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Jerky acceleration in my 2018 Civic CVT - is this normal?

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Mike T. · rep 0 · May 25, 1:51 AM · 1 replies · solved · Question

Vehicle: 2018 Honda Civic EX-T

I've noticed my 2018 Honda Civic EX-T with the CVT transmission sometimes hesitates or feels a bit jerky when accelerating from a stop, or when trying to speed up on the highway. It's not constant, but it's definitely noticeable and sometimes feels like a slight lurch.

I bought it used a few months ago, and it has about 60,000 miles on it. The previous owner seemed to keep up with maintenance, but I'm not sure about specific CVT fluid changes.

Is this a known issue with the Civic CVTs, or should I be worried about my transmission? Any TSBs for this kind of behavior?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 1:51 AM

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ClearTheCode admin answer:

It's understandable to be concerned about jerky acceleration in your 2018 Honda Civic EX-T with a CVT. While CVTs can feel different from traditional automatic transmissions, noticeable hesitation or lurching is usually not considered normal operation and could indicate an underlying issue.

Common Causes for CVT Hesitation/Jerking:

  1. CVT Fluid Degradation: Over time and mileage, CVT fluid can break down, losing its lubricating and friction properties. This can lead to slippage or inconsistent power transfer, causing hesitation. Honda recommends specific service intervals for CVT fluid changes.
  2. Software Calibration Issues: Sometimes, the transmission control module (TCM) or powertrain control module (PCM) software might have glitches or require updates to optimize CVT operation. Honda has released TSBs for various CVT calibration issues.
  3. Clutch Pack Wear: While CVTs don't have traditional gears, they utilize a launch clutch (or torque converter) and pulley systems. Wear in these components can lead to rough engagement.
  4. Sensor Malfunctions: Sensors like the transmission range sensor or speed sensors can provide incorrect data to the TCM, affecting shift points or engagement.

What You Can Do (DIY Checks):

  • Check Maintenance Records: If available, verify when the last CVT fluid change was performed. If it's overdue or unknown, a fluid change with genuine Honda HCF-2 fluid is a good first step.
  • Scan for Codes: Even if the check engine light isn't on, a pending or history code related to the transmission (e.g., P0700 series codes like P0730 - Incorrect Gear Ratio, or P0741 - Torque Converter Clutch Circuit Performance) might be present. A generic OBD-II scanner can help.

When to See a Shop:

  • Immediate Inspection: If the problem is consistent, worsening, or accompanied by warning lights (e.g., 'D' light flashing, Check Engine Light), take it to a Honda dealership or a reputable transmission specialist immediately.
  • CVT Fluid Change: If you're unsure about the fluid's condition or history, have a professional perform a CVT fluid change. Ensure they use the correct Honda HCF-2 fluid.
  • Software Updates: A dealership can check for and apply any relevant Technical Service Bulletins (TSBs) or software updates for your specific VIN that might address CVT performance issues.
  • Advanced Diagnostics: If a fluid change and software update don't resolve the issue, further diagnostics will be needed to inspect internal CVT components or sensor readings.
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