Take a look at the buyers guide for the 560SEC coupe click
www.mbcoupes.com for some general hints about shopping for the cars, some of the suggestions apply to the sedans as well. They are well built cars, and safe but look for one that has up do date records if possible, and a prepurchase inspection is recommended before you buy one.
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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...
1995 E 420, 170k "The Red Plum" (sold)
2015 BMW 535i xdrive awd
Stage 1 DINAN, 6k, <----364 hp
1967 Mercury Cougar, 49k
2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive
(sold)