A company car program looks controllable on paper. You lease the vehicles, issue the fuel cards, and forecast an annual budget based on historical driving data. When fuel prices are stable, that forecast holds up. When pump prices spike unexpectedly, the illusion of control breaks down.
The problem is not just that fuel costs more. The problem is that fuel volatility exposes a visibility gap that has always existed in your program. You see total fuel card spend going up, but you lack the mechanism to prove why.
Right now, operations leaders are watching their fuel budgets inflate. They cannot separate a necessary business expense from personal weekend driving. This post explains how volatile fuel prices expose the hidden costs of company cars, why fuel card misuse increases when prices rise, and how you can regain control of your employee driving program.
Key Takeaways
- Fuel volatility doesn’t just raise costs — it exposes a visibility gap that has always existed in company car programs: you can see total fuel card spend, but you can’t prove how much of it was actual business driving.
- Employee fuel card misuse increases when pump prices spike. Employees use the company card to offset their own rising personal costs — often not as outright theft, but as rationalization.
- Fuel is only one piece. Vehicle acquisition costs have risen roughly $10,000 over five years. Commercial auto insurance has nearly doubled since 2015. Fuel volatility sits on top of a total cost of ownership problem that was already escalating.
- With a company car, you own the depreciation. You own the liability — 24/7 insurance exposure, accident costs, and maintenance — and when fuel spikes, that bill is yours too. For standard passenger vehicle roles, that’s an increasingly hard case to make.
- Shifting to a personal vehicle reimbursement model eliminates fuel card exposure entirely. Employees are reimbursed only for verified, GPS-backed business miles, but personal driving stays their expense. For many organizations, FAVR is the most structured and cost-effective way to make that shift.
- Motus data shows FAVR saves approximately 35% compared to fleet for eligible drivers, not counting the elimination of fuel card waste.
Why company car programs don’t separate business and personal driving costs
When you issue a corporate fuel card, you authorize payment for the tank. You do not authorize the specific business miles driven. This creates a fundamental disconnect between what you pay for and what your business actually needs.
The visibility gap is the space between the fuel bill you receive and the business activity that generated it. Under normal economic conditions, many organizations don’t realize the gap is there as it’s hidden in the overall budget and easy to overlook. The cost of personal driving blends into the overall budget. When gas prices jump over a dollar in a matter of weeks, that blind spot becomes incredibly expensive.
You see the total spend rise. You cannot prove what portion of that increase belongs to actual business driving versus personal use. Without a system to track verified business miles, you’re forced to pay the invoice and hope the driving was necessary.
When you cannot separate business driving from personal driving, you pay for both. As prices climb at the pump, absorbing the cost of personal employee travel quickly destabilizes your operating budget.
How high gas prices change driver behavior
Fuel price spikes tend to drive a predictable shift in employee behavior — including increased mileage padding and fuel card misuse.
Employees feel the pinch of inflation in their daily lives. If they feel under-reimbursed or financially stressed in other areas, the corporate fuel card becomes a convenient pressure valve. A field representative might use the company car to run weekend errands. A regional manager might use the company fuel card to top off their spouse’s vehicle. It’s not always malicious theft. It’s often a rationalization by an employee trying to offset their own rising costs.
Here is the consequence: each personal fill-up is charged to the company at the newly inflated fuel price. Small personal trips across a large workforce compound rapidly. A hundred employees adding just one personal tank of gas a month can add tens of thousands of dollars in wasted spend over a quarter.
Furthermore, behavioral changes tend to stick. When fuel prices eventually normalize, the habit of using the company card for personal expenses remains. If you do not have a system to catch it now, you will continue paying for it later.
The hidden costs of company car ownership
Fuel is highly visible, but it’s only one piece of the picture. High fuel prices intensify the total cost of ownership (TCO) crisis that fleet managers have been battling for years.
- Fuel is the most visible line item, but it’s only one piece of the picture. The real challenge with company car programs is the costs you don’t see coming — and can’t easily control.
- When employees drive a company-owned vehicle, the business absorbs every associated cost. Beyond fuel, those include:
- Idle vehicles that depreciate whether they’re driven or not.
- Accidents and downtime that pull drivers off the road and trigger insurance claims.
- Deferred maintenance — employees tend to be less attentive to upkeep on an asset they don’t own.
- Vehicle purchase prices have increased by approximately $10,000 over the last five years.
- Commercial auto insurance premiums have nearly doubled since 2015.
- Maintenance and repair costs continue to outpace standard inflation due to complex vehicle technology and supply chain constraints.
Fuel volatility sits directly on top of these escalating expenses. When you combine $40,000 acquisition costs, spiking insurance rates, and unpredictable fuel bills, the traditional company car model becomes increasingly hard to justify for standard field representatives.
If your drivers do not require specialized equipment or heavy-duty trucks, providing a company car means you’re taking on maximum financial liability for a standard passenger vehicle. You own the depreciation. You own the risk. And right now, you own the inflated fuel bill.
How reimbursing for personal vehicles increases fuel expense accuracy
You cannot control global oil markets, but you can control whether your program is built to absorb unnecessary cost. Company cars and fuel cards do exactly that. If you’re still relying on them, you’re funding expenses you can’t fully verify.
This isn’t a policy problem. It’s a model problem. And it requires a model shift.
The move is straightforward in concept: instead of providing a company-owned vehicle and a blank-check fuel card, you reimburse employees for using their personal vehicles for work — and you verify every business mile with GPS-backed mileage capture. The system automatically records the exact distance of a business trip. You reimburse only what was actually driven for business. There is no fuel card exposure. There is no personal use bleed. If an employee drives to the beach on Saturday, they pay for their own gas.
For many organizations making this shift, Fixed and Variable Rate (FAVR) reimbursement is the most structured and cost-effective approach. FAVR calculates payments based on local insurance rates, depreciation, and localized fuel prices — so only the fuel component adjusts when pump prices spike. The program self-corrects based on real-world data, ensuring employees are compensated fairly without the company absorbing the cost of unauthorized personal travel.
The financial impact of this visibility is massive. Motus data shows that FAVR saves approximately 35% versus fleet for eligible drivers. You eliminate the capital expenditure of the vehicle, shed the 24/7 liability exposure that comes with a company-owned asset, reduce dependence on commercial insurance at a time when premiums are still climbing, and cut out the waste of fuel card misuse.
Move beyond company cars and fuel cards
Fuel volatility is exposing a visibility gap that has always existed in your program. High prices simply make the problem too expensive to ignore. If you continue to issue fuel cards without verifying mileage, you will continue to fund personal driving at premium prices.
You have the opportunity to replace blind spending with precise, data-backed reimbursement. Understand where your budget is actually going, and stop paying for miles that do not drive your business forward.
Ready to see how a reimbursement model stacks up against your current program? Explore our Fleet-to-FAVR comparison and learn when company cars still make sense for your business.
Frequently Asked Questions
What is fuel card misuse and why does it increase when gas prices rise?
Fuel card misuse happens when employees use a company-issued fuel card for personal driving. It tends to increase during high-cost periods because employees — feeling the pinch of rising prices in their personal lives — rationalize using the corporate card as a way to offset their own costs. This isn’t always outright theft; it’s often a slow behavioral shift that compounds quickly across a large workforce and tends to persist even after fuel prices normalize.
How does fuel price volatility expose the hidden costs of a fleet program?
When fuel prices spike, total fuel card spend rises — but without GPS-verified mileage, there’s no way to separate business driving from personal use. You see the inflated invoice; you can’t prove what portion of it belongs to actual business activity. That visibility gap exists in every fleet program. High fuel prices just make it expensive enough to notice.
What is the total cost of ownership for a company car?
Total cost of ownership for a company car includes every expense the business absorbs over the life of the vehicle: acquisition, depreciation, maintenance, repairs, commercial insurance, fuel, and compliance costs. Unlike a reimbursement model where costs are tied directly to business miles driven, a company car generates expenses whether it’s being used for work or not. Vehicle acquisition prices have risen approximately $10,000 over the last five years, commercial auto insurance premiums have nearly doubled since 2015, and fuel volatility sits on top of all of it — with no mechanism to separate business use from personal. For standard passenger vehicle roles, that’s a significant financial burden with limited visibility into what’s actually driving the cost.
When does a company car make sense versus a personal vehicle reimbursement model?
Company cars tend to make the most sense for roles that require specialized vehicles or equipment — think heavy-duty trucks, vehicles with custom builds, or jobs where the employer needs direct control over the asset. For standard field roles where employees are driving personal passenger vehicles to client sites, the math typically favors reimbursement. You eliminate capital expenditure, shed 24/7 liability exposure, and only pay for verified business miles driven. For organizations considering the shift, FAVR is a common and cost-effective approach.
How does FAVR eliminate fuel card exposure?
FAVR doesn’t involve a corporate vehicle or fuel card. Employees drive their own vehicles, and reimbursements are calculated based on GPS-verified business mileage only. Critically, the program automatically adjusts the fuel component of reimbursements to reflect the prices employees are actually seeing at the pump — so when fuel costs spike, the program responds in real time rather than leaving drivers to absorb the difference. If an employee drives to the grocery store on Saturday, that’s their expense. There’s no mechanism for personal use to bleed into the business budget — and no invoice to pay that you can’t validate.
