Hello, today wanted to speed up my car strongly and I noticed that the engine will be very tough from about 3900 rpm even though I pressed the pedal to the end. After c.a 4500 revolutions it is no longer fun to turn the engine up because I feel it is not turning up anymore. It is as if the car is pulled from behind, but the engine fights against it. The acceleration is thus noticeably bad. The question is now whether it is due to the mileage of 275000km and an old it is normal from 19 years, or if something is wrong with the engine. If there are also drivers who have the same. ps: it is a two-liter engine with 113 hp