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 travel expenses in South Africa requires turning volatile pump prices into predictable numbers. Whether you are budgeting for a daily commute from Soweto to Sandton, planning a commercial logistics route, or calculating corporate travel reimbursements, knowing your exact running costs is essential.
This Cost per Kilometre Calculator simplifies the math, helping you convert official Department of Mineral and Petroleum Resources (DMPR) fuel rates into practical, real-world trip estimates.
Cost per Kilometre Calculator Tool
Use the interactive fields below to estimate your current fuel costs per kilometre. Simply enter your vehicle’s metrics and the local pump price to generate an instant estimate.
Calculator Disclaimer: This tool provides estimated fuel-only running costs based entirely on your manual inputs. Actual vehicle running costs will vary depending on real-time traffic conditions, tyre wear, individual driving habits, and routine vehicle maintenance.
Interactive Calculator Fields
- Step 1: Select Your Fuel Type & Region: (e.g., Petrol 95 Inland, Diesel 50ppm Coastal)
- Step 2: Enter Fuel Price per Litre (R/l):
[ R 26.10 ](Pre-loaded with current official default) - Step 3: Enter Average Fuel Consumption (l/100km):
[ 7.5 ] - Step 4: Enter Total Trip Distance (km):
[ 50 ](Optional for single trip breakdown) - Step 5: Enter Usage Period (Days/Months):
[ Monthly ](Optional)
Estimated Output
- Fuel Cost per Kilometre: R1.07 per km
- Total Single Trip Cost: R97.88
- Estimated Monthly Expense (20 Days): R1,957.50
Enter Your Distance, Consumption and Fuel Price
To get the most accurate results from the cost per kilometre calculator, it is vital to source realistic, location-specific inputs rather than general national averages. South African fuel pricing structures are highly regionalized, meaning the exact price you pay changes depending on your distance from the nearest ports and the specific grade of fuel your engine requires.
When inputting your parameters, prioritize these three core data points:
- Your Exact Distance (km): Use a precise GPS route planner to determine your daily commute or business trip distance.
- Verified Consumption (l/100km): Do not rely solely on factory-spec brochures. Check your vehicle’s on-board trip computer over a full week of driving to capture realistic city and highway averages.
- Local Retail Price (R/l): Ensure you are using the correct value for your zone. Petrol is strictly regulated at a fixed retail rate, while wholesale diesel prices fluctuate between individual filling stations.
Current Fuel-Price Assumptions
To ensure your cost projections match reality, the calculator uses the official monthly fuel price schedules regulated by the Department of Mineral and Petroleum Resources (DMPR).
Below are the baseline retail and wholesale values currently active across South Africa:
Official South African Fuel Prices
Effective Date: 2 September 2026 | Source: DMPR / Central Energy Fund (CEF)
| Fuel Grade & Type | Inland Region Rate (R/l) | Coastal Region Rate (R/l) |
| Petrol 95 ULP | R26.92 | R26.05 |
| Petrol 93 ULP / LRP | R26.76 | R25.97 |
| Diesel 0.05% Sulphur (Wholesale) | R29.11 | R28.24 |
| Diesel 0.005% Sulphur (Wholesale) | R29.56 | R28.68 |
Note: Diesel figures reflect baseline wholesale pricing; actual retail pump prices vary slightly by service station.
Worked Example
Let’s look at a typical South African commuting scenario to see how these numbers translate into a concrete cost-per-kilometre figure.
Scenario: The Gauteng Corporate Commute
- Vehicle: 1.5-litre turbocharged compact SUV
- Location: Inland (Gauteng) using Petrol 95 ULP at R26.92 per litre
- Average Fuel Consumption: 8.0 litres per 100 kilometres (l/100km)
- Daily Return Trip: 60 km
Step-by-Step Breakdown
- Calculate Litres per Kilometre:$$\frac{8.0 \text{ litres}}{100 \text{ km}} = 0.08 \text{ litres per km}$$
- Calculate Cost per Kilometre:$$0.08 \text{ litres} \times \text{R26.92} = \mathbf{\text{R2.09 per kilometre}}$$
- Calculate Daily Commute Cost:$$60 \text{ km} \times \text{R2.09} = \mathbf{\text{R125.40 per day}}$$
This plain-language example demonstrates that even a relatively fuel-efficient vehicle can easily accumulate high operational costs depending entirely on local geographical price tiers.
How the Calculation Works
The manual math behind our interactive tool relies on a standard, transparent formula used globally by logistics networks and fleet managers.
The Formula
To calculate your fuel-only running costs, the formula is:
$$\text{Cost per Kilometre (R/km)} = \left( \frac{\text{Fuel Consumption (l/100km)}}{100} \right) \times \text{Fuel Price per Litre (R/l)}$$
Step-by-Step Manual Execution
- Divide your vehicle’s average consumption rate by 100 to find out exactly how much fuel is burned over a single kilometre.
- Multiply that fractional fuel quantity by the current official retail price per litre for your specific fuel grade and region.
- Multiply the final cost-per-kilometre result by your total trip length to calculate your overall fuel overhead.
Related Calculators and Price Pages
To plan broader travel budgets or address commercial vehicle logistics, explore our suite of dedicated local tools and historical data directories:
- Fuel Calculators South Africa – Our main commercial hub consolidating all domestic travel and fuel-spend tools.
- Calculate Fuel Cost – Perfect for quick, simple point-to-point trip budgeting.
- Petrol Price Today – Real-time updates tracking active domestic pump rates across inland and coastal zones.
- Travel Reimbursement Calculator South Africa – Structured tool aligning your calculations with the latest SARS-compliant business travel tax tables.
- Commute Fuel Cost Calculator – Designed specifically for everyday motorists optimizing recurring office travel routines.
- Vehicle Running Cost Calculator South Africa – A comprehensive tool adding maintenance, depreciation, and insurance costs to your baseline fuel expenses.
- Bulk Diesel Cost Calculator – Specialized tool catering to commercial transport fleets, farming operations, and industrial consumers.
Frequently Asked Questions
What inputs does the cost per kilometre calculator need?
The calculator requires your vehicle’s average fuel consumption rate (expressed in l/100km), the current local fuel price in Rands per Litre (R/l), your total trip distance in kilometres, and your specific engine fuel type (petrol or diesel).
Are calculator results exact?
No. The outputs are helpful estimates. Real-world fuel efficiency changes continuously based on traffic congestion, tyre pressure, vehicle load weight, and individual driving styles. Official pricing from the DMPR should be tracked separately for formal audits.
Should inland and coastal prices be included?
Yes. South African fuel pricing is split into distinct regional zones. Because coastal areas do not require heavy rail transport from the coast to the interior, their petrol and diesel pump prices are lower than inland provinces like Gauteng. You must choose your correct geographical zone for an accurate budget.
How can users reduce fuel costs?
Motorists can cut their travel spend by practicing smoother acceleration, removing heavy unnecessary items from the vehicle, checking tyre alignment regularly, and planning routes via our commute tools to bypass peak traffic gridlocks.