Seicento 0.9 extremely weak on the chest?

Hello together, I drove the Seicento of my girlfriend today. I noticed that the box is extremely lame. Sure, I don’t expect any miracles at 900cc and 39hp but there should be more than 120km/h in it on a flat track, right? Starting was enough, there was a distance of 15km. 😉 At least there are 140km/h in the papers. I will look at the air filter tomorrow and turn the spark plugs out. I didn’t notice any problems. Oh yes, the car is Bj 98 and has 133tkm on the clock. Best regards Kris