Symptom guide
Car Shakes When Accelerating
Common causes of vibration under acceleration, from misfires to axle and mount problems.
Quick answer
Acceleration-only shaking often points to engine misfire, worn CV axles, damaged engine mounts, or drivetrain vibration.
Most likely causes
- Engine misfire under load
- Worn CV axle
- Broken engine or transmission mount
- Unbalanced or damaged tire
- Fuel delivery problem
Basic driver checks
- Notice whether the check engine light flashes.
- Compare shaking at idle, cruising, and acceleration.
- Listen for clicking when turning.
- Look for torn CV boots near the front wheels.
DIY diagnostic path
- Scan for misfire codes before replacing suspension parts.
- Inspect tires for bulges or separated tread.
- Check engine movement by shifting from Park to Drive with brakes held, only if safe.
- Do not crawl under a car supported only by a jack.
Common mistakes
- Balancing tires when the vibration only happens under engine load
- Ignoring a flashing check engine light
- Replacing spark plugs without checking coils and codes
What to tell the mechanic
Explain the speed and throttle condition when vibration appears. Mention whether it happens while turning or only under load.