Cost and timing of the hydraulic top job

Quoted costs range widely: a full set of TopHydraulics cylinders around $2,500, a complete job around $2,850 all-in, an independent shop $3,000-$4,000, versus roughly $9,000 at Mercedes. Owners stress the cylinders fail by time rather than mileage, so even low-mile cars with a good PPI can leak shortly after.