1988 Mercedes-Benz 560SL

The Mercedes-Benz 560SL (R107 chassis) is generally a robust car, but like any classic, it has some known weak points you should keep an eye on:

Engine & Drivetrain

• Timing Chain & Tensioners – A critical maintenance item. Early models (1981-1984) had single-row chains that are prone to stretching; later cars got dual-row chains which are more durable but still need regular inspection.
• Hydraulic Lifter Noise – Ticking from the top of the engine often indicates worn hydraulic tappets/rocker arms. This is usually caused by infrequent oil changes or incorrect oil grade. Can cost $2,000-3,000 to fix.
• Exhaust Manifold Gasket Leaks – Common on V8 models; cracked manifolds around the EGR valve area are typical. A heat-affected ticking sound at startup that quiets as the motor warms up is the telltale sign.
• Camshaft Wear – Can occur if regular maintenance has been neglected. Listen for ticking that could indicate this.

Rust (The Big One!) The R107 is notorious for rust. Key areas to inspect:

• Bulkhead/firewall (leads to damp footwells inside)
• Above the headlamps, hood, and trunk lid
• Rear wheel arches, door bottoms, sills
• Rear valances and bumper corners (they trap moisture)
• Floors and trunk/boot floor

Cooling System

• Radiator leaks/clogs – The radiators are vulnerable to stone damage and core blockage. These engines run hot, so cooling system maintenance is critical.
• Water pump failures
• Aging hoses and thermostat issues

Electrical & Accessories

• Headlamps – Dimmer over time due to tarnished reflectors or cracked lenses
• Headlamp Washers – Often corroded or inoperative
• Cruise Control – Control box failures are common
• Fuel Pump & Relays – Can fail with age
• ABS Sensors – Can cause warning lights, especially on the 300SL, but also affects 560SLs

Suspension & Steering

• Vague Steering – Worn steering box and steering damper
• Suspension Rattles – Worn anti-roll bar links, shock absorbers, bushings

Body & Interior

• Soft Top/Hard Top Seals – Worn seals cause wind noise and water leaks
• Dash Pad Cracking – Very common
• Damp Boot/Trunk – Spare wheel well collects water from poor seals or rear lamp leaks
• Window & Mechanism Woes – Cables and regulators can fail

Fuel System

• Rough running, flat spots, or misfiring often stem from injection system issues that need tuning or component replacement.

The good news? These are well-documented cars with excellent parts availability and strong specialist support. A well-maintained 560SL is a joy to own. Just be sure to buy on condition, not just low mileage, and get a thorough pre-purchase inspection from a Mercedes specialist.

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