Company Vehicle Expense Tracking: What to Record, Who Records It, When
In a business with three vehicles, vehicle expenses are “receipts piling up in the glovebox.” At eight vehicles that system collapses — and the day it collapses nobody notices. It surfaces later as an unexplainable line on the month-end cost list.
This is about setting up expense tracking on commercial vehicles. Not the accounting side — the operational side: who records what, which link is kept, and which question it answers.
Can you answer this question?
“What did vehicle ABC-123 cost me last month?”
If you can’t, the problem isn’t that receipts aren’t collected. It’s that the receipts aren’t attached to a vehicle. Total fuel spend is known; per-vehicle spend isn’t. Which means whoever runs the fleet can’t see which vehicle is burning money — only that the total is growing.
And the only thing you can do with a growing total is say “fuel is expensive.” In most fleets there’s a significant gap between vehicles, and that gap only appears with per-vehicle records.
Six lines to keep per vehicle
| Line | What to record | Why |
|---|---|---|
| Fuel | Date, volume, amount, mileage | Without mileage, consumption can’t be calculated |
| Maintenance/repair | Date, mileage, work, parts, cost | Both cost control and the file on sale day |
| Tyres | Date, mileage, brand, cost | The big line that arrives every 25,000 miles |
| Insurance/tax | Policy number, amount, expiry date | A missed renewal turns cost into a penalty |
| Inspection | Date, result, expiry | Late means a fine plus roadside risk |
| Fines/tolls | Date, amount, which driver | Makes responsibility explicit |
The bold items aren’t accidental: mileage and expiry date. Without those two, a record is an archive, not a management tool.
Who records: in the field, not at head office
The most common design mistake: sending receipts to accounts at month end.
Three problems with that. Receipts get lost. Mileage never gets written down, because nobody remembers it at month end. And it all funnels through one person’s desk — when they’re on leave, the system stops.
The right rule: the doer keeps the record, the owner reads it. The driver buying fuel enters it there and then, on a phone — date and mileage are correct by construction. This is the vehicle-side version of the “assign an owner” principle from the business asset inventory.
Why driver-vehicle matching matters
Two questions come up constantly in a fleet, and both depend on this link:
“Who got this fine?” — If it’s recorded which vehicle was with whom on that date and time, the answer is immediate. If not, the discussion starts and usually nobody owns it.
“Why does this vehicle use more than the others?” — Is it the vehicle or the driving? Without the driver link, that distinction can’t be made.
The real payoff: cost per mile
The point of record-keeping isn’t an archive. It’s getting to one number: cost per mile, per vehicle.
Cost per mile = (fuel + maintenance + tyres + insurance + tax + depreciation)
÷ miles driven in the period
With that number, every fleet decision resolves itself: which vehicle to retire, how to price a job, which driver is pushing costs up. The full calculation is in your car’s true cost per mile.
And in most businesses the result surprises: fuel is usually about a third of total cost. A fleet manager looking only at fuel is managing a third of the picture.
Where a spreadsheet breaks
The honest line: up to three or four vehicles, a well-built sheet works. Past that, three things break at once:
- No reminders. A spreadsheet won’t tell you insurance expires; someone has to look.
- No field entry. A driver isn’t opening Excel at a petrol station.
- No document photos. Invoices and policies end up somewhere else.
Odovo closes all three: each vehicle on its own record, fuel and service entered with mileage, document photos alongside, and insurance, inspection and service dates reminded by date OR mileage — whichever comes first, with true cost per mile calculated automatically. The Business tier adds driver accounts: the team enters their own records, can’t add or delete vehicles, and you can see who logged what.
For the operational side of running a fleet see fleet maintenance tracking, and for what downtime actually costs, the true cost of an unplanned breakdown.
Note: this covers operational record-keeping. For expense treatment, VAT and depreciation, consult your accountant.
Frequently Asked Questions
Which expenses should be tracked on a company vehicle? Six lines are enough: fuel, maintenance/repair, tyres, insurance and tax, inspection, and fines or tolls. Every entry needs a date and a mileage reading — without mileage you can’t calculate consumption or cost per mile, and without dates you can’t track renewals.
At how many vehicles does a spreadsheet stop working? In practice, three or four. Past that, the absence of automatic reminders, the inability to enter from the field, and document photos having nowhere to live all compound. Beyond that point the sheet slows you down rather than helping.
Why record which driver had which vehicle? To answer two questions: who is responsible for a fine, and whether a consumption gap comes from the vehicle or the driver. Without the link, both turn into arguments and usually stay unanswered.