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Diesel Is About To Break Its Own Record

14 September 2026

Diesel Is About To Break Its Own Record

cost-control fuel

South Africa's diesel price didn't just rise this September - it jumped by more than 11%. Wholesale diesel went to R29.11 a litre for 500ppm and R30.05 for 50ppm, according to Freight News (13 September 2026), driven largely by the international oil price. That increase is already sitting in every fleet's fuel line for this month.

October looks worse. The Central Energy Fund's projections, reported by CAR Magazine on 10 September 2026, point to a further increase of R1.65 to R1.98 a litre - enough to push inland diesel to between R30.76 and R32.03 a litre. If that holds, it would be a new record, above the R31.18 a litre diesel hit inland in May 2026. The driver, per the same report: oil pushing past $106 a barrel on continued conflict in the Middle East and reduced Russian output.

Two records in five months is not a spike - it's a pattern. RFA CEO Gavin Kelly put it plainly after September's increase: "Every litre of fuel consumed on South Africa's roads affects the underlying health of the country's logistics economy," with effects that run through supply chains, transport systems and, eventually, shelf prices.

For an operator running a fleet, the practical problem isn't the size of any single increase - it's that the number you built this quarter's margins on is already out of date by the time you've finished building them. A cost-per-drop figure calculated in August doesn't survive September, and September's won't survive October either.

That argues for treating the fuel line as something to re-price against actual route cost every time it moves, not something to revisit at the next scheduled review. Operations that can see cost per route, per stop, in near-real time can absorb a resetting fuel price into their planning immediately; operations still working off last quarter's average find out they're underpricing a job only after it's delivered.

Diesel setting a new record twice in one year isn't a one-off to wait out. It's a reason to make sure your cost visibility moves as fast as the fuel price does.

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