2018 C43 AMG - Can You Use E85 Fuel?
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2018 C43 AMG - Can You Use E85 Fuel?
Hi All!
I recently traded in my W204 2012 C300 4Matic Sport sedan for a W205 2018 C43 AMG sedan and I am absolutely in love with it.
One thing that I do miss from the C300 though, it was able to run E85 which has a significantly lower price at the pump.
I don't see this capability listed in the owners manual or on the gas cap/gas door decal of my C43 AMG so I have not tried it.
Does anyone here have any experience with using E85 in their C43? It is something that is supported without any aftermarket modifications or is it a no-go?
I recently traded in my W204 2012 C300 4Matic Sport sedan for a W205 2018 C43 AMG sedan and I am absolutely in love with it.
One thing that I do miss from the C300 though, it was able to run E85 which has a significantly lower price at the pump.
I don't see this capability listed in the owners manual or on the gas cap/gas door decal of my C43 AMG so I have not tried it.
Does anyone here have any experience with using E85 in their C43? It is something that is supported without any aftermarket modifications or is it a no-go?
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Joined: Oct 2019
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C43
No, you cannot run straight e85 in a stock c43. You can run up to about e30 (blending 91+ octane with a few gallons of e85). I have been running such a blend in my stage 2 tuned c43 for approximately 2 years without issue. To go any higher than e30 you will need a new high pressure and low pressure fuel pump and a tune for proper operation. I am not aware of anyone on this board running above about e50 with this setup.
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Joined: Sep 2021
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2017 c43 AMG
No, you cannot run straight e85 in a stock c43. You can run up to about e30 (blending 91+ octane with a few gallons of e85). I have been running such a blend in my stage 2 tuned c43 for approximately 2 years without issue. To go any higher than e30 you will need a new high pressure and low pressure fuel pump and a tune for proper operation. I am not aware of anyone on this board running above about e50 with this setup.
I have a stage 2 from eurocharged too, do i need to ask them for a new tune to run a few gallons of e85 or can i just throw some in and see a difference in my butt dyno?
they’re closed today so i can’t call and ask till Monday
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C43
You can, but it depends on how taxed the HPFP is with the stage 2 tune you currently have. If it was already running lean on the top end with 91/93 pump gas, it will be further leaned out with an e85 mix. The only sure fire way to tell is if you have a wideband air/fuel gauge (like AEM) or a dyno session. My advice is to hold off until you have discussed the issue with your tuner.
Newbie
Joined: Sep 2021
Posts: 12
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2017 c43 AMG
You can, but it depends on how taxed the HPFP is with the stage 2 tune you currently have. If it was already running lean on the top end with 91/93 pump gas, it will be further leaned out with an e85 mix. The only sure fire way to tell is if you have a wideband air/fuel gauge (like AEM) or a dyno session. My advice is to hold off until you have discussed the issue with your tuner.
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Joined: Jan 2022
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2017c43
No, you cannot run straight e85 in a stock c43. You can run up to about e30 (blending 91+ octane with a few gallons of e85). I have been running such a blend in my stage 2 tuned c43 for approximately 2 years without issue. To go any higher than e30 you will need a new high pressure and low pressure fuel pump and a tune for proper operation. I am not aware of anyone on this board running above about e50 with this setup.
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C450 amg
No, you cannot run straight e85 in a stock c43. You can run up to about e30 (blending 91+ octane with a few gallons of e85). I have been running such a blend in my stage 2 tuned c43 for approximately 2 years without issue. To go any higher than e30 you will need a new high pressure and low pressure fuel pump and a tune for proper operation. I am not aware of anyone on this board running above about e50 with this setup.
Can I run any sort of ethanol on a stock c450’s fuel pump maybe like e30 without anything going wrong if I’m stage 2+?
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