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.
Diesel 500ppm Price: Current Diesel Price
The official wholesale diesel 500ppm price in South Africa has been adjusted downward by R2.71 per litre. This official price schedule, regulated by the Department of Mineral and Petroleum Resources (DMPR), is effective from 2 September 2026.
Because diesel is not subject to a fixed retail pump price like petrol, the figures below represent the baseline official wholesale prices. Retail stations and commercial suppliers add their own margins to these figures.
Current Official Wholesale Diesel 500ppm Prices
| Region | Wholesale Price (per Litre) | Net Monthly Change |
| Inland (Gauteng) | R29.11 | ↑ R2.94 |
| Coastal | R28.24 | ↑ R2.94 |
Note: These values are official wholesale benchmarks. For retail pump rates or general context across all fuel grades, you can view the parent diesel price per litre South Africa page.
50ppm vs 500ppm Diesel
South Africa operates a dual-grade diesel market divided by sulphur content, measured in parts per million (ppm).
- Diesel 500ppm (0.05% Sulphur): This is the high-sulphur grade. It is primarily utilized by older diesel engines, heavy agricultural machinery, industrial generators, and large commercial transport fleets. It offers a lower baseline cost per litre but contains more impurities.
- Diesel 50ppm (0.005% Sulphur): This is the low-sulphur, premium grade required by modern passenger vehicles, SUVs, and high-performance common-rail turbo-diesel engines.
When evaluating operational costs, users must choose the grade suited to their machinery. If your fleet requires premium low-sulphur fuel, you can monitor the diesel 50ppm price specifically. For an in-depth mechanical and financial breakdown between the two grades, see our comprehensive guide on diesel 50ppm vs 500ppm.
Vehicle Manual Caution: Always consult your vehicle or equipment manufacturer manual before selecting a fuel grade. Utilizing 500ppm diesel in modern vehicles designed exclusively for 50ppm can damage exhaust after-treatment systems and void warranties.
Inland vs Coastal Diesel Price
The baseline cost of diesel in South Africa varies depending on geographical location. The current structure reflects a fixed 87 cents per litre premium for inland consumers compared to coastal zones.
- Inland Price (R29.11/L): Applies to Gauteng, Mpumalanga, Free State, North West, and parts of Limpopo.
- Coastal Price (R28.24/L): Applies to port areas such as Cape Town, Durban, Gqeberha, and East London.
This price gap is directly driven by regulated zone differentials, which account for the cost of transporting refined fuel via pipelines, rail, and road networks from coastal ports up to inland hubs. For a full analysis of how these zones affect your operational region, visit the diesel price inland vs coastal breakdown.
Wholesale vs Pump-Price Context
Unlike petrol, which has a strictly mandated retail price set by law, diesel pricing is partially deregulated in South Africa. The government sets a formal wholesale price, but retail service stations are permitted to set their own pump prices to cover localized overheads and generate profit margins.
Commercial Impact
For high-volume commercial buyers, fleet operations, and agricultural businesses, purchasing in bulk avoids retail pump markups entirely. Procurement managers should track the official diesel wholesale price to negotiate competitive commercial supply contracts.
Diesel Forecast and History
Fuel price adjustments occur on the first Wednesday of every month, calculated using international macroeconomic indicators tracked over a rolling review period.
Key Pricing Drivers
- Basic Fuel Price (BFP): The core import parity cost based on global oil refining values.
- Brent Crude Oil Price: Global supply and demand dynamics directly affect refined product pricing.
- Rand/US Dollar Exchange Rate: Because international oil is dollar-denominated, a stronger Rand reduces local import costs.
- The Slate Levy: A self-adjusting mechanism implemented by the Central Energy Fund (CEF) to balance cumulative under- or over-recoveries by oil importers.
For the current pricing cycle, data from the Central Energy Fund (CEF) reflects ongoing volatility in crude markets alongside local currency movements. To track upcoming mid-month indicators, potential adjustments, or historical price trajectories, check the diesel price change South Africa page.
Calculator and Fleet-Use Links
Managing monthly fleet expenditure or industrial fuel requirements requires accurate forecasting tools. Because diesel pump prices vary by station, commercial calculations should always be treated as informed estimates.
To project your exact logistical or operational expenditures, utilize our interactive suites to calculate fuel cost or review regional benchmarks across the broader fuel price South Africa matrix.
Frequently Asked Questions
What is the current diesel 500ppm price?
As of 2 September 2026, the official wholesale price for diesel 500ppm is R29.11 per litre inland and R28.24 per litre at the coast. Retail pump prices vary by station.
What is the difference between 50ppm and 500ppm diesel?
The primary difference is sulphur content. Diesel 500ppm contains 0.05% sulphur and is suited for older commercial or agricultural machinery, while 50ppm contains 0.005% sulphur and is designed for modern passenger vehicles.
Do inland and coastal diesel prices differ?
Yes. Inland prices carry a transportation premium (currently 87 cents per litre higher than coastal regions) to account for moving fuel via pipeline or road networks from the coast.
When are South African diesel prices updated?
The Department of Mineral and Petroleum Resources adjusts fuel prices on the first Wednesday of every month based on global oil prices and the Rand/USD exchange rate.