Owners repeatedly frame the R129 as built during an era of engineer-led Mercedes, praising tank-like solidity and quiet, smooth cruising. Several rate it above much newer SLs on build quality, and sellers cite the absence of complex later technology (no R230-style ABC active suspension) as a reason it is a strong long-term hold.
Over-engineering and build quality reputation
Mercedes-Benz SL (R129) · driving