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Old Oct 14, 2023 | 10:46 PM
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Glaucio Poyares's Avatar
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C300 coupe
engine change.

Hey guys, I have a 2017 c300 coupe, but I'm not happy with the engine it has and also with the roar which is really bad for me, can anyone tell me if it's possible to swap it for the c43 engine and if it needs a lot of adaptation or not?
Is it worth it for the cost benefit or is it easier to change cars?

Last edited by Glaucio Poyares; Oct 15, 2023 at 12:27 PM.
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Old Nov 13, 2023 | 11:30 AM
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Originally Posted by Glaucio Poyares
Hey guys, I have a 2017 c300 coupe, but I'm not happy with the engine it has and also with the roar which is really bad for me, can anyone tell me if it's possible to swap it for the c43 engine and if it needs a lot of adaptation or not?
Is it worth it for the cost benefit or is it easier to change cars?
Roar? What roar?
It is certainly possible but depending on how cheap you can source the C 43 engine, that said, the 7G+ transmission might not work with the C 43 engine as well as I am not sure if the C 300 is a 4MATIC?
I would start looking for a used C 43 and hopefully that works out instead. If not C 450 is not bad either. Or you can even go with C 400 if you don't need the extra power. Those are pretty affordable nowadays.
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Old Nov 15, 2023 | 02:13 PM
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C300 coupe
Originally Posted by W205C43PFL
Roar? What roar?
It is certainly possible but depending on how cheap you can source the C 43 engine, that said, the 7G+ transmission might not work with the C 43 engine as well as I am not sure if the C 300 is a 4MATIC?
I would start looking for a used C 43 and hopefully that works out instead. If not C 450 is not bad either. Or you can even go with C 400 if you don't need the extra power. Those are pretty affordable nowadays.

Yes, my c300 is a 4 matic, by roar I meant the sound of the engine, even if you change the exhaust the sound it makes is still pretty ugly, but anyway, comparing the prices of used c43s, I think it's really worth it to change cars In fact, I'm already looking for some in the aesthetic configuration of my c300, which has red seats, and diamond white paint, which is a little harder to find, but I'll try, thanks for the information, friend.
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Old Nov 26, 2023 | 06:32 AM
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Originally Posted by Glaucio Poyares
Yes, my c300 is a 4 matic, by roar I meant the sound of the engine, even if you change the exhaust the sound it makes is still pretty ugly, but anyway, comparing the prices of used c43s, I think it's really worth it to change cars In fact, I'm already looking for some in the aesthetic configuration of my c300, which has red seats, and diamond white paint, which is a little harder to find, but I'll try, thanks for the information, friend.
You're welcome but ya if the four cylinder exhaust note on the C 300 is bothering you, C 450 is a good start. Actually C 400 isn't bad either but the exhaust is nothing special if you are in to that thing, at least being a six cylinder, it will still sound better than a four due to physics.
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Old Nov 27, 2023 | 05:33 PM
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How about tuning your engine? Stage 2? Changing your exhaust system to Armytrix including the down pipe. O installed Brabus power box and Armytrix. K&N air filter. Made a big difference.
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