2025 December Petrol Price Forecast: Major Diesel Hike Expected

According to data from the Central Energy Fund (CEF), the predicted December Petrol Price means diesel prices could rise by as much as 77 cents per litre. This projection is based on price calculations from 7 November 2025. The Department of Mineral Resources and Energy (DMRE) will officially confirm the new prices on Wednesday, 3 December 2025.

Petrol Prices Likely to Remain Stable

While diesel costs are expected to climb, the forecast for petrol remains relatively unchanged.

Current petrol price predictions:

• Petrol 93: decrease of 1 cent per litre
• Petrol 95: increase of 4 cents per litre

This means that for Gauteng residents, the petrol price might remain mostly unchanged, providing some relief for urban motorists.

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Major Diesel Hike Driven by Global and Local Factors

The major diesel hike stems from a combination of international and domestic pressures:

• Global oil prices surged at the end of October.
• The US Dollar has strengthened against the Rand.
• The weaker Rand makes importing fuel more expensive.

As a result, the CEF is reporting a diesel under-recovery — a situation where the cost of supply exceeds the current retail price.

Impact on Transport and Logistics

The expected diesel hike will significantly affect sectors that rely heavily on diesel:

• Trucking and freight companies will see higher fuel bills.
• Public transport operators may face increased operational costs.
• Food and goods prices could rise due to increased distribution expenses.

According to Stuff.co.za:

“Motorists could face major increases of roughly 60–70c/l in December.”

Paraffin and Household Energy Also Affected

For lower-income households using illuminating paraffin, the news is equally worrying:

• Illuminating Paraffin: projected increase of 71 cents per litre

This could place additional pressure on families relying on paraffin for cooking and heating.

What to Expect: December Petrol Price Forecast

The DMRE adjusts fuel prices on the first Wednesday of each month. On 3 December 2025, South Africa will receive its final price confirmation.

Until then, fluctuations in the Rand and global oil market could change the final numbers. However, the trend is clearly upward for diesel and paraffin.

For a look at upcoming transport innovations, read about the One Tap-and-Go Payment System coming for SA taxis, buses, and trains.

Advice for Motorists and Businesses

To prepare for the upcoming increase:

• Diesel vehicle owners should consider filling up before 3 December.
• Businesses can review fuel budgets and adjust logistics planning.
• Households relying on paraffin should stock up ahead of price changes.

Government Response and Market Outlook

So far, no formal intervention has been announced to cushion the diesel price hike. However, the Department of Energy is monitoring the market closely.

Should the Rand strengthen or oil prices decline, the CEF’s forecast may still shift before month-end.

Frequently Asked Questions (FAQs)

When will the new fuel prices take effect?

On 3 December 2025, as announced by the DMRE.

Why is diesel increasing more than petrol?

Diesel is more affected by international oil price spikes and refining costs. Recent global trends have widened the gap.

Could fuel prices still change before December?

Yes. The Rand/Dollar exchange rate and oil prices will continue to influence the final price.

Will this affect food and transport prices?

Likely yes. Diesel powers freight and public transport, which may pass on higher costs to consumers.

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The 2025 December Petrol Price Forecast shows minimal changes for petrol but a major diesel hike. Consumers and businesses should plan accordingly before prices rise on 3 December.