The Impact of Fuel Pricing on the Trucking Industry in Australia

For Australian trucking operators, diesel is not just a running cost. It is the variable that can make or break a freight contract, a quarter, or a business.

When diesel prices spike, the impact flows through the entire supply chain. Freight rates come under pressure, margins compress, and operators who have not built fuel cost management into their business model find themselves exposed in ways that are difficult to recover from quickly.

Understanding what drives diesel prices, how to manage exposure, and where technology and truck specification can reduce consumption is now a core competency for any serious freight operation. This guide covers all of it in practical terms for Queensland and Australian operators.

Why fuel pricing hits trucking harder than most industries

Diesel as a percentage of total operating costs

Most industries experience fuel as a relatively minor input cost. Trucking is different.

For a typical Australian heavy vehicle fleet running linehaul or regional freight, diesel represents 30 to 40 percent of total operating costs. In some configurations, particularly fleets running older equipment on long highway cycles, the proportion is higher still.

To put that in practical terms: a prime mover travelling 200,000 kilometres per year at 50 litres per 100 kilometres uses 100,000 litres of diesel annually. At $2.00 per litre, that is $200,000 in fuel for a single truck. At $2.20 per litre, the same truck costs $220,000 to fuel.

A ten-cent movement in diesel price across a fleet of ten trucks is a $100,000 annual cost movement. That has nothing to do with how well the business is run or how good the drivers are.

Why trucking cannot absorb fuel increases the way other industries can

Freight contracts in Australia are typically negotiated on fixed or semi-fixed rates, often covering six to twelve months or longer.

When diesel prices rise sharply within a contract period, operators absorb the increase until the contract is renegotiated or a fuel surcharge kicks in. Unlike a retailer who can reprice products within days, a freight operator is often locked into a rate set when fuel was materially cheaper.

This mismatch between fuel price volatility and contract pricing cycles is one of the defining financial risks of running a trucking business in Australia. The operators who manage this risk best have either built fuel surcharge clauses into every contract, invested in reducing consumption through technology and specification, or both.

What drives diesel prices in Australia?

Crude oil, the Australian dollar, and the Singapore benchmark

Australian diesel prices are driven primarily by two factors outside the control of any domestic operator: the global crude oil price and the value of the Australian dollar against the US dollar.

Crude oil is priced in US dollars. When the Australian dollar falls, the cost of imported oil rises in Australian dollar terms, even if the global crude price has not moved.

The specific benchmark that applies to Australian diesel is the Singapore Mogas 10ppm price, which reflects refining and transport costs to the Asia-Pacific region. The Australian Competition and Consumer Commission monitors and publishes diesel price data across Australian cities and regions, providing a useful reference for operators tracking price movements over time.

Domestic refinery capacity and import dependency

Australia's domestic refinery capacity has declined significantly over the past two decades. The closure of several major refineries has left the country heavily dependent on imported refined fuel.

This means Australian diesel prices are more directly exposed to global supply chain disruptions, shipping cost movements, and geopolitical events than would be the case with more domestic refining capacity.

For trucking operators, this structural reality means diesel price volatility is not a short-term problem likely to resolve itself. The factors that create price spikes are persistent features of the global energy market.

Excise, GST, and government levies

The price an operator pays at the bowser includes several government charges independent of the underlying fuel cost.

Fuel excise in Australia is indexed to the Consumer Price Index and adjusted twice yearly, meaning it increases over time regardless of crude oil prices. GST applies to the total price including excise.

For heavy vehicle operators, the fuel tax credit scheme provides a partial offset for excise paid on fuel used in heavy vehicles. This reduces the effective cost but requires accurate record-keeping to claim correctly.

How are Australian freight operators managing fuel price exposure?

Fuel surcharges: how they work and how to structure them

A fuel surcharge is an additional charge applied to freight rates that moves in line with diesel price changes. It allows operators to pass fuel cost movements through to customers without renegotiating the base rate.

An effective mechanism specifies a base diesel price at which the surcharge is zero, a reference price source such as the Australian Institute of Petroleum weekly national average, and a formula that translates price movements into a cents-per-kilometre or percentage-of-freight-rate surcharge.

Reviewing and communicating adjustments monthly keeps customers informed and reduces the risk of disputes when prices move sharply.

The most common failure in fuel surcharge management is not having the mechanism in place before a price spike occurs. Introducing a surcharge during a period of rapidly rising prices is a much harder conversation than establishing it at the start of a relationship when conditions are stable.

Bulk fuel purchasing, on-site storage, and fuel cards

For fleets running from a fixed depot, bulk fuel purchasing and on-site storage offer meaningful cost advantages over retail bowser pricing. Bulk diesel is typically available at a discount to retail, and on-site storage removes the time cost of drivers diverting to service stations during a run.

The capital investment in storage infrastructure is generally recovered within two to three years for fleets consuming more than 500,000 litres annually.

Fuel cards provide a middle option for fleets that cannot justify on-site storage. Major networks offer volume-based discounts, consolidated invoicing, and transaction-level data that integrates with fleet management systems. That transaction data is also valuable for monitoring consumption by vehicle and driver.

Hedging and forward contracts for larger fleets

Larger fleet operators have access to fuel price hedging instruments that allow them to lock in a diesel price for a forward period, typically three to twelve months, protecting against price spikes during that window.

Hedging does not reduce fuel consumption but it does reduce price volatility exposure, which simplifies financial planning and protects margins on fixed-rate contracts.

For most small to medium fleets, the complexity and cost of formal hedging outweighs the benefit. The focus is better placed on surcharge mechanisms and consumption reduction.

How much can technology actually save on fuel costs?

Telematics, driver behaviour scoring, and route optimisation

The most accessible and consistently effective fuel-saving technology available today is telematics combined with driver behaviour monitoring.

Fleets that have implemented structured driver behaviour programmes consistently report fuel savings of 8 to 15 percent across the fleet within the first twelve months. The data identifies excessive idling, harsh acceleration, speeding, and suboptimal gear selection, and gives fleet managers the specific information needed to have meaningful coaching conversations with drivers.

PACCAR Connect provides Kenworth and DAF operators with native telematics data drawn directly from the vehicle's onboard systems. This covers fuel consumption by trip, driver behaviour events, idle time, and route history, giving fleet managers a clear picture of where fuel is being wasted.

Route optimisation contributes additional savings by reducing total kilometres travelled and avoiding conditions that increase consumption. For fleets running multiple drops on regional routes, optimised routing can reduce total kilometres by 10 to 20 percent, with a direct reduction in fuel spend.

Idle reduction: small change, large savings

Excessive engine idling is one of the most consistently overlooked sources of fuel waste in a heavy vehicle fleet.

A diesel prime mover idling consumes approximately three to four litres per hour. A driver who idles for two hours per day across a 250-day working year consumes 1,500 to 2,000 litres doing nothing productive. Across a fleet of ten trucks, that is up to 20,000 litres annually, worth $40,000 or more at current diesel prices.

Idle reduction programmes combine telematics monitoring with clear driver policies around maximum idle time. Contract maintenance programmes that keep engine cooling systems and cab climate equipment in good condition also reduce the legitimate need for extended idling.

Fuel saving strategies: estimated savings and investment required

Truck specification and fuel efficiency: the long-term view

Modern engine technology and aerodynamic design

The fuel efficiency gap between a modern, well-specified prime mover and a truck that is ten or more years old is significant and growing.

Modern diesel engines with high-pressure common rail injection, advanced turbocharging, and integrated transmission management deliver substantially better fuel economy at highway speeds than older powertrains, particularly when matched to a well-designed aerodynamic cab.

DAF trucks are a strong example of how aerodynamic engineering translates into fuel savings at highway speed. The cab profile on the DAF XG is specifically designed to minimise drag on long highway runs, and the difference in fuel consumption between a high-drag and low-drag cab at 100 kilometres per hour is measurable across annual kilometres.

How the right specification reduces fuel costs over a vehicle's working life

Fuel efficiency should be a primary consideration in truck specification decisions, not an afterthought.

The upfront cost difference between a well-specified, fuel-efficient prime mover and a cheaper alternative is often recovered within two to three years through lower fuel consumption alone, particularly for high-kilometre linehaul applications.

PacLease full-service leasing offers operators access to modern, fuel-efficient equipment without the capital commitment of outright purchase. Maintenance costs are included in a fixed monthly payment, which removes variability from fleet running costs and makes budgeting more straightforward. For operators looking to reduce fuel exposure without a large upfront outlay, this model provides a structured path to newer, more efficient equipment.

What does the future of fuel pricing mean for Australian trucking?

Electric and alternative fuel trucks on the Australian horizon

Battery-electric and hydrogen fuel cell trucks are in various stages of development and early commercial deployment globally. Australian operators are beginning to see the first electric truck options enter the local market for specific applications.

For urban distribution and short-haul operations, electric trucks are becoming commercially viable for some fleets. For linehaul operations across Queensland's freight corridors, the range, charging infrastructure, and payload implications of current electric technology mean that diesel will remain the dominant fuel for the foreseeable future.

This does not mean fleet managers should ignore alternative fuels in their planning. The transition will accelerate over the coming decade, and operators who understand where their freight task aligns with emerging technology will be better positioned to make informed fleet decisions as the options mature.

Planning your fleet now for a fuel-uncertain future

The practical implication of a fuel-uncertain future is that flexibility in fleet composition and the ability to adopt new technology incrementally are valuable assets.

Locking a fleet into long-term commitments to a single fuel type without considering how the landscape may shift carries risk. Equally, chasing emerging technology before it is proven and commercially viable in the Australian context carries its own risk.

The most defensible position for most Australian freight operators right now is to invest in maximum fuel efficiency within proven diesel technology, build strong data foundations through telematics, and stay informed about alternative fuel developments without making premature commitments.

FAQs:

What is a diesel fuel surcharge and how is it calculated?

A diesel fuel surcharge is an additional charge applied to freight invoices that adjusts in line with diesel price movements, allowing operators to recover fuel cost increases without renegotiating base freight rates. It is typically calculated as a percentage of the freight rate or a cents-per-kilometre figure, referenced against a publicly available diesel price index such as the Australian Institute of Petroleum weekly national average. The surcharge increases when diesel prices rise above a nominated base price and decreases when prices fall.

How much does driver behaviour affect fuel consumption in a heavy vehicle?

Driver behaviour is one of the largest controllable influences on fuel consumption in a heavy vehicle fleet. The difference in fuel consumption between an efficient driver and a poor-performing driver operating the same truck on the same route can be 15 to 20 percent. Behaviours including harsh acceleration, excessive speeding, poor gear selection, and unnecessary idling all contribute to higher consumption. Structured coaching programmes using telematics data consistently produce fuel savings of 8 to 15 percent across a fleet within the first year.

Is it worth investing in fuel cards or bulk fuel storage for a small fleet?

For fleets of three trucks or more, fuel cards typically deliver enough volume discount and administrative savings to justify the setup. Bulk fuel storage makes financial sense from around five to ten trucks upward, depending on annual consumption and the distance drivers need to travel to access commercial fuel. Both options also improve visibility over fuel spend, which is valuable regardless of fleet size.

How do fuel prices in Australia compare to other countries for trucking operators?

Australian diesel prices sit at a moderate level internationally, lower than most of Western Europe but higher than the United States. The key difference for Australian operators is the combination of high diesel prices with long freight distances and limited route alternatives, which means fuel represents a larger proportion of total freight cost per tonne than in many comparable markets. This makes fuel efficiency investment proportionally more valuable for Australian operators than for counterparts in markets with shorter average haul distances.

Conclusion

Fuel pricing is the most significant variable cost that Australian trucking operators face, and it is one that no business can afford to manage passively.

The operators who navigate fuel price volatility most effectively are those who have built surcharge mechanisms into their contracts, invested in telematics and driver behaviour programmes, specified their trucks for fuel efficiency from the outset, and made vehicle condition a non-negotiable priority through structured maintenance.

None of these actions eliminates fuel cost exposure entirely. Together, they reduce it to a manageable level and position a fleet to remain competitive regardless of where diesel prices move next.

Brown and Hurley has been supporting Queensland's transport industry since 1946. The team works with fleet operators across the full range of fuel efficiency measures, from truck specification and PACCAR Connect telematics through to maintenance programmes that keep vehicles running at peak efficiency. Contact the Brown and Hurley fleet solutions team to discuss where your operation has the most to gain.