The Clock at the Kiosk: A Fuel-Stop Time Audit for UK Van Fleets

The cost line that never reaches the invoice

A fuel purchase looks simple on a statement: litres, price per litre, total. For a UK van fleet, however, the transaction is only part of the cost. The driver who queues behind three cars, waits for a pump, walks to the kiosk, pays and then waits for a receipt has been paid throughout. That time is rarely captured in the fuel ledger, yet it is as real as the diesel itself.

The arithmetic is modest per stop and substantial per fleet. A stop that takes eleven minutes when six would suffice removes five minutes of productive capacity. Across forty vans filling twice a week for forty-eight working weeks, that is 3,840 stops and 320 lost hours a year. At a loaded driver cost of £17.50 an hour, the time alone is worth £5,600. Whether that becomes cash saved, overtime avoided or simply schedule slack recovered depends on how the fleet is run, but it is a cost either way.

This is not an argument for unsafe haste. It is an argument for measuring the forecourt properly, then removing the avoidable minutes: the queue at the wrong site, the payment method that sends every driver to the kiosk, and the shift pattern that puts the whole fleet on the road at the same peak.

What fuel-card timestamps can and cannot tell you

Fuel-card data is the natural starting point because it already records a transaction time, site and usually a pump or transaction reference. On its own, however, it shows only when the card was authorised or the sale completed. It does not show when the van arrived, how long it waited for a pump, or how long the driver spent queueing at the kiosk.

Telematics supplies the missing half. A geofence drawn around a forecourt can record when the vehicle entered and left. Matching that dwell period to the card transaction gives a usable estimate of total forecourt time. The method is not perfect: a driver may stop at the site for a legitimate rest break, or a telematics unit may report a slightly different position in dense urban sites. Treat the output as a management indicator, not a payroll clock.

A useful definition is the interval between the first telematics event inside a 150-metre forecourt area and the first movement beyond it after the transaction. Exclude stops under two minutes, which are usually passing traffic, and stops over thirty minutes, which are usually breaks or anomalies. Record the site, time of day, payment method where known, and whether a receipt was required.

Designing a two-week audit that survives scrutiny

A full-fleet audit is rarely necessary for a first pass. Select ten to fifteen vans that represent the main routes, depots and shift patterns. Run the exercise for two consecutive weeks, avoiding school holidays and the Christmas period if possible, because both distort traffic and delivery patterns.

For each stop, capture four fields: arrival time, departure time, forecourt dwell in minutes, and site. Add a fifth field for payment method if the fuel-card provider can supply it. Then group the results by site and by time band. The pattern is usually obvious within a week: one site will account for a disproportionate share of long dwells, and one time band will show a queue that is structural rather than random.

Do not rely on driver recollection alone. Ask drivers what they experience, but test it against the timestamps. A site that feels slow may simply be the one used at the busiest hour; a site that feels fast may be adding a diversion that costs more than the queue it avoids.

From data to a stop policy

The audit should produce a short policy, not a long report. A workable UK van fleet policy usually contains six points:

• Preferred sites: a list of forecourts with reliable van access, pay-at-pump facilities and a measured dwell time below the fleet average. The list should be reviewed quarterly, not treated as permanent.
• Peak avoidance: guidance on when to avoid the busiest sites, particularly the 07:30 to 09:00 and 16:30 to 18:30 windows on routes near motorway services and retail parks.
• Payment first: where the fuel card and site allow pump-start authorisation or contactless payment at the pump, drivers should use it. A kiosk visit should be the exception, not the default.
• Receipt discipline: electronic receipts or card-provider data should replace paper where possible. If a paper receipt is required for a specific cost centre, say so clearly and keep the requirement to a minimum.
• Diversion test: no site should be added to the preferred list on pump price alone. Compare total cost per fill: fuel, driver time and any route diversion.
• Exception reporting: stops that exceed a defined threshold, say fifteen minutes for a standard fill, should be flagged for review rather than punished.

The last point matters. A dwell-time policy that penalises drivers for queues they cannot control will produce bad data and worse behaviour. The aim is to distinguish an operational problem from a driver problem.

The return on preferred sites and shift timing

Suppose the audit finds an average dwell of eleven minutes across the sample, with a preferred-site average of seven minutes. Four minutes saved per stop is realistic if the main cause is queueing and kiosk payment rather than fuel volume. For forty vans filling twice a week over forty-eight weeks, that is 256 hours a year, or £4,480 at £17.50 an hour. If the fleet can also shift one fill per week out of the morning peak, the saving may be larger still, though it will show up as reduced overtime or better schedule adherence rather than a line on the fuel invoice.

There is a trade-off to state plainly. A site three miles off route may be cheaper per litre and still more expensive per fill once diversion and driver time are included. The same applies to a supermarket forecourt with a low headline price but a long kiosk queue at lunchtime. The audit exists to make that trade-off visible.

Governance and the limits of the numbers

The output should be reviewed alongside fuel price, card fees and telematics data, not in isolation. A quarterly review is usually enough. Keep the sample method consistent so that month-on-month comparisons mean something. And resist the temptation to turn a management indicator into a rigid target: a driver who abandons a safe stop to hit a dwell target is a liability, not an efficiency gain.

Forecourt time is one of the quieter costs in a van fleet because no invoice arrives for it. Once it is measured, it becomes manageable. The first step is not a new fuel contract or a new telematics platform. It is a two-week audit, a matched dataset and a short policy that tells drivers where to stop, when to stop and how to pay.