Opel Agila with Z10XE – high oil consumption and exhaust light is on

Hello, 2 weeks ago I bought my daughter a Agila A 1.0 because she quickly needed a new car. Unfortunately, we quickly found that he has a very high oil consumption (about 2 liters to 1000 km). Moreover, the exhaust light has been shining continuously since recently. Oil mist from the exhaust can not be detected, however, it is quite worn out. Also in the stand he does not lose oil and the engine is slightly damp from the outside, but nothing special at 170,000 km running performance. The oil pressure sensor is also dry. I did a compression test with a warm engine today: – Cylinder 1 – 14.5 after 9 revolutions – Cylinder 2 – 14.5 after 9 revolutions – Cylinder 3 – 13.5 after 12 revolutions. After 8 revolutions he had 12.5 The spark plugs had red-brown color, but the candle of Cylinder 3 was quite oily on the sides. Also in the candle hole there was some oil. The oil looked however as if it was s It is said that he got one after the sign before 8000 km or 11 months ago. To the engine run it is still to be said that he shakes himself in idleness quite. But I suspect that this is connected with the exhaust light. I have to get a diagnostic device first, then I read out the error memory. But to the oil consumption I need hints and ideas from you, how I should proceed. Greeting from the north Reiner-Omega