116i engine problem

I have a BMW 116i and it is old 1,5 years now, passed 14 000 kilometers. From the start it has anoying grumbling sound from the engine on low RPM (till 3000) . Untill 3000 car shakes and has a sound like diesel.
And the car loses power on low RPM. After 3000 it works without problems when it gets power. I know it is 1600 cc 115 HP but I think that it is weak. Dealer said 3 times that they are waiting answer from the german factory about that problem but I still didn't receive the answer. What should I do? They say that they changed some electrical cables but nothing changed with the sound of engine. On low RPM it works louder than diesel! I bought gasoline engine because I didn't want noise and it works awful on low RPM. Car spends 11 liters/100 kilometers . I am in Croatia, Europe.
Owners of 116i, does anyone has problem like this? What do you think that is the problem?
Thank you
Antonio email: infoDELETE snipped-for-privacy@makarska-rivijera.hr
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shakazulu wrote:

years old and has 14,000 kilometer? You want old, I drive a 1990 E34 535i, 5spd with 108,000 miles.
Do you have another dealer near you? If so, try them.
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90 is old? Oy...
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Need Mercedes parts? http://parts.mbz.org
Richard Sexton | Mercedes stuff: http://mbz.org
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Richard Sexton wrote:

its *only* 1,5 years old with 14,000 kilometer! Vey!
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I'd say it is just a language thing and 'old' and '1,5 years' would be transposed for English as opposed to his native language. Only wish I had as good a command of any foreign language. ;-)
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Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
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bfd wrote:

Does anyone know what could be the problem?
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