The Real Cost Per Vehicle: Why Most Fleet Managers Don't Know Theirs

Ask most fleet managers what their vehicles cost to run and you will get a number for fuel. Maybe a rough figure for servicing. Possibly an estimate on insurance. But a genuine, all-in cost per vehicle that accounts for every pound spent keeping that asset on the road? Very few can produce one. And without that number, you are making replacement decisions, budgeting, and pricing your services based on incomplete information.

The true cost of running a fleet vehicle breaks down into several categories, and most operators are only tracking two or three of them. Fuel is the obvious one. It is visible, frequent, and easy to measure. Servicing, maintenance, and repair, known as SMR, is the second cost most operators have a handle on, though often only at the fleet level rather than per vehicle. Beyond those two, the picture gets blurry quickly.

Vehicle Excise Duty is a fixed annual cost that varies by vehicle and emission band. Insurance premiums need to be allocated per vehicle, which is straightforward for individually rated policies but requires estimation for fleet policies. MOT costs are modest individually but add up across the fleet and need to include the cost of any remedial work required to pass. Tyres are a significant and often underestimated cost, particularly for vehicles covering high mileage or operating on poor road surfaces. Depreciation or lease payments represent the cost of the asset itself, and for owned vehicles, calculating real-world depreciation rather than book depreciation gives a far more accurate picture.

Then there are the costs that almost nobody tracks: administration time. How many hours per month does your team spend managing each vehicle? Processing fuel receipts, booking services, chasing MOT appointments, filing insurance documents, updating spreadsheets. For a fleet without proper management software, this figure is often shockingly high. At a loaded cost of twenty-five to thirty-five pounds per hour, even two hours per vehicle per month adds up to a meaningful sum across the fleet.

Downtime is another hidden cost. When a vehicle is off the road for repair or compliance work, the jobs it was scheduled to complete still need doing. That might mean a hire vehicle, overtime for another driver, or a lost job. The direct cost of the repair is on the invoice. The indirect cost of the downtime rarely appears in any report but can be two to three times larger.

When you bring all of these costs together at the individual vehicle level, the results are almost always surprising. Most fleets have a small number of vehicles that cost significantly more per mile than the average. These are typically older vehicles that have passed the sweet spot of their lifecycle. Their maintenance costs are climbing, their fuel efficiency is declining, and their reliability is falling. But because nobody has aggregated all the costs in one place, these vehicles continue in service while newer, more efficient alternatives sit in a procurement queue.

Calculating cost per mile is the most useful way to compare vehicles across a fleet. Total all costs for the vehicle over a period, typically twelve months, and divide by the miles covered. For most UK van fleets, the figure falls between forty and seventy-five pence per mile. Vehicles significantly above the fleet average deserve scrutiny. Is it age? Mileage profile? A specific mechanical issue? Driver behaviour? The diagnosis often leads to an action that saves money immediately, whether that is bringing forward a replacement, changing a maintenance approach, or reallocating the vehicle to a different role.

Kedra's cost tracking captures fuel, SMR, tyres, insurance, tax, and any other cost against the individual vehicle record. The platform calculates cost per mile automatically and highlights outliers. When you can see, at a glance, which vehicles are costing you the most and why, you stop guessing and start making decisions based on data. That is the difference between managing costs and just paying bills.