There is a transmission grinding sound when shifting in all gears. The reason is because the clutch is not releasing fully.
Possible cause of transmission grinding sound
Clutch is Not Releasing Fully
If the transmission grinding occurs when shifting into all gears then the most likely cause of the problem is that the clutch is not fully releasing. This kind of problem affects the meshing of all gears even when the clutch pedal is fully depressed. The purpose of the clutch is to disconnect the engine from the transmissions to allow the driver to change gears. If the clutch is not fully releasing, the gears will grind when shifting into gears.
Bring the car to a reputable car repair shop specialized with manual transmission repair. You are lucky if your car is under warranty. Ask the mechanic to check on the clutch linkage, it may only need a simple adjustment to fix the problem of transmission grinding since it is also a possible cause why the clutch is not fully releasing. If the mechanic recommends that it is necessary to tear down the transmission, don not agree without seeking opinions from other shops.
