Fuel Price Increase Shock for Business This Christmas

South African Fuel Price Hike: December 2025 Adjustment

The Department of Mineral Resources and Energy (DMRE) announced the monthly fuel price adjustments today (December 2, 2025), effective from Wednesday, December 3, 2025, at midnight. These changes are calculated monthly under the Fuel Price Formula, which determines the Basic Fuel Price (BFP) based on international and local factors. The formula then adds domestic elements like transport costs, margins, levies (e.g., Road Accident Fund levy at R2.41/litre, fuel levy at R3.84/litre for petrol), and the Slate Balance (accumulated over/under-recoveries from prior months). The BFP is primarily influenced by:

• International crude oil prices (Brent benchmark, approximately a 40-50% weight).
• International petroleum product prices (e.g., Platts assessments for gasoline/diesel, a 30-40% weight).
• USD/ZAR exchange rate (applied to import costs).
• Freight, refining margins, and other variables.

The Pricing Connundrum

Ironically, November 2025 saw subdued Brent crude with and average pricing of around $64.50/bbl, down about 5% from October’s $68/bbl, and a stronger Rand (November’s average – USD/ZAR 17.23, vs. October’s 17.30 average, a 0.4% appreciation). These should theoretically have lowered prices by reducing import costs in Rand terms.

However, the net result is a hike due to higher international petroleum product prices, which rose 2-3% in November amid seasonal demand, refining disruptions, and geopolitical tensions (e.g., Middle East supply risks). This outweighed the Brent dip and Rand gains by 1-1.5 cents/litre equivalent. Additionally, minor upward pressures from freight rates and a positive Slate Balance adjustment contributed, though the latter provided some offset.

Breakdown of Increases

The hikes are modest for petrol but sharper for diesel, reflecting diesel’s heavier weighting toward product prices (which surged more than gasoline benchmarks). Here’s the detail:

*Sources: DMRE announcement; prices exclude dealer margins (~R1-2/litre). Overall, December’s petrol prices remain around 6% below December 2024 levels, providing some relief amid inflation.

Implications

This adjustment adds aproximately R50-70 to a full tank (60-80 litre tank), hitting diesel users (e.g., trucks, farmers) harder during the holiday peak. It showcases the formula’s sensitivity to product prices over crude where refineries pass on higher crack spreads (product-crude differential, up $4/bbl in November).

A continued strong Rand (forecast of around 17.00-17.50 in Q1 2026) and stable Brent ( of $65-70) could stabilise or ease January prices, but OPEC+ cuts or Red Sea disruptions pose upside risks. For context, South Africa’s fuel prices have fallen 8% YTD 2025 due to earlier Rand strength, but volatility in prices still persists.