Audi insists that on models fitted with an intermediate plate between the oil pump/balancer shaft housing and the engine block, the plate must be renewed when the oil pan is removed. To begin removal, apply the handbrake, jack up the front of the vehicle, and support it on axle stands. Release the fasteners, remove the engine undertray, and detach the undertray bracket. Position a container beneath the oil pan, unscrew the drain plug, and drain the engine oil, cleaning the plug and renewing the washer if necessary before refitting and tightening it. Remove the dipstick, auxiliary drivebelt, and disconnect the oil temperature sensor wiring plug from the base of the oil pan. Detach the refrigerant support pipe and position the air conditioning compressor to one side without disconnecting the refrigerant pipes. Unbolt the stop bracket from the front of the engine, unclip the vehicle height sensor actuator rod if applicable, and detach the inboard clamps from the front anti-roll bar. Cut the plastic cable ties to detach the starter motor cables, unscrew and remove the nuts from the bottom of each engine mounting, and remove the engine top cover along with the inlet ducting. Connect a suitable hoist to the engine and raise it carefully, then mark the fitted position of the subframe, position a workshop trolley jack to take the weight, and lower the front subframe after undoing the bolts. Gradually unscrew and remove the oil pan bolts in a diagonal pattern, noting that on manual transmission models, the two rear oil pan bolts are accessed through a cut-out in the flywheel. If the oil pan is stuck, tap it gently with a mallet to free it. For refitting, thoroughly clean the contact faces of the oil pan, using a rotary wire brush to remove sealant. Refit the oil pan, tightening the retaining bolts hand-tight initially, ensuring that if the engine is out of the car, the rear edge of the oil pan overhangs the rear edge of the cylinder block by 0.8 mm. Progressively tighten the oil pan bolts in a diagonal pattern to the specified torque, allowing at least 30 minutes for the intermediate plate sealant to set before filling the engine with oil. The remaining refitting procedure is a reversal of removal, ensuring that all nuts and bolts are tightened to the specified torque, and finally, fill the engine with the correct quantity of oil.