Published: 15 July 2026
Most South African fleet operators know their fuel costs down to the last cent. They can tell you exactly what they spent on diesel last month. But ask them about their true fleet cost per kilometre South Africa-wide, and you will get a number that misses R350,000 or more per truck per year.
That is not an exaggeration. When you add up depreciation, insurance, licensing, tolls, tyres, driver costs, and the dozens of smaller line items that slip through the cracks, the average long-haul truck in South Africa costs between R18 and R28 per kilometre to operate. Most operators only track R12 to R16 of that.
The gap is not just an accounting problem. It is the difference between quoting profitable rates and losing money on every load. Between knowing which vehicles to replace and running trucks that drain your margins. Between making informed decisions and flying blind.
What Is the Average Cost Per Km for Trucks in South Africa?
The honest answer is that it depends, but here are the benchmarks SA operators should know for 2026.
Long-haul trucks (30-34 ton combinations):
- Fuel: R6.50 to R8.50 per km
- Total operating cost: R18 to R28 per km
Rigid trucks (8-16 ton):
- Fuel: R3.50 to R5.50 per km
- Total operating cost: R12 to R18 per km
Light commercial vehicles (bakkies and vans):
- Fuel: R1.80 to R3.00 per km
- Total operating cost: R5 to R9 per km
These figures come from operators running fleets on the N3 between Durban and Johannesburg, the N1 to Cape Town, and cross-border routes into neighbouring countries. Your numbers will vary based on routes, loads, driver behaviour, and vehicle age.
The critical point is this: fuel typically accounts for only 35% to 45% of total operating cost. If you are only tracking fuel, you are missing more than half of what it actually costs to move freight.
How to Calculate Fleet Cost Per Kilometre SA
Calculating true cost per kilometre requires capturing every expense category. Here is the complete breakdown:
Fixed Costs (Monthly)
- Vehicle finance or lease payments
- Insurance premiums
- Licence and registration fees
- RTMS compliance costs
- Tracking and telematics subscriptions
- Parking and depot fees
Variable Costs (Per Kilometre)
- Fuel (diesel at current prices)
- Tolls (SANRAL e-toll and N3TC)
- Tyres (cost per km based on lifespan)
- Maintenance and repairs
- Oil and lubricants
- AdBlue
Driver Costs (Often Overlooked)
- Basic salary and overtime
- Allowances (meal, sleepover, border)
- UIF, SDL, and COIDA contributions
- Training and licensing costs
- Bonuses and incentives
Administrative Costs (Hidden)
- Fleet administration staff time
- Compliance documentation
- Accident management
- Roadside assistance fees
- Traffic fines
The formula is straightforward:
Total Cost Per Km = (Monthly Fixed Costs / Monthly Kilometres) + Variable Costs Per Km
The challenge is not the maths. It is capturing accurate data across all categories. This is where most SA operators fail, not because they cannot do arithmetic, but because their data lives in spreadsheets, paper files, and different software systems that do not talk to each other.
Take Action
List every expense category above and identify where each one is tracked in your business. If any category lives only in someone's head or a paper filing system, that is where your cost visibility breaks down.
The Six Cost Lines SA Fleet Operators Miss
Based on working with transport operators across South Africa, here are the expense categories that consistently slip through the cracks:
1. True Tyre Costs
Most operators track tyre purchases but not tyre cost per kilometre. A premium tyre that costs R8,500 but lasts 120,000 km (R0.071 per km) is cheaper than a budget tyre at R5,200 that only lasts 60,000 km (R0.087 per km).
Factor in retread cycles, rotation costs, and blowout damage, and tyre management becomes one of your most controllable costs. Our guide on ADT tyre cost reduction shows how mining operators have dropped tyre costs from R127 per km to R89 per km through proper tracking.
2. Depreciation Reality
Accounting depreciation and real-world depreciation are different animals. A truck that depreciates on your books at R15,000 per month might actually lose R25,000 in market value if you are running high kilometres on rough roads.
For a 34-ton truck purchased at R2.8 million with a 5-year useful life and 150,000 km per year, true depreciation is approximately R3.73 per km. Most operators either ignore this entirely or use book values that do not reflect reality.
3. Insurance and Risk Costs
Fleet insurance premiums are only part of the picture. Add in:
- Excess payments on claims
- Loss of use while vehicles are in repair
- Third-party liability costs
- Cargo loss or damage
A single accident can cost R150,000 to R500,000 once you factor in everything. Spread across your fleet's total kilometres, these events add significant cost per km that most tracking systems miss.
4. Toll Costs Across Routes
SANRAL tolls on the N3 between Durban and Johannesburg cost approximately R1,200 one way for a 34-ton combination. That is R2,400 per round trip, or roughly R4 per km on a 600 km route.
Yet most operators quote rates without accurate toll cost allocation. Our toll cost management guide covers how to track and recover these costs properly.
5. Driver Total Employment Cost
A driver earning R22,000 basic salary actually costs R28,000 to R35,000 per month once you add:
- Overtime (often 30% to 50% of basic)
- Meal and sleepover allowances
- UIF (1% employer contribution)
- SDL (1% of payroll)
- COIDA (varies by industry)
- Medical aid contributions
- Training and licence renewals
If that driver covers 12,000 km per month, the true driver cost is R2.30 to R2.90 per km, not the R1.80 that basic salary alone suggests.
6. Maintenance Beyond Scheduled Service
Scheduled maintenance is predictable. Unscheduled repairs are not. The average SA fleet experiences unplanned maintenance costs equal to 60% to 80% of planned maintenance spend.
A breakdown on the N3 near Van Reenen Pass does not just cost R25,000 in parts and labour. It costs:
- Tow truck fees (R15,000 to R30,000)
- Driver standby time
- Missed delivery penalties
- Customer relationship damage
- Vehicle off-road time
Our analysis of fleet breakdown costs in SA mining operations shows the true impact of unplanned downtime.
Fleet Operating Cost Benchmarks South Africa 2026
Knowing your costs is only useful if you can compare them to industry benchmarks. Here are the 2026 figures for SA operators:
Long-Haul Operations (N3, N1 corridors)
| Cost Category | Benchmark Per Km | Target Per Km |
|---------------|------------------|---------------|
| Fuel | R7.20 | R6.80 |
| Tyres | R0.85 | R0.70 |
| Maintenance | R1.80 | R1.40 |
| Depreciation | R3.50 | R3.00 |
| Insurance | R0.65 | R0.55 |
| Tolls | R1.20 | R1.20 |
| Driver cost | R2.40 | R2.20 |
| Admin/overhead | R0.80 | R0.60 |
| Total | R18.40 | R16.45 |
Mining Haul Operations
Mining transport operates in a different cost environment. Higher maintenance costs, lower speeds, and harsh conditions push costs to R22 to R35 per km for tipper and ADT operations. Mining transport compliance requirements add further cost that must be tracked accurately.
Distribution Fleets (Urban)
Urban delivery operations face different challenges: lower fuel efficiency, higher maintenance frequency, and more driver hours per kilometre. Expect R12 to R18 per km for rigid trucks in metropolitan areas.
Take Action
Calculate your actual cost per km for three of your most-used vehicles. Compare to the benchmarks above. If you are more than 15% above benchmark in any category, that is where to focus your cost reduction efforts.
How Visibility Changes Fleet Decisions
When you can see true cost per kilometre by vehicle, by route, and by driver, your decision-making transforms.
Vehicle Replacement Timing
Without accurate cost-per-km data, operators typically replace vehicles based on age or odometer readings. With proper tracking, you can see when a specific vehicle's operating cost crosses the threshold where replacement makes financial sense.
A 6-year-old truck running at R21 per km might still be more economical than a new truck at R19 per km once you factor in the capital outlay. Or the opposite might be true. You cannot know without accurate data.
Route Profitability
Not all routes are equal. A route that generates R22,000 per trip but costs R20,500 per trip is barely profitable. A shorter route generating R14,000 but costing R10,200 delivers better margins.
T-ERP's fleet management module tracks revenue and cost by route, showing operators which work is actually making money and which is subsidising other operations.
Driver behaviour directly affects cost per km. Harsh braking increases tyre and brake wear. Speeding increases fuel consumption. Idling wastes diesel.
The difference between your best and worst drivers can be R2 to R4 per km. Multiply that by 15,000 km per month, and you are looking at R30,000 to R60,000 per driver per month in potential savings.
Customer Rate Negotiation
When you know your true costs, you can quote rates with confidence. You can walk away from unprofitable work. You can show customers exactly why rates need to increase when diesel prices rise.
The operators who struggle are those quoting based on gut feel or competitor rates. They win work they should not have quoted for and wonder why profits are thin.
Building a Cost-Per-Kilometre Tracking System
Implementing proper cost tracking requires three components:
1. Data Capture at Source
Every cost must be captured as it occurs, not reconciled at month-end. This means:
- Fuel card integration for diesel purchases
- Telematics integration for odometer readings
- Mobile capture for maintenance and repairs
- Automated toll statements
- Payroll integration for driver costs
Manual data entry invites errors and delays. The goal is automated capture wherever possible.
2. Allocation Logic
Costs must be allocated to the right vehicle, route, or cost centre. This is where spreadsheets fall apart, as the allocation rules become too complex to manage manually.
T-ERP's ERP software for transport handles allocation automatically, assigning costs based on vehicle usage, route completion, and driver assignment.
3. Reporting and Analysis
Data without analysis is just noise. You need:
- Cost per km by vehicle (weekly and monthly)
- Cost per km by route
- Cost per km by driver
- Trend analysis over time
- Variance against budget and benchmarks
The fleet management systems that deliver value are those that surface actionable insights, not just raw data.
The R350,000 Per Truck Reality Check
Let us work through the maths on that headline figure.
A typical 34-ton truck in South Africa runs approximately 150,000 km per year. If you are tracking R16 per km but the true cost is R18.50 per km, you are missing R2.50 per km.
R2.50 x 150,000 km = R375,000 per truck per year in untracked costs.
For a fleet of 20 trucks, that is R7.5 million in costs that are not being managed, allocated, or recovered from customers.
These are not imaginary costs. They are real expenses being paid from real bank accounts. They just are not being tracked with enough granularity to manage them.
The operators who invest in proper cost-per-kilometre tracking typically find:
- 10% to 15% reduction in fuel costs through behaviour management
- 15% to 25% reduction in tyre costs through proper management
- 20% to 30% reduction in maintenance costs through preventive programmes
- 5% to 10% improvement in driver productivity
Those savings compound. A R3 per km reduction across 150,000 km per vehicle is R450,000 per truck per year. That is the difference between surviving and thriving in SA's competitive transport market.
How T-ERP Tracks Fleet Cost Per Kilometre
T-ERP was built specifically for South African transport, logistics, and mining operators who need complete cost visibility without complex implementation.
The Fleet Management module captures costs across all categories:
- Automated fuel card integration
- Telematics data import for kilometres and driver behaviour
- Maintenance scheduling and cost tracking
- Toll cost capture and allocation
- Tyre lifecycle management
- Driver cost allocation including allowances and overtime
Cost per kilometre reports are generated automatically, broken down by:
- Individual vehicle
- Route or contract
- Driver
- Cost category
- Time period
The system also integrates with T-ERP's finance modules to ensure every cost flows through to your P&L, allocated to the correct cost centre and revenue stream.
Take Action
Book a demo of T-ERP's Fleet Management module to see how cost-per-kilometre tracking works for your specific operation. The demo uses your vehicle types and routes, not generic examples.
Conclusion
Fleet cost per kilometre South Africa is not a single number. It is a complete picture of what it actually costs to move freight across SA roads, and most operators are only seeing half of it.
The key takeaways from this guide:
- Fuel is only 35% to 45% of total cost. If you are only tracking diesel, you are missing the majority of your operating expenses.
- The gap between tracked and actual costs averages R2 to R4 per km. For a truck running 150,000 km per year, that is R300,000 to R600,000 in unmanaged costs.
- Six cost categories consistently slip through the cracks: true tyre costs, real depreciation, insurance and risk, tolls, driver total employment cost, and unscheduled maintenance.
- Visibility enables decisions. When you can see cost per km by vehicle, route, and driver, you can make informed choices about replacement timing, route profitability, and customer rates.
Start by calculating your true cost per km for your three most-used vehicles. Compare to the benchmarks in this guide. The gaps you find will show you exactly where to focus.
T-ERP's Fleet Management module gives SA operators the visibility they need to track, manage, and reduce fleet costs. See how it handles cost-per-kilometre tracking for transport and mining operations - book a demo and bring your questions.
The information in this article is for general guidance only. Regulations and requirements may change - always verify current requirements with the relevant South African regulatory authority.
Frequently Asked Questions
What is the average cost per km for trucks in South Africa in 2026?
Long-haul trucks (30-34 ton combinations) typically cost between R18 and R28 per km to operate, depending on routes, loads, and vehicle age. This includes fuel (R6.50 to R8.50), maintenance, tyres, depreciation, insurance, tolls, and driver costs. Fuel alone accounts for only 35% to 45% of total operating cost.
How do I calculate fleet cost per kilometre accurately?
Add all monthly fixed costs (finance, insurance, licensing, tracking) and divide by monthly kilometres. Then add variable costs per km (fuel, tolls, tyres, maintenance). Include driver costs (total employment cost, not just basic salary) and administrative overhead. Most operators underestimate by missing depreciation, true tyre costs, and unscheduled maintenance.
What fleet operating cost benchmarks should SA operators target?
For long-haul operations in 2026, target R16 to R17 per km total cost. This breaks down as: fuel R6.80, tyres R0.70, maintenance R1.40, depreciation R3.00, insurance R0.55, tolls R1.20, driver cost R2.20, and admin R0.60. Operators above R20 per km should investigate their highest cost categories against these benchmarks.
Why does fuel-only tracking miss so much cost?
Fuel is visible because you pay for it at the pump and it appears clearly on statements. But depreciation happens silently, tyre wear accumulates gradually, and maintenance costs spike unpredictably. Driver total employment cost is often tracked in payroll systems that do not connect to fleet systems. Without integrated tracking, costs fall between systems and are never allocated per km.
How does accurate cost-per-km tracking improve profitability?
Accurate tracking enables three profit improvements: quoting rates that cover true costs plus margin, identifying which vehicles and routes lose money, and targeting cost reduction efforts where they will have most impact. Operators who implement proper tracking typically find 10% to 15% cost reduction opportunities within six months.
