Operators treat failed sessions as an operations metric. They are a financial one, and the arithmetic is worth doing once because it reframes every reliability decision that follows.
What one failure costs
Take a driver who arrives, attempts a session, and cannot charge. The direct loss is the session — a few hundred rupees of revenue at most. That is the smallest component.
| Component | Rough magnitude |
|---|---|
| The lost session | One session of margin |
| Support handling | 10-20 minutes of a person, sometimes a refund |
| Reduced return rate | A meaningful share of affected drivers do not come back |
| Public review | Occasional, but durable and read by others |
| Diagnosis and possible dispatch | The largest single line when it happens |
The third row dominates over any reasonable horizon. A driver who charges twice a month at your site for two years is worth many multiples of one session. Losing a share of those to a single bad experience is the actual cost of unreliability, and it does not appear anywhere in a monthly P&L.
Which failures are yours
Not all of them. A vehicle that refuses the handshake, a driver who cancels, a card that declines — these appear in the same bucket and have very different owners.
- Charger faulted or offline: yours entirely.
- Authorisation failed: usually yours — a tag not synced, a wallet balance check, a platform timeout.
- Payment declined: shared. Your flow can make it clearer, the driver’s bank makes the decision.
- Vehicle refused: rarely yours, but you still lose the driver, so it is worth understanding which models it happens with.
- Driver cancelled within seconds: usually price surprise, which is a disclosure problem.
What the number justifies
Once you can say what a failed session costs, the spending decisions get easier. Better connectivity at a site with a marginal SIM signal, replacing a hardware model with a failure rate three times the fleet average, a support process that refunds within a day rather than a week — all of these have a return you can now state.
Most operators discover that the cheapest thing they can buy is reliability, and that they have been under-investing in it because the cost of not having it was never on a line anywhere.