Крис Младенов 1.8 and 2.0 TSI/TFSI Oil Consumption Problems What causes 1.8 and 2.0 TSI/TFSI oil consumption? The 1.8 and 2.0 TSI/TFSI oil consumption problem is linked to the piston rings, pistons and, later, the connecting rods. Oil gets past the pistons int... 1.8TFSi 2.0 TFSI Guides for mechanics Guides for owners Oil Oil consumption oil consumption Dec 24, 2020