BMW 1-Series Forum (F20) 135i - 1Addicts.com > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > Help. N13 cycle fluctuation
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      02-18-2025, 03:16 PM   #1
pozitif
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Help. N13 cycle fluctuation

I have a problem. Recently, in my BMW F20 with the N13 engine code, when I press the brake, the RPM gauge fluctuates between 1000 and 3000 just before coming to a stop. Then, right before the car fully stops, the instant fuel consumption jumps to 15-20 liters. Additionally, gear shifts have become slightly more noticeable, and fuel consumption has increased. What could be the problem? Does anyone have any knowledge about this? thanks.
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      02-18-2025, 05:03 PM   #2
No one
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From your description it's quite apparently engine braking, like you were trying to stop without disengaging a gear, declutching. Engine struggles not to be stopped as your automatic gearbox fails to shift down smoothly. Simply put, something seems wrong with the gearbox.
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      02-18-2025, 05:52 PM   #3
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Quote:
Originally Posted by No one View Post
From your description it's quite apparently engine braking, like you were trying to stop without disengaging a gear, declutching. Engine struggles not to be stopped as your automatic gearbox fails to shift down smoothly. Simply put, something seems wrong with the gearbox.
Thank you. I think so too. When I examine the transmission values, there is no problem. The transmission oil was changed 1 year ago. I think I should have it checked again. There is no fault record.
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