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 transport budgets in South Africa requires transforming abstract fuel pump figures into real-world trip costs. Whether you are a daily commuter trying to budget for the month or a small business fleet manager auditing delivery routes, knowing exactly how much you spend per kilometre is essential.
This page features an interactive Litres per 100km Calculator designed specifically for South African motorists. Use it to quickly turn the latest official fuel prices into precise cost projections for your specific vehicle and driving distance.
Litres per 100km Calculator Tool
Below is the operational template interface for the calculator. Input your trip metrics to view your estimated total fuel cost and cost per kilometre.
| Field Input | Value / Selection | Unit / Notes |
| Driving Distance | [ E.g., 500 ] | Kilometres (km) |
| Fuel Consumption Rate | [ E.g., 7.5 ] | Litres per 100 kilometres (L/100km) |
| Fuel Type / Grade | Petrol 95 / Petrol 93 / Diesel 50ppm / Diesel 500ppm | Dropdown menu selection |
| Pricing Zone | Inland / Coastal | Select based on your location |
| Usage Period | Single Trip / Weekly / Monthly | Select for recurring spend data |
| Current Fuel Price | Automatically populated based on active zone | Shown in R/l (Rand per litre) |
Note on Calculator Outputs: All calculation outputs provided by this tool are strictly estimates to help you compare scenarios. Actual fuel consumption varies based on driving behavior, traffic conditions, vehicle maintenance, and actual road topography.
Enter Your Distance, Consumption and Fuel Price
To get the most accurate estimate out of the litres per 100km calculator, you need three core inputs: your total travel distance, your vehicle’s average fuel consumption rate, and the exact price you pay at the pump.
While individual vehicle fuel consumption rates can be found on your dashboard display or in the manufacturer’s manual, fuel prices fluctuate monthly based on regulatory changes.
To help you run highly realistic calculations right now, our tool references the official regulated fuel price framework determined by the Department of Mineral and Petroleum Resources (DMPR).
Current Fuel-Price Assumptions
The calculator references the official South African fuel prices effective from 2 September 2026. Prices are split across geography due to regulatory inland transport costs, and diesel rates are listed as national wholesale baselines (retail station pump prices will vary slightly).
Official Price Schedule (Effective 2 September 2026)
- Petrol 95 Unleaded (Inland): R26.92 per litre (2692 c/l)
- Petrol 95 Unleaded (Coastal): R26.05 per litre (2605 c/l)
- Petrol 93 Unleaded (Inland): R26.76 per litre (2676 c/l)
- Petrol 93 Unleaded (Coastal): R25.97 per litre (2597 c/l)
- Diesel 0.005% / 50ppm (Inland Wholesale): R29.56 per litre (2956 c/l)
- Diesel 0.005% / 50ppm (Coastal Wholesale): R28.68 per litre (2868 c/l)
- Diesel 0.05% / 500ppm (Inland Wholesale): R29.11 per litre (2911 c/l)
- Diesel 0.05% / 500ppm (Coastal Wholesale): R28.24 per litre (2824 c/l)
To view real-time changes or check impending monthly adjustments, visit our dedicated petrol price today tracking page.
Worked Example
Let’s look at a practical South African example to see how a typical commute translates to hard currency.
Imagine you live inland (Gauteng) and drive a modern compact SUV filled with Petrol 95 Unleaded (priced at R26.92 per litre). Your vehicle has a manufacturer-rated fuel consumption of 8.0 litres per 100km. You want to calculate the cost of a return holiday trip from Johannesburg to Durban, covering a total distance of 1,200 kilometres.
Step 1: Calculate Total Litres Required
$$\text{Total Litres} = \left( \frac{1,200 \text{ km}}{100} \right) \times 8.0 \text{ L/100km} = 12 \times 8.0 = 96 \text{ Litres}$$
Step 2: Calculate Total Financial Cost
$$\text{Total Cost} = 96 \text{ Litres} \times \text{R26.92/L} = \text{R2,505.60}$$
Using these inputs, the trip will cost an estimated R2,505.60 in fuel, which equates to roughly R2.09 per kilometredriven.
How the Calculation Works
The system operates on standard mathematical proportions to convert a metric consumption rate (litres used per fixed unit of distance) into a specific cash requirement for a customized journey distance.
The Formula Used
The calculator uses two simple equations sequentially to establish your results:
$$\text{Fuel Needed (Litres)} = \left( \frac{\text{Distance (km)}}{100} \right) \times \text{Consumption Rate (L/100km)}$$
$$\text{Trip Fuel Cost (ZAR)} = \text{Fuel Needed (Litres)} \times \text{Fuel Price per Litre (R/l)}$$
By applying this structure, you can seamlessly scale your calculations down to a short weekend grocery run or scale them up to a comprehensive monthly operational budget.
Related Calculators and Price Pages
To avoid duplication of tools on this page, specific alternative calculations should be performed using our adjacent canonical modules. If you need to map out your overall monthly efficiency metrics or track macro-economic shifts, check the resources below:
- Fuel Consumption Calculator: If you already know how many litres you pumped and how many kilometres you drove, use this tool to discover your vehicle’s actual average L/100km efficiency rating.
- Fuel Calculators South Africa: Our centralized commercial cluster hub containing tools for travel allowance claims, rideshare split-billing, and company vehicle cost management.
Frequently Asked Questions
What inputs does the litres per 100km calculator need?
To deliver an accurate cost estimation, the tool requires your total travel distance in kilometres, your car’s average consumption rate in L/100km, the specific fuel type or grade your car requires, and your geographic pricing zone (Inland vs Coastal) to match against current fuel prices.
Are calculator results exact?
No. The calculator provides mathematical estimates based on stable inputs. Real-world fuel economy fluctuates based on driving style (e.g., aggressive acceleration), heavy traffic congestion, vehicle load, tire pressure, and usage of the vehicle’s air conditioning system.
Should inland and coastal prices be included?
Yes. South Africa sets separate official fuel pricing structures for coastal and inland zones to account for the costs of transporting fuel via pipelines and rail from ports to the interior. Because inland prices are higher, your geographical selection significantly impacts your final trip cost estimate.
How can users reduce fuel costs?
Motorists can actively lower their fuel spend by adopting smooth driving habits, removing excess weight from the vehicle, ensuring regular servicing, planning journeys to avoid peak traffic times, and comparing model efficiency metrics on our parent fuel calculation pages.