Clutch Hydraulics

Instead of using a clutch cable to engage or disengage your engine from your transmission, hydraulic clutches are hydraulic mechanisms that force pressurized hydraulic fluid through to the clutch disengagement mechanism.
Despite hydraulic clutches being 'self-adjusting', the fluid level in the pool in your hydraulic clutch needs to be checked regularly and changed annually to remove impurities. Blockages and worn seals in the hydraulic system can cause a hard or stiff clutch.
If your hydraulic clutch is under-performing, then it is time for a replacement.

Drive-shaft made out of steel or aluminum; drive-shaft on rear wheel drive vehicles are responsible for delivering the power of the engine through the transmission output shaft through the differential in the axle to Constant Velocity joints (CV-joints) and onto the drive wheels. Front wheel drive vehicles use frontal drive-shaft usually referred to as half shafts.
If your car is bouncy, vibrating, clunking or squealing then you may have a drive-shaft problem.

Drive-shaft can also be damaged by curbing wheels or not replacing CV boots when worn. Replace the damaged or worn drive-shafts.