Operations

Idling: your fleet’s hidden cost and how to reduce it

June 20, 2026

A diesel engine idling burns 2 to 4 litres of fuel per hour on average. In a 40-vehicle fleet idling 45 minutes a day, that adds up to tens of thousands of litres a year — and since engine hours keep climbing, maintenance costs grow right along with it.

From the driver’s seat, idling usually looks innocent: warming the cab in winter, keeping the AC on while waiting to load, not switching off because "I’ll be out in five minutes." The problem isn’t the behaviour itself — it’s that nobody sees the total.

Visibility changes the equation. A per-vehicle daily idling report, combined with waiting-time analysis at depots and loading points, reveals two things: where the operational bottleneck is, and whose habit needs to change. When fleets use this data to set targets rather than punish, the results stick — the average reduction across Turmetre customers is 31%.

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