IN SHORT: South Africa’s diesel price surged by R6.19 per litre effective May 6, pushing 500ppm diesel to R32.09 and 50ppm diesel to R32.30, the first time either grade has breached the R32 mark. Petrol rose by R3.27 per litre, with 95 ULP inland hitting R26.63. Despite the government extending its levy relief, SARB Governor Lesetja Kganyago described the current situation as “the biggest jump in fuel price inflation in the history of inflation targeting.” May CPI could hit 4.2%, potentially forcing a 25 basis point rate hike at the May 28 MPC meeting.
South Africa has crossed into new inflationary territory as diesel breaches R32 per litre for the first time in the country’s history, driven by a Brent crude average that rose from $93.67 to $101 during the review period as the Hormuz conflict continues to disrupt global oil supply, with the SARB governor warning that the country is experiencing the worst fuel price inflation since the inflation-targeting era began.
The Department of Mineral and Petroleum Resources confirmed the price adjustments on May 5, effective from May 6. The increases compound three consecutive months of fuel price shocks since the Iran war began in late February.
- Both grades of diesel rose by R6.19 per litre. Diesel 500ppm now retails at a minimum of R32.09 per litre inland; diesel 50ppm at R32.30 per litre. These are the highest diesel prices ever recorded in South Africa, surpassing the previous record set during the Russia-Ukraine war energy shock of 2022. Petrol 93 and 95 both rose by R3.27 per litre, bringing 95 ULP inland to R26.63, matching prices last seen at the peak of the 2022 cycle.
- Two separate mechanisms are driving the increase. The first is the international crude and product price movement: Brent averaged $101 during the review period (March 27 to April 29), up from $93.67, directly increasing the basic fuel price. Middle distillates (diesel and paraffin) rose more sharply than petrol due to higher demand and reduced Persian Gulf supply. The second mechanism is the slate levy: the cumulative negative slate balance reached R14.173 billion at the end of March 2026, triggering a mandatory 122.70 cents per litre slate levy on both petrol and diesel under the self-adjusting mechanism.
- The government extended its levy relief. The R3.00 per litre petrol reduction and R3.93 per litre diesel reduction apply from May 6 to June 2. Without this relief, petrol would have risen by R6.27 per litre and diesel by approximately R10.12 per litre. The relief costs Treasury approximately R6 billion per month in foregone revenue and expires on July 1.
- SARB Governor Lesetja Kganyago told media that South Africa is “experiencing the biggest jump in fuel price inflation in the history of inflation targeting.” He added that food price inflation is an even bigger concern as diesel costs flow through the agricultural and logistics supply chain. The SARB’s May MPC meeting is scheduled for May 28 and analysts now expect a serious discussion about a 25 basis point rate hike, which would be the first increase since the tightening cycle ended in 2024.
- The May fuel increase is projected to add approximately 0.6 percentage points to headline CPI, potentially pushing the May reading to 4.2%, well above the SARB’s 3.7% full-year forecast and approaching the upper boundary of the 3-6% target range. The knock-on into food, transport and services inflation is still working through the system.
- Discovery Insure data published this week showed that fuel spending across its client base dropped 35% in April, with transactions falling 28%, as motorists began rationing trips in response to the April price shocks. The demand destruction is real but has limits: trucks carrying food and goods, generators providing power backup, and agricultural machinery cannot reduce their diesel consumption by switching to alternatives.
- COSATU warned: “Government’s extended fuel levy relief is a positive step forward, but more relief may be needed due to the massive rise in fuel prices resulting from the war in the Middle East. Workers already drowning in debt will not be able to continue to survive such painful petrol, diesel and paraffin price hikes.”
The South African government’s fuel price subsidy architecture is now carrying a R14.173 billion negative slate plus ongoing monthly levy relief, all of it expiring on July 1 when, unless oil prices have fallen significantly, pump prices will face another upward adjustment of potentially R3-plus per litre as the full levy reinstates.
The Bigger Picture: South Africa’s fuel crisis is a direct transmission mechanism from the Hormuz war into its domestic economy, and the transmission is accelerating. The slate levy addition is particularly pernicious: it reflects cumulative under-recoveries that accumulated during the April relief period and must now be repaid by consumers. Every month of levy relief generates a future month of additional costs. The July 1 cliff, when both the slate levy additions and the temporary levy reductions resolve simultaneously, is the moment analysts are watching most closely. If Brent is still above $100 in July, South Africa faces its most severe single-month fuel price increase in history. The SARB cannot fix a global oil shock with interest rates. But it will be forced to respond to the inflation it generates.
Source: Moneyweb / DMRE official statement / BusinessTech / The Citizen, May 5-6, 2026
