Cape Town - Petrol is going up by 21c a litre (93 octane) and 23c/l (95 octane) next Wednesday.
The department of energy said on Friday the increases were due to higher international prices and a weaker rand currency.
I-Net Bridge reports the department also said the price increases between 95 and 93 octane petrol
differ due to the quarterly application of the octane price
The new pump price of 95 grade petrol in Gauteng will increase to R12.20/l.
Motorists at the coast will now have to pay R11.85 for a litre of petrol.
The wholesale diesel price will also go up by 40c to R11.34.
The latest price increase follows this year's highest single price hike of 93c/litre in August.
During the period under review‚ the average rand/dollar exchange rate weakened when compared to the previous period‚ the CEF reported. The average rand/dollar exchange rate for the period August 31 to August 27 was 8.3075 compared to 8.2758 during the previous period.
Last month's increase included a 3.5c/l increase in all grades of petrol. This increase‚ the department said‚ was necessary in order for service station operators to finance the wage increases for service station pump attendants and cashiers agreed upon at the Motor Industry Bargaining Council in September 2010.
Meanwhile, the single maximum national retail price for illuminating paraffin will increase by 44c to R8.67/l.
The maximum retail price for liquid petroleum gas will decrease by 3c per kilogram.
* Follow Fin24 on Twitter