Question: Weird vibration only between 62–70 mph

This is usually cheaper to test than to guess. Two 2023 Mercedes-AMG C43s can feel identical and have different causes, so measure before you copy someone else's repair. That's the branch I'd chase this week. This is from a 2023 Mercedes-AMG C43 in South Florida. Just my two cents from doing this recently. I'd rather look cautious in this thread than stuck later.

I wouldn't throw parts yet. A pressure test beats staring at a dry driveway if the 2023 Mercedes-AMG C43 is losing coolant with no puddle. That's the branch I'd chase this week. Not gospel, but it saved me a headache. I've seen both outcomes, which is why I'd test instead of assume. If that fails I'll eat the diagnostic fee.

Ask what changed right before it started. Two 2023 Mercedes-AMG C43s can feel identical and have different causes, so measure before you copy someone else's repair. If the cheap test changes it, stop and reassess. This is from a 2023 Mercedes-AMG C43 in South Florida. Parts cannon is a personality type I try to avoid. Trying not to diagnose from the couch.

If it were in my driveway, write temp, speed, and in-gear vs coast when the 2023 Mercedes-AMG C43 does it — then decide on parts. Save the big job until that test fails. This is from a 2023 Mercedes-AMG C43 in South Florida. Just my two cents from doing this recently. Parking it somewhere I can hear it better next time.

Intermittent stuff lies if you only catch it once. Write temp, speed, and in-gear vs coast when the 2023 Mercedes-AMG C43 does it — then decide on parts. Don't erase codes until someone who can help has seen them. On “weird vibration only between 62–70 mph,” that was the fork that mattered for me. I'd want that in writing, not as a promise. This is me being the wet blanket on purpose.

Start with the test that can prove you wrong. Two 2023 Mercedes-AMG C43s can feel identical and have different causes, so measure before you copy someone else's repair. If the cheap test changes it, stop and reassess. This is from a 2023 Mercedes-AMG C43 in South Florida. If it doesn't change the out-the-door or the repair estimate, it's noise. Wrote this up on my lunch break.

This is usually cheaper to test than to guess. If a shop can't duplicate it on the 2023 Mercedes-AMG C43, bring a video plus freeze-frame data, not just a story. That's the branch I'd chase this week. This is from a 2023 Mercedes-AMG C43 in South Florida. Take it or leave it — that's what I'd do. I'll poke at it this weekend.

Ask what changed right before it started. A pressure test beats staring at a dry driveway if the 2023 Mercedes-AMG C43 is losing coolant with no puddle. That's the branch I'd chase this week. If it doesn't change the out-the-door or the repair estimate, it's noise. I'd rather look cautious in this thread than stuck later.

I wouldn't throw parts yet. Loaded-suspension checks on the 2023 Mercedes-AMG C43 catch play that a wheels-hanging inspection misses. That's the branch I'd chase this week. I'd want a dollar figure or a measured spec, not 'should be fine.' Worth doing even if the car feels fine right now. I keep a notes app thread for this now.

If it were in my driveway, move a coil or plug on the 2023 Mercedes-AMG C43 if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. Verbal 'we'll take care of it' is not a plan. Next check is the cheap one I can do in a driveway.

I'd want a measurement, not a hunch. Loaded-suspension checks on the 2023 Mercedes-AMG C43 catch play that a wheels-hanging inspection misses. You'll know quickly if you're on the wrong tree. This is from a 2023 Mercedes-AMG C43 in South Florida. Parts cannon is a personality type I try to avoid. I'd sleep better after that step, even if it finds nothing. Parking it somewhere I can hear it better next time.

Ask what changed right before it started. A pressure test beats staring at a dry driveway if the 2023 Mercedes-AMG C43 is losing coolant with no puddle. Don't erase codes until someone who can help has seen them. Verbal 'we'll take care of it' is not a plan. I'm keeping receipts and dates in one folder.

I wouldn't throw parts yet. Capture voltage while the 2023 Mercedes-AMG C43 is actually failing — after it restarts you've lost the clue. You'll know quickly if you're on the wrong tree. Write the result down so the next test isn't a repeat of the last one. Trying not to diagnose from the couch.

I went back under the 2023 Mercedes-AMG C43 and it only happens after a heat soak, not on a cold start. I'd rather look cautious in this thread than stuck later.

Intermittent stuff lies if you only catch it once. Get a real battery/charging test on the 2023 Mercedes-AMG C43, not just resting voltage, before blaming a module. Save the big job until that test fails. On “weird vibration only between 62–70 mph,” that was the fork that mattered for me. This is from a 2023 Mercedes-AMG C43 in South Florida. Just my two cents from doing this recently. This is the filter I use when the thread starts repeating itself. Not driving it hard until I know more.

Log the conditions before you spend. Two 2023 Mercedes-AMG C43s can feel identical and have different causes, so measure before you copy someone else's repair. Save the big job until that test fails. On “weird vibration only between 62–70 mph,” that was the fork that mattered for me. Do that first. I'll poke at it this weekend.

Tried a second charger / second scan and the story on the 2023 Mercedes-AMG C43 didn't change. If the story changes I'll post the new data.

Ask what changed right before it started. If a shop can't duplicate it on the 2023 Mercedes-AMG C43, bring a video plus freeze-frame data, not just a story. That's the branch I'd chase this week. That's the whole play. Wrote this up on my lunch break.

Start with the test that can prove you wrong. Two 2023 Mercedes-AMG C43s can feel identical and have different causes, so measure before you copy someone else's repair. If the cheap test changes it, stop and reassess. This is from a 2023 Mercedes-AMG C43 in South Florida. Keep sale price, fees, and rate as three different conversations. This is the version I'd tell a friend.

OP here — recorded a short video and noted speed, temp, and whether it was in gear. If that fails I'll eat the diagnostic fee.

I'd want a measurement, not a hunch. Two 2023 Mercedes-AMG C43s can feel identical and have different causes, so measure before you copy someone else's repair. That's the branch I'd chase this week. Just my two cents from doing this recently. I'd sleep better after that step, even if it finds nothing. If the story changes I'll post the new data.