Brazil's state-run oil company Petrobras is once again in crisis: caught in a political tug of war over rising fuel costs.

Far-right President Jair Bolsonaro, seeking re-election in October, is widely blamed by voters for double-digit inflation, polls show, on the back of skyrocketing fuel prices.

Feeling the heat, Bolsonaro last week fired Petrobras CEO Joaquim Silva e Luna, saying the petrol price was "unaffordable" and amounted to a "crime" against Brazilians.

Tied to international market movement, fuel prices in Brazil rose 33 percent in the past year even as the economy recovers from the effects of the coronavirus pandemic.

Russia's war in Ukraine has led to a spike in crude prices in recent weeks, adding to the pressure.

Petrobras determines the price of petrol at the pump
Petrobras determines the price of petrol at the pump AFP / CARL DE SOUZA

"Manipulating tariff policy is like manipulating the law of gravity," Silva e Luna said after his firing last week.

Inflation in Brazil, meanwhile, rose more than 11 percent in a year, and opinion polls show that three-quarters of Brazilians blame Bolsonaro for their thinning wallets.

Bolsonaro's main rival, leftist former president Luiz Inacio Lula da Silva, has also vowed to "Brazilianize the fuel price" -- meaning to adapt it to the reality on the ground.

Lula, a former trade unionist and popular ex-leader, is the polled favorite ahead of October's vote.

Incumbent President Jair Bolsonaro (L) and leftist former leader Luiz Inacio Lula da Silva face of in elections in October
Incumbent President Jair Bolsonaro (L) and leftist former leader Luiz Inacio Lula da Silva face of in elections in October AFP / EVARISTO SA

With the fuel price in both men's crosshairs, the future of Petrobras -- which determines the price of petrol at the pump -- depends very much on the outcome of October's elections.

The company has hardly had time to settle after the 2014-2021 Operation Car Wash corruption probe that saw several top politicians and business executives convicted for embezzlement of billions of dollars from the oil giant.

After a tough year in 2020 due to the coronavirus pandemic freezing global travel, Petrobras posted a record net profit of nearly $20 billion in 2021.

But the results were not enough to satisfy the political bosses.

Jose Mauro Coelho has been nominated to take over as CEO of Petrobras
Jose Mauro Coelho has been nominated to take over as CEO of Petrobras AGENCIA BRASIL via AFP / Fabio POZZEBOM

According to economist Gesner Oliveira, Silva e Luna was sacrificed by Bolsonaro "to satisfy his electorate".

Silva e Luna's predecessor, Roberto Castello Branco, was fired by the president a year earlier for similar reasons.

But replacing the latest CEO has turned out to be more difficult than foreseen.

Bolsonaro's pick, economist Adriano Pires, withdrew his name from the race this week due to a possible conflict of interest over his other role as head of an energy consulting firm.

Another nominee of the president, Rodolfo Landim, also withdrew to concentrate his attention on the Flamengo football club of which he is president.

Several other possible candidates had declined the job, according to the Brazilian press.

Then on Wednesday, the government nominated Jose Mauro Coelho, who was in charge of oil issues at the Ministry of Mines and Energy.

His appointment could be approved at a shareholders' meeting on April 13, making him the 40th Petrobras CEO in 68 years.

Whoever is at the helm, the pressure from the top will be intense.

"This is a position exposed to very strong political pressure, and each dismissal is an easy political response to a complex economic problem," Adriano Laureno of consulting firm Prospectiva told AFP.

Analysts say that internal regulations at Petrobras, which is listed on the New York and Sao Paulo stock exchanges, as well as Brazil's reliance on imported oil, prevent any drastic change in pricing policy.

"A stabilization fund could be set up to mitigate price fluctuations, but it is not possible to change the tariff policy in depth," said Oliveira.

Petrobras is also under threat of privatization, a move favored by Bolsonaro and several of his top political backers.