Peugeot 306 1.6 – bad driving performance/too high consumption – how do you pull???

Drive a 306 with 1.6l, 88hp. Have the feeling that it pulls anything but better for the specified performance compared to a 75 hp Toyota Starlet (ok, the Starlet had an curb weight of just 780kg). Is that normal that the Peugeots are not such racers, or is there simply something wrong??? Have also between 2000-3000 a jerking and the engine sounds unclean, over it purrs like a kitty. He has now run just 70,000km, then the engine should doc h be still in great condition. A compression test showed 13 bar on the first cylinder, the others I could not measure because of the disturbing suction bridge, but I will probably catch up still, since I suspect that a cylinder limps because of the jerking… Do you have similar jerking or is it really a leaking valve o. similar??????? It also soaks like a hole, which brings my guess closer it’s true what’s wrong, he needs over 9 liters, d what do your 306s drive and what do they swallow? Had mine so far on the highway only on 180 and not too loose, that’s all I didn’t want because of the high speed. Think with a little patience would have been 190 to max. almost 200 in it.