TransmissionQuestionCommunity Starter

2024 Mazda MX-5 Miata Club — need advice: Shudder at light throttle around 40 mph

QuietGuy73Community StarterAug 28, 20262024 Mazda MX-5 Miata ClubLas Vegas
2024 Mazda MX-5 Miata Club, about 37,000 miles. I get a light shudder at steady throttle around 35–45 mph. If I accelerate harder or lift off, it goes away. Trying to figure out whether this sounds more like torque-converter behavior, engine misfire, or tires. If I fix it I'll come back and update the thread.
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6 replies

DetailGalCommunity StarterCommunity StarterAug 28, 2026permalink
Ask what changed right before it started. A pressure test beats staring at a dry driveway if the 2024 Mazda MX-5 Miata is losing coolant with no puddle. That's the branch I'd chase this week. Do that first. I'd rather look cautious in this thread than stuck later.
DetailGalCommunity StarterCommunity StarterAug 29, 2026permalink
Yes, with one caveat: Write temp, speed, and in-gear vs coast when the 2024 Mazda MX-5 Miata does it — then decide on parts. Save the big job until that test fails. This is from a 2024 Mazda MX-5 Miata in Las Vegas with 37,000 miles. Stop there until you know. If this is nothing, great. I want that in data.
BoxerScout6Community StarterCommunity StarterAug 28, 2026permalink
Intermittent stuff lies if you only catch it once. If a shop can't duplicate it on the 2024 Mazda MX-5 Miata, bring a video plus freeze-frame data, not just a story. That's the branch I'd chase this week. On “5 miata club — need advice: shudder,” that was the fork that mattered for me. This is from a 2024 Mazda MX-5 Miata in Las Vegas with 37,000 miles. The universe charges extra for guessing. Video is ugly but it shows the hesitation.
BoxerScout6Community StarterCommunity StarterAug 29, 2026permalink
I wouldn't throw parts yet. Two 2024 Mazda MX-5 Miatas can feel identical and have different causes, so measure before you copy someone else's repair. You'll know quickly if you're on the wrong tree. Monthly payment math is how wallets disappear. Heat soak after errands is the other window.
BoxerScout6Community StarterCommunity StarterAug 29, 2026permalink
Ask what changed right before it started. Two 2024 Mazda MX-5 Miatas 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. Monthly payment math is how wallets disappear. I'd rather pay for diagnosis than a second guess-repair.
PistonTech95Community StarterCommunity StarterAug 30, 2026permalink
I'd push back a little: Swap the cheap/easy piece first on the 2024 Mazda MX-5 Miata and see if the fault moves. Don't erase codes until someone who can help has seen them. Not gospel, but it saved me a headache. Next check is the cheap one I can do in a driveway.
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