August fuel prices: Diesel set for significant increase next month

August fuel prices: Diesel set for significant increase next month is the latest outlook for South African motorists as international oil market volatility continues to influence local fuel costs. While petrol users may receive only slight relief in August, diesel consumers are expected to face substantial increases of more than R1 per litre if current market trends continue.

Early estimates from the Central Energy Fund (CEF) indicate that petrol prices could decline marginally, but strong under-recoveries recorded during the past week threaten to erase most of those gains before the official price adjustment. Meanwhile, diesel prices remain under significant pressure due to rising global oil costs and geopolitical uncertainty.

As South Africa prepares for the next monthly fuel price adjustment, motorists, transport operators and businesses are closely monitoring developments in the international energy market.

August fuel prices outlook disappoints motorists

South Africans have become accustomed to fluctuating fuel prices over the past several months, with geopolitical tensions, exchange rate movements and crude oil prices driving significant changes at the pumps.

The latest August fuel prices outlook suggests that petrol prices may decrease by only a few cents, while diesel is expected to record one of the largest monthly increases this year.

Current CEF data shows:

• Petrol 95 ULP: decrease of approximately 21 cents per litre
• Petrol 93 ULP: decrease of approximately 26 cents per litre
• Diesel 50ppm: increase of approximately R1.63 per litre
• Diesel 500ppm: increase of approximately R1.80 per litre

However, analysts believe the petrol decreases are unlikely to remain at these levels by month-end, with current under-recoveries pointing to reductions closer to five cents per litre.

Diesel price increase South Africa expected to exceed R1

The biggest concern remains the expected diesel price increase South Africa will experience in August.

Unlike petrol, diesel prices have been significantly affected by persistent international market pressures.

Should current under-recoveries continue, diesel users may pay between R1.30 and R1.80 more per litre, depending on the fuel grade.

This increase is expected to affect:

• Freight and logistics companies
• Farmers and agricultural businesses
• Mining operations
• Bus operators
• Construction companies
• Diesel-powered vehicle owners

Higher diesel costs often filter through the broader economy by increasing transportation expenses, ultimately pushing up the prices of goods and services.

Petrol price forecast August 2026 remains uncertain

Although motorists were hoping for another sizeable reduction after July’s welcome price cuts, the latest petrol price forecast August 2026 suggests only limited relief.

Fuel analysts caution that the final adjustment depends on:

• Daily movements in Brent crude oil prices
• The Rand/US Dollar exchange rate
• The Slate Levy
• Remaining daily recoveries before month-end

If oil prices continue easing over the coming days, motorists could receive slightly larger reductions than currently projected.

However, any renewed escalation in global tensions could quickly reverse those gains.

Slate Levy could influence final fuel prices

One important factor still capable of changing the final August prices is the Slate Levy.

The Slate Levy is a mechanism used to compensate fuel companies when international fuel costs fluctuate significantly.

The current levy stands at approximately R1.14 per litre.

If government reduces this levy before the August adjustment, motorists could benefit from more meaningful petrol price reductions.

Should the levy remain unchanged, however, petrol prices are likely to stay close to current levels.

South Africa fuel prices remain vulnerable to global events

The outlook once again demonstrates how closely South Africa fuel prices are linked to international events.

During the first half of the year, escalating conflict in the Middle East caused sharp increases in global crude oil prices.

These increases translated directly into higher fuel prices for South African motorists during April and May.

Although July brought welcome relief following temporary diplomatic progress, renewed tensions during the month have once again placed upward pressure on fuel costs.

This volatility makes accurate monthly forecasting increasingly difficult.

Brent crude oil prices continue driving local fuel costs

The biggest driver of current fuel uncertainty remains Brent crude oil prices.

At the beginning of the month, Brent traded at approximately $72 per barrel, its lowest level in several months.

However, escalating conflict involving the United States and Iran dramatically changed market sentiment.

Concerns that oil supplies moving through the Strait of Hormuz could be disrupted caused prices to surge above $100 per barrel.

More recently, renewed hopes of diplomatic negotiations have pushed Brent prices back toward $88 per barrel, following one of the largest single-day declines seen this year.

Markets remain highly sensitive to any developments in the Middle East, meaning further volatility remains likely.

Current fuel prices across South Africa

Before the August adjustment takes effect, motorists are paying the following approximate prices:

95 Unleaded Petrol

• Coastal regions: R25.23 per litre
• Gauteng: R26.11 per litre

93 Unleaded Petrol

• Gauteng: R25.94 per litre

500ppm Diesel

• Coast: R23.91 per litre
• Inland: R24.78 per litre

50ppm Diesel

• Coast: R24.41 per litre
• Inland: R25.16 per litre

These prices follow substantial reductions implemented during July, when:

• Petrol decreased by R2.01 per litre
• Diesel dropped between R3.14 and R3.58 per litre

Those reductions offered temporary financial relief after several months of record-high fuel costs.

Impact on motorists and businesses

If diesel increases materialise as currently forecast, the effects will extend well beyond motorists filling up at service stations.

Higher diesel prices generally increase:

• Food transportation costs
• Public transport operating expenses
• Agricultural production costs
• Retail distribution costs
• Manufacturing expenses

Businesses dependent on heavy transport are expected to experience the greatest impact, potentially leading to higher prices for consumers across multiple sectors.

Private motorists using petrol-powered vehicles may avoid significant increases this month, but the broader economic consequences of rising diesel costs could still affect household budgets.

What motorists should expect next

Fuel price predictions remain subject to daily changes until the Department of Mineral and Petroleum Resources announces the official monthly adjustment.

Should Brent crude continue declining and the rand remain stable against the US dollar, petrol prices may finish slightly lower than currently projected.

Diesel, however, appears almost certain to increase significantly unless global oil prices retreat sharply before the pricing window closes.

Motorists are encouraged to monitor official fuel price announcements during the final days of the month to prepare for the August adjustment.

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August fuel prices remain tied to global uncertainty

The August fuel prices: Diesel set for significant increase next month outlook highlights the continuing uncertainty facing South African motorists.

While petrol users may receive only modest relief, diesel customers are expected to bear the brunt of global oil market volatility, with increases potentially exceeding R1.50 per litre.

The combination of fluctuating Brent crude oil prices, Middle East geopolitical tensions, exchange rate movements and domestic pricing mechanisms continues to shape South Africa fuel prices.

As August approaches, consumers and businesses alike will be hoping for calmer international markets that can ease pressure on local fuel costs. Until then, motorists should prepare for another month of uncertainty at the pumps.

References

1. BusinessTech. “August fuel prices: Diesel set for major increase as oil volatility continues.” Available at: https://businesstech.co.za/news/
2. Reuters. “Oil prices fluctuate as Middle East tensions and supply concerns weigh on markets.” Available at: https://www.reuters.com/markets/commodities/
3. News24. “Fuel price outlook: Diesel expected to rise while petrol remains largely unchanged.” Available at: https://www.news24.com/fin24/
4. The Citizen. “Fuel price predictions: Diesel increase likely in August amid global oil volatility.” Available at: https://www.citizen.co.za/business/
5. Central Energy Fund (CEF). “Daily Fuel Price Snapshot and Fuel Price Data.” Available at: https://www.cefgroup.co.za/