FBW V7.0 Reverse Thrust

[SierraHotel2873]

Look here where Reverse Thrust is expertly discussed and explained.

Auto brake, reverse throttle landing question

It’s not only noise. For the whole flight you are trying to save as much fuel as possible and you can easily eat up the few kilos you saved during the flight by applying max reverse thrust. Since reverse thrust isn’t even considered in the landing distance calculation (on dry runways) and max reverse doesn’t increase the lifetime of the engine, I can’t imagine that max reverse can be mandatory. Furthermore from the cabin it’s impossible to tell how much reverse thrust is being used.

Summary
Reverse Thrust not allowed in many European airports, Idle Thrust is to be used however.

Reverse thrust when used in conjunction with autobrake does not reduce breaking distance only the brakes will be less loaded/ heated.

Reverse thrust in general has no effect on dry runways when used with manual braking. Only on contaminated (wet, snow, ice) runways some reduction in braking distance can be observed but not as much as most people would suspect (see table at the end of the thread linked above).