How to Cut the Coil Springs in an Audi A6

1. Jack up the car and place it safely and securely on jack stands. Remove all four wheels
2. Remove the rubber body plugs that cover the nuts for the front suspension with a screwdriver or pliers. Behind the nuts are four 13-mm nuts that are removed with a socket and a long extension. Disconnect the sway bar links and the inner pivot bolt on the lower front control arm. The latter is to provide clearance when removing the shock and spring assembly. Remove the lower shock bolt and remove the shock assembly.
3. At the rear remove the nut and bolt in the lower shock mount as well as the sway bar to subframe bolts. Loosen the inner control arm pivot bolts with an 18-mm and a 16-mm socket. Remove the upper nut and bolt from the upper control arm and pull the control arm out of the way. Remove the lower shock bolt and the two upper bolts that hold the shock assembly to the car. Pull the assembly out of the car, being careful not to damage the brake line.
4. Once all shocks are out of the car, use a high-quality spring compressor to compress the springs and remove the 18-mm not at the top of the shocks.
5. The fastest way to cut the springs is with an angle grinder that has a 4-inch cutoff wheel. You can also use a hacksaw. Carefully cut through all the springs, ensuring that you remove the exact same amount on each one to maintain a consistent ride height. It is best to start with a half coil or one coil. If the car is not low enough, you can always re-cut the springs. Paint the springs after they are cut to prevent them from rusting.
6. Reassemble the shock and spring assembly in the opposite order of removal and torque everything to the proper spec according to the manual.