Autothrottle takes too long to engage

[Michael Bonar]

I find that the autothrottle takes too long to engage on takeoff.  I set it to 250kts, and the speed climbs past 250kts to 280kts before it kicks in and drops back to 250kts.

[frank_m]

You have followed the takeoff procedure required for Autothrottle? MCDU programming, Thrust Levers, Flaps, Gear, Autopilot, Glareshield, ... For me it engages at 1000 Feet as foreseen.

Please show screenshots from the cockpit if the Autothrottle does not engage as foreseen.

[Farlis]

I'm confused. Autothrottle engages the second you push the thrust lever pass the clb detend. On the ground.