Official figures — September 2026. These are the confirmed prices published by the Department of Mineral and Petroleum Resources (DMPR), effective Wednesday, 2 September 2026. Petrol 93 and 95 both rose 134 c/l, diesel 500ppm rose 294 c/l, diesel 50ppm rose 315 c/l and illuminating paraffin rose 213 c/l. The previous official prices took effect on 5 August 2026.
Managing your monthly vehicle expenses starts with understanding exactly how much fuel your vehicle uses and what it costs you per trip. Whether you are a daily commuter, managing a small business fleet, or planning a long road trip across South Africa, this tool turns volatile fuel prices into practical cost estimates.
Use our interactive tool below to map your real-world driving costs using the latest official pricing metrics.
Fuel Consumption Calculator tool
This calculator provides immediate clarity on your travel expenses. Please note that all calculations are practical cost estimates based on your custom inputs; real-world consumption can vary slightly depending on driving style, traffic conditions, and vehicle maintenance.
Interactive Calculator Fields
+-----------------------------------------------------------+
| FUEL CONSUMPTION CALCULATOR |
+-----------------------------------------------------------+
| 1. Distance to Travel (km): [ e.g., 100 ] |
| 2. Vehicle Consumption (L/100km):[ e.g., 8.5 ] |
| 3. Select Fuel Grade / Type: [ Petrol 95 Inland v ] |
| 4. Price per Litre (R/L): [ 26.10 ] |
| 5. Optional Usage Period: [ One-off Trip v ] |
+-----------------------------------------------------------+
| [ CALCULATE FUEL COST ] |
+-----------------------------------------------------------+
| RESULTS SUMMARY: |
| * Litres Required: 8.50 L |
| * Estimated Cost: R221.85 |
+-----------------------------------------------------------+
Note on Calculator Inputs: To calculate your true costs, make sure you know your vehicle’s realistic fuel efficiency rate (measured in litres per 100km). If your vehicle displays efficiency differently, you can use our dedicated calculate km per litre tool to convert it first.
Enter your distance, consumption and fuel price
To use the tool above effectively, enter your typical commuting distance alongside your manufacturer’s or real-world efficiency figures.
If you do not have your exact price per litre on hand, the calculator uses the latest official Department of Mineral and Petroleum Resources (DMPR) monthly schedule by default. Because South Africa utilizes a regulated pricing model for petrol, rates change on the first Wednesday of every month based on international oil costs and the Rand/US Dollar exchange rate.
- Distance: Enter your daily commute, a specific planned delivery route, or an upcoming holiday distance in kilometers.
- Consumption: Input how much fuel your car uses. If you only know your total capacity, a litres per 100km calculator can help establish your baseline.
- Fuel Price: Ensure you align this with your local region (Inland vs. Coastal pricing zones) and fuel grade.
Current fuel-price assumptions
The baseline assumptions for our calculator are updated directly following every official monthly adjustment issued by the DMPR. The following official retail pump and wholesale baseline values are effective from 2 September 2026:
| Fuel Grade / Type | Inland Retail/Wholesale Price | Coastal Retail/Wholesale Price |
| Petrol 93 ULP / LRP | R26.76 per litre | R25.97 per litre |
| Petrol 95 ULP / LRP | R26.92 per litre | R26.05 per litre |
| Diesel 0.05% Sulphur (500 ppm) | R29.11 per litre (wholesale) | R28.24 per litre (wholesale) |
| Diesel 0.005% Sulphur (50 ppm) | R29.56 per litre (wholesale) | R28.68 per litre (wholesale) |
To track the daily market indicators or view upcoming projections before the next official change, visit our comprehensive petrol price today tracker page.
Worked example
Let’s look at a realistic scenario to demonstrate how localized parameters influence what you pay at the pump.
Scenario: Johannesburg to Durban Holiday Road Trip
- Total Distance (Return Trip): 1,200 km
- Vehicle Efficiency: 7.5 Litres per 100km
- Fuel Type: Petrol 95 (Inland baseline used for initial fill-up)
Step-by-Step Calculation
- Calculate Total Fuel Volume: The vehicle requires 7.5 litres for every 100km traveled. For 1,200km, the volume is:$$\text{Total Litres} = \left(\frac{1,200}{100}\right) \times 7.5 = 90 \text{ Litres}$$
- Apply Price Metric: Using the Inland Petrol 95 rate of R26.92 per litre:$$\text{Estimated Cost} = 90 \times \text{R26.92} = \text{R2,349.00}$$
This scenario illustrates a straightforward travel outline. If you want to calculate a one-way trip or alternative configurations, you can execute these variations inside the calculate fuel cost module.
How the calculation works
The core logic under the hood of our tool relies on a standard mathematical relationship between distance and fuel efficiency.
The Fuel Consumption Formula
To find out how much fuel your car uses over any distance, the calculator applies the following primary formula:
$$\text{Fuel Needed (Litres)} = \left(\frac{\text{Distance in km}}{100}\right) \times \text{Consumption (L/100km)}$$
Once the required volume is known, the financial cost is derived via:
$$\text{Total Trip Cost (ZAR)} = \text{Fuel Needed (Litres)} \times \text{Price per Litre (R/L)}$$
For a broader breakdown of technical mechanics, variations for alternative engine displacements, or how efficiency shifts under variable loads, check our in-depth guide on the fuel consumption formula. If you often find yourself wondering exactly how much petrol for 100km your utility vehicle or sedan requires, exploring these dedicated resources will help maximize your driving efficiency.
Related calculators and price pages
This tool is part of a broader network of financial resources designed for South African motorists. If you need to dive deeper into historical trends, fuel logistics, or specific edge-case cost scenarios, consider visiting our alternative modules:
- fuel calculators South Africa: Our absolute cluster hub page consolidating all available calculation tools, regional tax breakdowns, and commercial optimization options.
- petrol price today: Up-to-the-minute updates containing the Central Energy Fund (CEF) daily over- or under-recovery indicators.
Frequently asked questions
What inputs does the fuel consumption calculator need?
To deliver an accurate financial breakdown, the calculator requires your planned travel distance in kilometers, your vehicle’s average consumption rate (L/100km), the current regulated fuel price in R/l (or cents per litre), and your preferred grade selection.
Are calculator results exact?
No, the calculator results are helpful estimates. Real-world fuel consumption fluctuates constantly due to aggressive acceleration, heavy cargo loads, high-altitude terrain, and unexpected city traffic congestion.
Should inland and coastal prices be included?
Yes. Because of the transport and logistics costs associated with piping fuel from coastal ports up to the reef, inland petrol prices are structurally higher than coastal pump prices. Always use the correct regional metric for accurate trip budgeting.
How can users reduce fuel costs?
The best way to lower fuel spend is by managing your vehicle’s efficiency footprint. You can minimize cost exposure by maintaining optimal tire pressure, avoiding unnecessary vehicle weight, driving smoothly, and mapping your routes through dedicated calculation pages to find the most efficient pathways.