32 replies

BatteryRoadie551Community StarterCommunity StarterAug 19, 2026permalink
Useful. I'll report back after I verify that on my 2018 Mercedes-AMG C63. Doing the boring step first on purpose.
BatteryRoadie551Community StarterCommunity StarterAug 19, 2026permalink
I parked the 2018 Mercedes-AMG C63 and wrote down what I already tested so I'm not repeating myself. If this is nothing, great. I want that in data.
RustBeltWeekendCommunity StarterCommunity StarterAug 20, 2026permalink
That's a good start, but I wouldn't stop there. Verify the cheap/easy branch on the 2018 Mercedes-AMG C63 before a big repair or a big spend. That's where I'd start. This is from a 2018 Mercedes-AMG C63 in Boston. Take it or leave it — that's what I'd do. This is me being the wet blanket on purpose.
TrackCamper66Community StarterCommunity StarterAug 19, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2018 Mercedes-AMG C63 before a big repair or a big spend. That's where I'd start. Stop there until you know. This is me being the wet blanket on purpose.
TireGal160Community StarterCommunity StarterAug 19, 2026permalink
Write down what you already tried. A second data point from another 2018 Mercedes-AMG C63 owner helps more than a generic diagnosis. Then you'll know the next fork. If it doesn't change the out-the-door or the repair estimate, it's noise. If this is nothing, great. I want that in data.
V8BuilderCommunity StarterCommunity StarterAug 19, 2026permalink
Write down what you already tried. A second data point from another 2018 Mercedes-AMG C63 owner helps more than a generic diagnosis. I'd do that before spending real money. Did the worksheet show tax yet? This is the version I'd tell a friend.
TireGal160Community StarterCommunity StarterAug 19, 2026permalink
Owner notes beat generic advice here. On the 2018 Mercedes-AMG C63 in Boston, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “amg c63 — brake fluid is old,” that was the fork that mattered for me. If it doesn't change the out-the-door or the repair estimate, it's noise. Wrote this up on my lunch break.
RotorCamperCommunity StarterCommunity StarterAug 19, 2026permalink
Write down what you already tried. A second data point from another 2018 Mercedes-AMG C63 owner helps more than a generic diagnosis. I'd do that before spending real money. Take it or leave it — that's what I'd do. If this is nothing, great. I want that in data.
BatteryRoadie551Community StarterCommunity StarterAug 20, 2026permalink
Following up on amg c63 — brake fluid is old: still happening, but I have better notes now. That's my plan before I call anyone.
LongMilesWrench19Community StarterCommunity StarterAug 19, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2018 Mercedes-AMG C63, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. Stop there until you know. I'm in no rush to be a hero on it.
RoadNerdCommunity StarterCommunity StarterAug 20, 2026permalink
Asking because it changes the advice: If it still isn't clear on the 2018 Mercedes-AMG C63, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. This is from a 2018 Mercedes-AMG C63 in Boston. Write the result down so the next test isn't a repeat of the last one. Make the next action something you can finish this week. I'm in no rush to be a hero on it.
BatteryRoadie551Community StarterCommunity StarterAug 19, 2026permalink
Useful. I'll report back after I verify that on my 2018 Mercedes-AMG C63. I'm in no rush to be a hero on it.
LongMilesWrench19Community StarterCommunity StarterAug 19, 2026permalink
Owner notes beat generic advice here. On the 2018 Mercedes-AMG C63 in Boston, I'd fix the thing you'll notice every day before chasing spec-sheet extras. I'd do that before spending real money. On “amg c63 — brake fluid is old,” that was the fork that mattered for me. That's the whole play. Wrote this up on my lunch break.
RoadNerdCommunity StarterCommunity StarterAug 19, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2018 Mercedes-AMG C63 before a big repair or a big spend. I'd do that before spending real money. Write the result down so the next test isn't a repeat of the last one. Doing the boring step first on purpose.
RotorCamperCommunity StarterCommunity StarterAug 19, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2018 Mercedes-AMG C63, a specialist hour can be cheaper than another round of parts. That's where I'd start. Take it or leave it — that's what I'd do. If the story changes I'll post the new data.
CommuterDetailerCommunity StarterCommunity StarterAug 20, 2026permalink
Owner notes beat generic advice here. On the 2018 Mercedes-AMG C63 in Boston, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “amg c63 — brake fluid is old,” that was the fork that mattered for me. Time, temperature, and whether it's in gear are the notes that actually help a shop. If your situation is the opposite, ignore me. That's my plan before I call anyone.
BatteryRoadie551Community StarterCommunity StarterAug 20, 2026permalink
Thanks — that narrowed it. I'm going to try the simpler check on the 2018 Mercedes-AMG C63 first. I'd rather look cautious in this thread than stuck later.
EVMomCommunity StarterCommunity StarterAug 20, 2026permalink
Write down what you already tried. A second data point from another 2018 Mercedes-AMG C63 owner helps more than a generic diagnosis. That's where I'd start. This is from a 2018 Mercedes-AMG C63 in Boston. I'd want that in writing, not as a promise. If this is nothing, great. I want that in data.
BatteryRoadie551Community StarterCommunity StarterAug 20, 2026permalink
Useful. I'll report back after I verify that on my 2018 Mercedes-AMG C63. Might be overthinking it, but I'd rather overthink than overspend.
HybridDriver928Community StarterCommunity StarterAug 20, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2018 Mercedes-AMG C63 before a big repair or a big spend. I'd do that before spending real money. Keep sale price, fees, and rate as three different conversations. I've seen both outcomes, which is why I'd test instead of assume. This is me being the wet blanket on purpose.
GarageMechanicish119Community StarterCommunity StarterAug 20, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2018 Mercedes-AMG C63, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. That's the whole play. Make the next action something you can finish this week. I'm keeping receipts and dates in one folder.
HybridShopperCommunity StarterCommunity StarterAug 21, 2026permalink
Quick add on that: On the 2018 Mercedes-AMG C63 in Boston, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “amg c63 — brake fluid is old,” that was the fork that mattered for me. Happy to compare notes if your setup is different. If your situation is the opposite, ignore me. That's my plan before I call anyone.
BatteryRoadie551Community StarterCommunity StarterAug 20, 2026permalink
I parked the 2018 Mercedes-AMG C63 and wrote down what I already tested so I'm not repeating myself. I'll update if anything new shows up.
CanyonSeller690Community StarterCommunity StarterAug 20, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2018 Mercedes-AMG C63, a specialist hour can be cheaper than another round of parts. That's where I'd start. This is from a 2018 Mercedes-AMG C63 in Boston. Stop there until you know. If the story changes I'll post the new data.
BatteryRoadie551Community StarterCommunity StarterAug 20, 2026permalink
Useful. I'll report back after I verify that on my 2018 Mercedes-AMG C63. I'll update if anything new shows up.
TrackGeek594Community StarterCommunity StarterAug 21, 2026permalink
Quick add on that: A second data point from another 2018 Mercedes-AMG C63 owner helps more than a generic diagnosis. I'd do that before spending real money. Learned this the expensive way on a previous car. This is the version I'd tell a friend.
RustBeltWeekendCommunity StarterCommunity StarterAug 20, 2026permalink
Write down what you already tried. A second data point from another 2018 Mercedes-AMG C63 owner helps more than a generic diagnosis. Then you'll know the next fork. Just my two cents from doing this recently. If this is nothing, great. I want that in data.
RoadNerdCommunity StarterCommunity StarterAug 20, 2026permalink
Owner notes beat generic advice here. On the 2018 Mercedes-AMG C63 in Boston, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “amg c63 — brake fluid is old,” that was the fork that mattered for me. Write the result down so the next test isn't a repeat of the last one. I'd rather look cautious in this thread than stuck later.
CommuterDetailerCommunity StarterCommunity StarterAug 20, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2018 Mercedes-AMG C63, a specialist hour can be cheaper than another round of parts. That's where I'd start. Keep sale price, fees, and rate as three different conversations. That's coming from doing this as an owner, not a shop. If the story changes I'll post the new data.
HybridShopperCommunity StarterCommunity StarterAug 20, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2018 Mercedes-AMG C63, a specialist hour can be cheaper than another round of parts. That's where I'd start. Happy to compare notes if your setup is different. A day of patience here is cheaper than a wrong part. I'm in no rush to be a hero on it.
TireGal160Community StarterCommunity StarterAug 21, 2026permalink
I hear you, though I'd still want a second check. On the 2018 Mercedes-AMG C63 in Boston, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “amg c63 — brake fluid is old,” that was the fork that mattered for me. I'd want a dollar figure or a measured spec, not 'should be fine.' That's my plan before I call anyone.
HybridShopperCommunity StarterCommunity StarterAug 20, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2018 Mercedes-AMG C63 before a big repair or a big spend. That's where I'd start. Post the numbers (or the code) and people can get more specific. Your commute and mine probably aren't the same, but the test still applies. This is me being the wet blanket on purpose.
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