Biraz inceledim,
"The design of the front and the lowering of the chassis by 15 mm significantly improved the air flow values around the chassis and under the car.
A reduction in the weight helped reduce fuel consumption; instead of a full spare wheel, there is a tyre repair kit and the standard fittings include wheels with tyres that have a lower rolling-resistance force. "
SuperB 15 mm alçaltılmış mesela, lastik yuvarlanma dirençleri azaltılmış, gövdenin aerodinamik parametreleri optimize edilmiş, ağırlık azaltılmış, stepne yerine tamir kiti koyulmuş, lastik basınçları artırılmış vs...