Petrol cars in general produce less NOx per kilometre than diesel vehicles. However, the new test shows that the Ford Focus 1.0 EcoBoost and Mini Cooper 1.5, which both feature three cylinder, turbocharged petrol engines that are said by their makers to bring “downsizing” efficiencies to drivers, produce far more NOx in real world driving than petrol vehicles with more traditional, larger engines.
Petrol cars in general produce less NOx per kilometre than diesel vehicles. However, the new test shows that the Ford Focus 1.0 EcoBoost and Mini Cooper 1.5, which both feature three cylinder, turbocharged petrol engines that are said by their makers to bring “downsizing” efficiencies to drivers, produce far more NOx in real world driving than petrol vehicles with more traditional, larger engines.