warranty on a 2007 clio 197 gearbox

can anyone tell me what the warranty mileage or time span on a clio 197 2007 is, i'm not sure if the gearbox or the diff as I can hear a whining when I take my foot of the throttle and the car slows up,it does not crunch or struggle to go in any gear and the whine is there but very faint anyone any ideas thanks
 
thanks I've only had it 4 weeks I love it but it was worrying me ,but now I feel a bit better if your saying that's the norm thanks
 
thanks I've only had it 4 weeks I love it but it was worrying me ,but now I feel a bit better if your saying that's the norm thanks

they are just not a very good gearbox...all seem to have a whine/gear whine

as long as it goes in gear ok when warm/hot and doesn't crunch

also worth having the oil changed every 2yrs