For starters, it's a W140, which most cheapskate dieselheads will take to be a bad thing. Second, it came with the 3.5 liter rod bender engine. Not all of them bend rods, but many do. I personally wouldn't walk away, I'd run.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.