Pre-purchase report

1987 Mercedes-Benz 560SL (R107)

43,000 miles · asking $11,000 · 5.6L M117 V8

6 known failure points for this generation · cost data pending verification

The final and most powerful US-market R107 roadster, a long-lived boulevard cruiser built like a bank vault. Money goes into deferred maintenance on aging rubber, timing components, and the complex fuel injection, plus rust remediation on cars that lived outside.

AI-drafted profile

This failure-mode list was drafted by AI and cross-checked against this car’s real NHTSA complaint data. It has not yet been verified by our mechanics or owners, and it deliberately shows no cost figures: we never publish a dollar amount we can’t source. Own one? Your cost submissions below are what turn this into a verified teardown.

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What this car is known for

Likely due nowcost pending verification

KE-Jetronic fuel injection faults

What you’ll notice: Hard starting, rough idle, hesitation, or stalling when warm.

The mechanical/electronic CIS injection relies on aging fuel distributor, warm-up regulator, and OVP relay that degrade with time and heat.

Condition-driven: inspect, don't assume

AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it

Likely due nowcost pending verification

Cooling system degradation

What you’ll notice: Overheating in traffic, coolant leaks at hoses or radiator end tanks.

Plastic-tank radiators, aging hoses, and tired auxiliary fan and viscous clutch all fail with age on a heat-sensitive V8.

Condition-driven: inspect, don't assume

AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it

Likely due nowcost pending verification

Soft top and frame issues

What you’ll notice: Torn or shrunken canvas, sticky latches, worn rear window, binding folding mechanism.

These tops are decades old and the pivot points and latches wear, while original glass rear windows crack or cloud.

Condition-driven: inspect, don't assume

AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it

Likely due nowcost pending verification

Central locking vacuum system faults

What you’ll notice: Doors, trunk, or fuel door lock erratically or not at all.

The pneumatic central locking uses vacuum lines and a pump that crack and leak with age.

Condition-driven: inspect, don't assume

AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it

Inspect for itcost pending verification

Structural rust

What you’ll notice: Bubbling at rockers, jack points, floor pans, spare tire well, and around the windshield frame.

R107 bodies rust in classic spots when drainage channels clog and cars sit outdoors, and repair on structural areas is costly.

Condition-driven: inspect, don't assume · applies only if found

AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it

Down the roadDeal-shapercost pending verification

Timing chain and guide wear

What you’ll notice: Rattle on cold start, chain slap, or in worst cases a jumped tooth and rough running.

The M117 uses a single-row timing chain in these years, and stretched chains with worn plastic guides and tensioner are a known age-related failure.

Typical window: 80k-150k miles

AI-drafted, unverified · cross-checked against NHTSA complaints · submit what you paid below to verify it

PPI checklist

AI-drafted for this chassis. Hand it to your inspector.

  • 01Cold-start the engine and listen for timing chain rattle before it quiets down
  • 02Pull carpets and inspect floor pans, jack points, and rocker panels for rust and prior filler
  • 03Check the spare tire well and battery tray area for corrosion
  • 04Inspect both hard top and soft top: canvas condition, rear window clarity, frame operation, and that a hard top stand exists
  • 05Verify warm restart behavior and idle quality to gauge KE-Jetronic health
  • 06Feel the timing chain tensioner area and check service records for chain replacement
  • 07Test central locking on all doors, trunk, and fuel filler for vacuum function
  • 08Inspect the radiator, hoses, and check for coolant seepage and fan clutch play

Ask the seller

  • ·Has the timing chain, guides, and tensioner ever been replaced, and at what mileage?
  • ·Was the car garaged, and can you show the floors and jack points?
  • ·Do you have both the hardtop and softtop, plus the hardtop storage stand?
  • ·When was the fuel injection last serviced or tuned, and does it start cleanly hot and cold?

What owners reported to NHTSA

0 owner complaints and 0 recalls on file for the 1987 MERCEDES-BENZ 560SL (public federal data).

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