pay for itself?" The honest answer is yes — but only if you set up the system properly and track the right metrics. Here is how to calculate the return on investment for your own fleet.
The simple ROI formula
ROI (%) = ((Annual savings − Annual system cost) ÷ Annual system cost) × 100
If your system costs TZS 3,000,000 a year and produces TZS 9,000,000 in savings, the ROI is 200%. We aim for fleets to clear 10× their system cost within twelve months.
The four big savings buckets
1. Fuel savings (typically 10–15%)
Tracking reveals idle hours, off-route trips, and aggressive driving. Each of these wastes fuel.
- Monitor idle time per vehicle
- Coach drivers on harsh acceleration
- Set up route adherence alerts
For a typical Tanzanian van running 4,000 km/month at TZS 3,200/litre, a 12% reduction is roughly TZS 130,000–180,000 per vehicle per month.
2. Labour and time savings (15–20%)
Accurate clock-in and clock-out via geofences removes overtime fraud and "ghost" hours.
- Automatic site arrival and departure logs
- Reduced dispatcher phone calls
- Fewer disputes over overtime
3. Maintenance savings (10–15%)
Engine-hours tracking means service is done when needed, not too early and not too late.
- Service reminders by mileage and engine hours
- Diagnostic codes captured automatically
- Longer vehicle lifespan
4. Insurance and theft savings
Many insurers offer 5–15% premium discounts for active GPS fleets, and recovery rates for tracked vehicles are dramatically higher than for untracked ones.
A worked example: 20-vehicle delivery fleet
| Item | Annual amount (TZS) | |------|---------------------:| | System cost (20 vehicles × 30,000/month) | 7,200,000 | | Fuel savings | 36,000,000 | | Labour savings | 18,000,000 | | Maintenance savings | 6,000,000 | | Insurance savings | 2,400,000 | | Net annual savings | 55,200,000 | | ROI | ~767% |
Most fleets see a payback period under three months. The gap between fleets that "have a tracker" and fleets that use the tracker is enormous — discipline around weekly reports is what unlocks the savings.
Want us to run these numbers for your fleet? Book a 30-minute call and we will share a personalised ROI estimate based on your vehicle mix and routes.