The 300TD wagon is one of the most sought-after W123 variants, praised as an indestructible, classy estate car. A key mechanical distinction is the wagon's integral hydraulic self-leveling suspension (SLS) driven by a pump unique to the TD, which owners warn is lost if the rear is converted to conventional springs.
Wagon (S123) demand and self-leveling suspension
Mercedes-Benz W123 · market