How do you replace rear coil springs on a Mazda 3?

To replace the rear coil springs on a Mazda 3, start by safely lifting the rear of the vehicle and securing it on jack stands. Remove the rear wheels and detach the shock absorbers from the lower mounting point. Then, use a spring compressor to safely compress the coil springs and remove the lower control arm bolts to release the springs. Install the new springs in the reverse order, ensuring all components are properly torqued before reassembling and lowering the vehicle.