WEX Launches New Index Highlighting How Commercial Fleets Managed the 2026 Fuel Price Surge
WEX a global provider of intelligent payment solutions, has introduced the WEX Index®: The Fleet and Mobility Spend Report, a new industry analysis designed to help commercial fleet operators understand spending patterns, evaluate fuel purchasing decisions, and identify opportunities to improve operational efficiency.
The report combines WEX’s proprietary transaction data with the company’s experience in fleet payments and mobility solutions. It examines how commercial fleets across the United States and North America responded to the significant increase in fuel prices during 2026. Covering the period from January through September 2026, the report provides insights into fuel purchasing behavior, spending trends, vehicle energy choices, and emerging risks affecting fleet operations.
The launch comes at a challenging time for the commercial transportation industry. Rising fuel prices have increased operating expenses for businesses that depend on vehicles to deliver products, transport employees, provide services, and maintain supply chains. While fleet operators have limited control over fuel market prices, they can influence several factors that determine how much they spend on fuel.
According to WEX transaction data, average U.S. fuel prices increased approximately 43% in the third quarter of 2026 compared with the same period a year earlier. The average price climbed from $3.38 per gallon to $4.85 per gallon. Despite this substantial increase, the volume of fuel purchased by commercial fleets remained essentially unchanged.
This finding demonstrates the difficulty fleet operators face when fuel prices rise sharply. Businesses cannot always reduce fuel consumption without affecting their operations. Delivery schedules, customer commitments, transportation requirements, and service obligations often require vehicles to remain active regardless of market conditions.
The WEX Index provides fleet managers with a clearer understanding of these challenges and highlights practical areas where they can improve purchasing decisions without compromising business operations.
Understanding the Impact of Rising Fuel Prices on Commercial Fleets
Fuel represents one of the most significant operating expenses for many commercial fleet businesses. Companies operating delivery vans, trucks, service vehicles, and other transportation assets must manage fuel expenses carefully to maintain profitability.
The 2026 fuel price increase placed additional pressure on fleet budgets. With average fuel prices rising by approximately 43% year over year in the third quarter, businesses had to absorb considerably higher costs while maintaining nearly the same fuel consumption levels.
The WEX report indicates that commercial fleets continued purchasing fuel at relatively stable volumes despite the increase in prices. This suggests that many operators were unable to reduce fuel demand substantially because their vehicles remained essential to daily business activities.
For fleet managers, the challenge is therefore not simply about purchasing less fuel. It is also about identifying where drivers purchase fuel, understanding the prices they pay, monitoring purchasing patterns, and ensuring that vehicles use the appropriate fuel grade.
By analyzing real transaction information, the WEX Index establishes an industry benchmark that allows businesses to evaluate their performance against broader fleet spending trends.
Key Findings From the WEX Index
The first edition of the WEX Index highlights several important findings that could influence fleet management strategies, fuel purchasing policies, and long-term transportation investments.
1. Fuel Consumption Remained Stable Despite Higher Prices
One of the most significant findings is that fuel prices increased considerably while the number of gallons purchased remained essentially flat.
Average U.S. fuel prices rose from $3.38 per gallon to $4.85 per gallon in the third quarter of 2026 compared with the previous year. This represented an increase of approximately 43%.
However, commercial fleets continued purchasing almost the same volume of fuel.
The figures demonstrate that many businesses have limited flexibility when it comes to reducing fuel consumption. Commercial vehicles must continue operating to meet customer requirements, complete deliveries, support field services, and maintain transportation schedules.
As a result, fleet operators need to concentrate on improving fuel purchasing efficiency and controlling expenses in areas where they have greater influence.
2. Fuel Purchasing Locations Create Opportunities for Savings
The report found that 38.1% of North American commercial fleets paid more for fuel than the local WEX Fuel Price Index (FPI) benchmark.
This finding highlights the financial impact of fuel purchasing locations.
Fuel prices can vary significantly depending on geographic location, station, and local market conditions. Drivers who select fuel stations without considering local price differences may unintentionally increase their company’s operating expenses.
For businesses with large vehicle fleets, even small price differences can create substantial costs over time.
The WEX Fuel Price Index provides a reference point that allows fleet managers to compare actual transaction prices with local fuel price benchmarks.
By reviewing these comparisons, companies can identify locations where drivers consistently pay more than expected. Fleet managers can then establish preferred fueling networks, communicate lower-cost alternatives, and encourage drivers to make more informed purchasing decisions.
3. Premium Fuel Purchasing Can Increase Operating Expenses
Another important finding concerns the use of premium-grade fuel.
According to the WEX analysis, premium fuel accounted for approximately 7.6% of recorded transactions. The average price difference between premium and regular fuel was approximately $0.78 per gallon.
For vehicles that do not require premium-grade gasoline, purchasing a more expensive fuel option can create unnecessary expenses.
The report estimates that fleets could potentially save up to $86.9 million if vehicles that do not require premium fuel consistently used the appropriate lower-cost grade.
This finding highlights an opportunity for businesses to review their fuel policies and vehicle requirements.
Fleet managers should understand the manufacturer’s recommended fuel specifications for each vehicle. Drivers should receive clear instructions about which fuel grades are appropriate for their assigned vehicles.
However, businesses must avoid using lower-grade fuel in vehicles that specifically require premium gasoline. The objective is to eliminate unnecessary premium purchases without compromising vehicle performance, reliability, or manufacturer requirements.
4. Cybersecurity Threats and Unusual Fuel Spending Require Attention
The WEX Index also highlights growing cybersecurity risks and unusual purchasing behavior within commercial fleets.
Industry figures included in the report indicate that phishing attacks increased by 1,265% since the fourth quarter of 2022, when generative artificial intelligence tools became widely available.
This increase demonstrates the importance of strengthening cybersecurity practices across organizations that rely on digital payment systems and connected business operations.
Fleet payment accounts, fuel cards, driver credentials, and transaction platforms can become potential targets for fraudulent activity.
Businesses should therefore implement appropriate security measures, educate employees about suspicious communications, and regularly review payment activity.
The report also found that 81.4% of fleets with five or more drivers had at least one driver whose fuel spending exceeded the fleet average.
Higher spending does not automatically indicate fraud or policy violations. Differences in routes, vehicle types, workloads, and operating conditions can influence individual fuel expenses.
Nevertheless, these variations provide a reason for fleet managers to examine transaction records more closely.
By monitoring unusual purchasing patterns, businesses can identify potential misuse, policy violations, incorrect fuel purchases, or opportunities to improve driver behavior.
5. Electric Vehicle Decisions Should Be Based on Individual Vehicle Requirements
The report also examines the potential financial benefits of replacing suitable conventional vehicles with electric vehicles.
WEX analyzed 8,798 vehicles to evaluate their suitability for electric vehicle replacement. According to the modeled results, approximately 27% of the vehicles were recommended for replacement with EVs.
The analysis estimated that each recommended replacement could generate average savings of $16,595, equivalent to approximately 15% in costs over the vehicle’s service life.
These figures suggest that electrification could offer meaningful financial advantages for certain commercial fleet operations.
However, the findings also emphasize that electric vehicle adoption should not be treated as a universal solution.
Vehicle suitability depends on several factors, including daily mileage, operating routes, charging availability, vehicle utilization, maintenance requirements, acquisition costs, and expected service life.
For example, vehicles that operate predictable routes and return to a central facility regularly may be suitable candidates for electrification. Other vehicles that travel long distances, operate in remote areas, or require specialized capabilities may need different solutions.
Fleet managers should therefore evaluate vehicles individually rather than making electrification decisions based solely on broad industry trends.
A vehicle-by-vehicle assessment can help businesses determine where electric vehicles offer the strongest financial and operational benefits.
WEX Emphasizes the Importance of Data-Driven Fleet Management
Melissa Smith, chief executive officer and president of WEX, highlighted the importance of using transaction data to make better decisions in a challenging fuel market.
She explained that although fleet operators cannot control fuel prices, they can control how they respond to changing market conditions.
According to Smith, the WEX Index provides the mobility industry with a reliable reference point based on actual transactions from commercial fleets.
The report enables businesses to compare their spending patterns with industry benchmarks, identify potential risks earlier, and make more informed decisions about fueling behavior and future energy strategies.
The company’s approach focuses on helping fleet operators move beyond simply monitoring fuel expenses. Instead, businesses can use transaction information to understand purchasing behavior and identify specific areas where operational improvements are possible.
This approach is particularly important as commercial fleets face multiple pressures, including higher energy costs, cybersecurity threats, changing vehicle technologies, and increasing expectations for operational efficiency.
Five Practices Fleets Can Use to Improve Spending Decisions
The WEX Index outlines five practical steps that commercial fleet operators can use to turn the report’s findings into measurable improvements.
1. Establish a Clear Baseline
Businesses should begin by understanding their current fuel spending, consumption levels, purchasing locations, and driver behavior.
Establishing a baseline provides a starting point for measuring future performance and identifying areas that require attention.
2. Compare Fuel Purchases With Local Benchmarks
Fleet managers should regularly compare the prices paid by drivers with local fuel price benchmarks.
This process can help identify expensive fueling locations and encourage drivers to choose more cost-effective stations.
3. Focus on Important Spending Indicators
Companies should monitor the financial and operational measurements that have the greatest influence on fleet performance.
These may include fuel prices, gallons purchased, fuel grades, individual driver spending, and unusual transaction activity.
Regular monitoring can help businesses identify inefficiencies before they become significant financial problems.
4. Evaluate Mixed-Energy Fleet Options
Businesses should assess whether conventional vehicles, hybrids, and electric vehicles are appropriate for different operational requirements.
Rather than adopting a single energy solution across the entire fleet, companies can evaluate individual vehicles and select technologies that offer the strongest combination of cost savings, performance, and reliability.
5. Review and Update the Baseline Regularly
Fuel markets, operating conditions, and vehicle technologies continue to change.
Fleet managers should revisit their performance benchmarks regularly and compare new spending patterns with previous results.
This allows businesses to understand whether their improvement initiatives are producing measurable benefits and whether additional adjustments are necessary.
WEX Plans to Expand the Index With Future Industry Reports
The newly launched WEX Index is intended to serve as the first edition in an ongoing series of fleet and mobility spending reports.
Future editions are expected to build on the initial findings and provide additional comparisons against the established baseline.
This approach could help commercial fleet operators monitor changes in their spending patterns and evaluate their performance against wider industry trends over time.
For businesses operating large transportation networks, consistent access to reliable industry benchmarks can support better budgeting, purchasing policies, and long-term fleet planning.
The report also provides an opportunity to understand how changes in fuel prices, purchasing decisions, and vehicle technologies affect the financial performance of commercial transportation operations.
WEX Partners With Bloomberg Media Studios to Share Industry Insights
To bring the findings of the WEX Index to a wider business audience, the company has also published an article in collaboration with Bloomberg Media Studios.
The article examines how commercial fleets are responding to a significant increase in fuel prices while facing limited opportunities to reduce fuel consumption.
It also explores how purchasing decisions, particularly the locations where drivers refuel and the grades of fuel they select, can create opportunities for businesses to control costs.
The collaboration highlights the importance of making informed operational decisions during periods of economic uncertainty and rising transportation expenses.
Readers can access the related article through Bloomberg’s website.
The Future of Commercial Fleet Spending
The launch of the WEX Index comes at a time when fleet operators must balance rising operating expenses with the need to maintain reliable transportation services.
The 2026 fuel price surge demonstrated that businesses cannot always reduce fuel consumption when market prices increase. However, the findings suggest that meaningful savings may still be available through improved purchasing strategies, fuel-grade management, transaction monitoring, and careful vehicle replacement decisions.
The report’s analysis of fuel purchasing locations, premium fuel transactions, cybersecurity threats, and electric vehicle suitability provides fleet managers with several areas to investigate.
As commercial transportation continues to evolve, access to reliable transaction data and industry benchmarks will become increasingly important for companies seeking to improve efficiency and manage expenses.
Through the WEX Index, WEX aims to give fleet operators a clearer picture of their spending patterns and a practical foundation for making better decisions.
By combining real-world transaction insights with regular performance reviews, commercial fleets can strengthen cost management strategies, identify unnecessary expenses, and prepare for changing mobility requirements.
Ultimately, the report reinforces an important message for the transportation industry: while businesses may have little influence over global fuel prices, they can improve how they purchase fuel, manage vehicles, monitor transactions, and plan for the future.
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