The cost of refuelling a standard diesel family car has climbed past £100 per tank for the first time in over three years, highlighting the growing financial strain on households as geopolitical tensions linked to the Iran conflict continue to ripple through energy markets.
According to RAC data, diesel prices have risen sharply—up 40p per litre since the onset of the conflict—reaching an average of 182.77p per litre. Petrol prices have also increased, now averaging 152.83p per litre, bringing the cost of a full tank to approximately £84.
Simon Williams, head of policy at the RAC, noted that wholesale fuel indicators suggest petrol prices may begin to stabilise if crude oil costs do not climb further. However, diesel prices are expected to remain under upward pressure in the near term, prolonging cost challenges for drivers.
Oil spikes toward $120 as geopolitical tensions intensify
Oil prices have surged sharply, with Brent crude pushing above $117 and approaching $119 a barrel, as markets react to escalating rhetoric and ongoing supply risks.
With prices holding well above the $100 level, markets remain highly sensitive to further developments, with energy continuing to act as a key driver of inflation expectations and broader market sentiment.

