What changed in August 2026
August 2026 split the country in two. Petrol motorists got a small cut of 52 cents per litre on both 93 and 95, while diesel users were hit with one of the sharpest single-month increases of the year — R1.39/l on 500ppm and R1.23/l on 50ppm. Illuminating paraffin rose R1.52/l. LP gas was the one clear winner, falling R4.41 per kilogram.
The month was dominated by the collapse of the US–Iran ceasefire talks. Renewed US strikes shut the Strait of Hormuz again mid-July and pushed Brent crude back towards $100 a barrel before it settled around $83. Averaged across the review period, Brent still came in lower than the month before — down from $86.53 to $82.37 — which is why petrol did not spike.
Diesel was a different market. International diesel product prices rose over the review period because Russia restricted diesel exports and several Middle East refineries ran below capacity. The rand also weakened slightly, from R16.34 to R16.46 to the dollar.
Petrol only avoided an increase because government cut the slate levy by 52.56c/l. Without that intervention, petrol would most likely have gone up this month rather than down — and that's almost exactly what happened the following month once the levy had far less room left to give.
Inland, a 60-litre tank of petrol 95 cost R1,534.80 in August — about R31.20 less than in July. A 70-litre diesel tank (typical Hilux or Fortuner) cost roughly R1,831.90 at the wholesale reference price — about R97.30 more than July. At the coast a 60-litre tank of 95 cost R1,482.60.
How SA fuel prices are set
South Africa uses a regulated fuel pricing system. Prices are set by the Department of Mineral and Petroleum Resources (DMPR), announced in the last week of each month, and take effect on the first Wednesday of the following month.
The calculation combines three components: the Basic Fuel Price (BFP), which reflects the international import cost of refined fuel plus shipping; government levies (general fuel levy, Road Accident Fund levy, customs and excise); and the slate levy, which recovers historical under-recoveries across the industry.
Petrol 93 is the standard grade for most of SA. Petrol 95 is required on the coast (Western Cape, KwaZulu-Natal) because higher altitude inland areas require a lower-octane fuel at the same combustion ratio. The coast requires 95. Most inland vehicles run perfectly on 93. Never put 93 in a turbocharged or high-compression engine that specifies 95.
The slate levy explained
The slate levy is unique to SA's pricing structure. It exists because the regulated price can fall below the actual import cost of fuel, creating a "negative slate" — effectively a debt owed to fuel importers. The slate levy is a mechanism to recover that debt gradually, and it self-adjusts as the balance improves. In August, the cumulative slate balance had improved sharply — to negative R7.418 billion at the end of June 2026, from negative R13.32 billion at the end of May — which let the levy drop from 113.94c/l to 61.38c/l, a 52.56c/l cut that is almost exactly the 52c petrol motorists got back at the pump.
Petrol's 52c decrease in August came almost entirely from the slate levy cut, not from cheaper fuel. With the levy down to 61.38c/l, there was far less headroom left in that mechanism — and it showed: by September, the balance had swung the other way and the levy rose again, adding to the pain rather than cushioning it.
Recent price history — petrol 93
| Month | Petrol 93 | Change | Diesel 500ppm | Change |
|---|---|---|---|---|
| February 2026 | R23.30/l | — | R22.15/l | — |
| March 2026 | R24.85/l | ▲ R1.55 | R23.90/l | ▲ R1.75 |
| April 2026 | R26.52/l | ▲ R1.67 | R25.44/l | ▲ R1.54 |
| May 2026 | R26.52/l | — (relief applied) | R31.17/l | ▲ R5.27 |
| June 2026 | R27.95/l | ▲ R1.43 | R27.92/l | ▼ R3.25 |
| July 2026 | R25.94/l | ▼ R2.01 | R24.78/l | ▼ R3.14 |
| August 2026 ← this article | R25.42/l | ▼ 52c | R26.17/l | ▲ R1.39 |
| September 2026 | R26.76/l | ▲ R1.34 | R29.11/l | ▲ R2.94 |
Table shows petrol 93 inland and diesel 500ppm inland as the primary reference grades. May diesel figure reflects the R5.27/l increase effective 6 May 2026. August figures are the official DMPR prices effective 5 August 2026; diesel is the wholesale reference price. September 2026 shown for context — see the current fuel prices page.
How fuel costs affect your car purchase decision
Running costs are one of the most underestimated factors in the total cost of ownership calculation for South African car buyers. At August 2026 prices, the difference between a 7L/100km petrol hatchback and a 10L/100km V6 SUV was roughly R500–R800 per month in fuel alone, depending on monthly kilometres driven.
When evaluating a used car purchase, factor in:
- Average fuel consumption (L/100km) from manufacturer specs — add 10–15% for real-world SA driving
- Petrol vs diesel: diesel was more expensive per litre than petrol inland in August, and diesel engines also cost more to maintain and repair — the old "diesel saves you money" assumption did not hold at August 2026 prices unless you cover very high mileage
- Tank size: a larger tank means fewer fill-ups but higher cash outlay per fill
- Turbocharged engines: most require 95 octane, which was R0.16/l more expensive than 93 inland (R0.08/l at the coast) in August
- Monthly kilometre estimate × L/100km ÷ 100 × current price = monthly fuel budget
Monthly km ÷ 100 × consumption (L/100km) × fuel price per litre = monthly fuel cost. Example at August 2026 prices: 1,500 km/month ÷ 100 × 8.5 L/100km × R25.42 (inland 93) = R3,241/month in fuel. Run the same sum with this month's price for a current figure.
Petrol treads water, diesel takes the hit
Petrol's 52c cut was real but small, and it came from a slate levy adjustment rather than cheaper fuel. Diesel gave back nearly half of July's big drop in one month, driven by Russian export restrictions and refinery capacity rather than crude prices. That pattern didn't stop — diesel rose again in September, this time joined by petrol once the slate levy's room to help ran out.
Where to find current prices
South Africa's fuel price cycle follows a fixed pattern: the DMPR publishes the official adjustment in the last week of each month, with the new price taking effect on the first Wednesday of the following month. The August 2026 prices on this page were superseded on Wednesday 2 September 2026.
For this month's official prices, the inland vs coastal breakdown and the fill-up cost calculator, see SA fuel prices — current petrol and diesel cost per litre, which is updated on the day of each DMPR announcement.
Frequently asked questions
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Get the Complete Inspection Guide Bundle — R299 →This guide is general information for South African motorists, not official confirmation. Fuel prices are set monthly by the Department of Mineral Resources and Energy (DMRE) and differ by fuel zone. Always confirm the current price at the pump or via the DMRE's official schedule before budgeting.