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Hi guys!
I just(in Feb) picked up momentum pro B4. This is my first owned premium car - switched from hyundai (premium version of i30/elantra gt) but I've driven quite a few audis and bmws.
I have clocked 2k KMs and I must say that is third worst car I've ever had. My main concern is extreme engine jerk at low speeds. I would like to ask you if my problem is model specific or unit specific.
Test case: I accelerate to 4th, 5th gear and allow engine to downshift without pressing pedals. When at around 30km/s I press brake to GENTLY stop the car. When almost at halt, start stop kicks in and car jerks like crazy causing car to lunge forward about 1-2meters. This not always happen and happens more when engine is hot.
Sometimes there is a specific metalic click when driving / changing lanes. Also there is a noticeable transmission jerk when accelerating but thos happen randomly.
Shop told me that 'you sir have KERS engine'.. but for me this behavior is unacceptable. Anyone have same issues? Driven xc60 with same engine and transmission and issue is nonexistent..
 

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Hola desde España, yo tengo un xc40 b4 awd y es super suave, su problema tiene que ser una avería de su unidad, el coche tiene una buena potencia los cambios son suaves y es star / stop no se nota nada.
nada de ruidos extraños.
yo lo llevaría al mecánico a reparar.

espero le sirva de ayuda
 
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