$$ to maintain. Expect to spend a few grand a year and with the V12 there's two of everything.

Two wiring harnesses- $2K each

Two engine management systems- another $2K each

Two fuel 'putes - a few grand each

Two air mass sensors, 4 cats, not to mention the expensive W140 door assist, pricey window regulators that die due to double pane glass, expensive A/C repairs...

and with a spotty service history? I'd pass.