Why is my car shaking when I accelerate?

*ONLY upon acceleration* ... With no engine misfire... Suspect worn front axle , inner tripod (cv joint).. Another possibility is 'torque steer' from worn engine/transmission mounts... *Experenced mechanic* should be able to confirm, with test drive! .. Worn inner cv joint will give wobbling up/down sensation in the car when accelerating .. Torque steer will give a wandering left/right sensation when accelerating .. Engine misfire will give a jerking sensation and is more pronounced under 'light' acceleration and going up a slight grade... Good luck with the diagnosis!