The French company Peugeot states that the  E85-powered Peugeot 307 BioFlex will emit about 5 per cent less CO2 than a similarly equipped Peugeot 307 working on a lead-free gas, which will be some 169 g of CO2 per km as opposed to 178 g in the case of gasoline-powered vehicle.  The Peugeot 307 BioFlex is not an ordinary flex-fuel vehicle, it uses the so called SuperEthanol fuel, consisting of 85% agricultural ethanol and 15% of lead-free petrolwhich is "progressively being made available at service stations across  France".

Reduction in CO emmisions

The combustion of E85 fuel emits approximately 5 % less CO2 than that of lead-free petrol, and in the case of the 307 BioFlex working on a combined cycle, this corresponds to 169 g of CO2 per km as opposed to 178 g in the case of petrol.  This enables drivers to run the car only on lead-free petrol if  they want,  in which case the 307 BioFlex  mpg will be equivalent of the 307 equipped with the standard petrol engine, resulting in the 307 BioFlex running on lead-free petrol obtaining  identical results in terms of both performance and fuel consumption, as the standard petrol engine. 

The digital engine control unit specific to 307 BioFlex vehicles manages the fuel supply according to the fuel composition measured by the lambda (EGO) sensor.

Brazil's location in the tropical and subtropical zones of the world ensures intense solar radiation year-round, the basic requirement of bioenergy production. This comparative advantage enables the country to be a leader in the international biofuel market, promoting energy products derived from agroenergy.  Brazil has become the poster boy for ethanol production and with her massive sugar cane plantations have fuelled a wholesale switch from petrol to biofuels, enabling self sufficentecy in motor fuel.

The Peugeot 307 BioFlex emits 5% less CO2 than its petrol counterpart (169g per km instead of 178g / km)  and Peugeot is eager to promote biofuels, there will be no additional cost for the customer to cover the extra outlay for technical adaptation and  the 307 BioFlex models should  be available at the same price as the corresponding petrol versions.