The benefits of gasoline engine downsizing has its latest poster child: the new Polo GTI. It’s a graphic example of why diesel market share in Europe is declining, especially in smaller cars: a 25% reduction on the European mileage standards, without any loss of performance. The GTI’s 1.4 liter TSI produces 177 hp (132kW), exactly the same as its 1.8 liter predecessor. But the combined fuel consumption is 5.9 L/100km (40 mpg US)—equivalent to CO₂ emissions of 139 g/km, 25% lower than the outgoing model. Knowing that it also squirts to 100km (62 mph) in 6.9 seconds and comes standard with a 7 speed DSG transmission is only rubbing the wound of knowing it’s not coming to the US with salt. But undoubtedly, tightening CAFE standards will eventually send VW’s pioneering 1.4 and 1.6 TSI engines our way; the question is only in what body. (Read More…)