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Hi Guys,
Today on parking/cold stop I'v realised some strange stertorous sound when accelerate and release. Sound come from back of the engine.
Sorry for the quality - the best can be heared in 10s or 17s - it's kid of metalic/rack sound. Model 2021 C180.
Any idea? is this normal?
Sound file attached
Last edited by Sidian; Dec 9, 2024 at 06:00 PM.
Reason: formating
Hi Guys,
Today on parking/cold stop I'v realised some strange stertorous sound when accelerate and release. Sound come from back of the engine.
Sorry for the quality - the best can be heared in 10s or 17s - it's kid of metalic/rack sound. Model 2021 C180.
Any idea? is this normal?
Did some checks... lids are fine not vibrating, also all the hoses, clamps are stable.
Add 2 more videos with that squeaking sound... I'm aware that mobile might exaggerates the sound but whole engine in my opinion sounds like diesel... There is only 29,000 km on it only so worries my double.
Did some checks... lids are fine not vibrating, also all the hoses, clamps are stable.
Add 2 more videos with that squeaking sound... I'm aware that mobile might exaggerates the sound but whole engine in my opinion sounds like diesel... There is only 29,000 km on it only so worries my double.
Strange, what is stranger is your videos are not working anymore, the file doesn't open for me, maybe my device doesn't support the format. Can you upload to youtube or some cloud sharing platform then link the video over?
It doesn't sound like a mechanical issue certainly sounds like plastic/trims just hitting things, is the sound apparent with hood off doors closed and everything closed and just simply driving?
After closing everything up you can hear form inside... of-course much quieter.For test I took off the covers, I moved elements and no change.
It's big mysterious... at first was thinking about turbo or timing belt tensioner but other hand i'ts low millage.
After closing everything up you can hear form inside... of-course much quieter.For test I took off the covers, I moved elements and no change.
It's big mysterious... at first was thinking about turbo or timing belt tensioner but other hand i'ts low millage.
never heard this issue on the W206, maybe your last resort is the dealership : ( sorry I couldn't help.
I can hear the same sound in my C200. Same engine, just tuned differently.
Haven't checked what it is yet to be honest, but planning to when i find some time.
I can hear the same sound in my C200. Same engine, just tuned differently.
Haven't checked what it is yet to be honest, but planning to when i find some time.
Thanks for chiming in to help OP. I am starting to wonder if it is normal (?) since you have the same issue as well.
It might just be normal, wouldn't be the first modern engine with similar "issues".
Those engines got too complicated in a very bad way, partially due to Euro norms.
Like introduction of GPF in EURO6. EURO5 engines were already very clean, but they decided to make it even "better". In effect engines are choked, but consume MUCH more fuel in idle, than SAME (or almost same) engines with EURO5 norm (0.4-0.6 liters/hour in EURO5 vs ~1.5 liters/hour in EURO6).
Had similar sounds in my previous EURO6 car (1.5 TSI from VAG) and nothing like that in EURO5 1.4 TSI. I don't know (yet) if and how this could be related, but will probably be studying the topic
It might just be normal, wouldn't be the first modern engine with similar "issues".
Those engines got too complicated in a very bad way, partially due to Euro norms.
Like introduction of GPF in EURO6. EURO5 engines were already very clean, but they decided to make it even "better". In effect engines are choked, but consume MUCH more fuel in idle, than SAME (or almost same) engines with EURO5 norm (0.4-0.6 liters/hour in EURO5 vs ~1.5 liters/hour in EURO6).
Had similar sounds in my previous EURO6 car (1.5 TSI from VAG) and nothing like that in EURO5 1.4 TSI. I don't know (yet) if and how this could be related, but will probably be studying the topic
An how about your current avg fuel consumption L/100km?
I also try to get dealer check on this... hope is nothing related to timing belt or camshaft. Once get any news will post it.
I don't think so.
I mean in theory it COULD be, as timing chain in those engines seems to be on the same side as flywheel, so more or less the place where you hear this noise.
However that would mean, that chain would have to be very stretched, which is unlikely. Also i had a car with stretched timing chain, which was sometimes touching the engine body - was a different sound. Also you would probbly hear the chain during cold startup. At least in my case i don't hear anything.
It sounds more like something resonating. Question is what?
An how about your current avg fuel consumption L/100km?
Current average is 8.8.
In the city driving (very congested Kraków, Poland, a lot of traffic jams) it's between 9-15 liters. 15 was my "record high" when i was stuck in traffic jam for almost whole trip. Normal driving in Kraków is between 10-11.
Highway (140-150km/h) is between 7.3 (lowest i got on summer tyres) to 9 (highest i got on winter tyres and heavy wind). Just today done 600km on the highway and got 8l/100km.
Can't tell about other roads types/speeds, and haven't tested it yet
I have C200 4Matic. 4Matic adds usually 05-1l/100km, especially that in Mercedes RWD platform cars it's permanent 4 wheel drive, not something like Haldex in most European cars.
For comparison before i owned Skoda Octavia 4, 1.5 TSI DSG (eTEC). Same driving, same places - city 8-10, highway 6.5-7.5. So quite much less, but that was not 4x4 and car is roughly 300kg lighter, has 150HP compared to 200 in C200, and it has 0,2 lower cx.
So consuption in C200 4Matic is... not bad, but as i'm recently driving quite a lot, and that will not change in coming years, i think i will drive it for a year or two, than sell it and get C300d
Last edited by Felix2024; Dec 11, 2024 at 06:26 PM.
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