Atari-kid86 & Suwanee,
I've owned quite a few old Mercedes diesels over the years. I bought my first in 1987, a 1968 200D with the little fins, was an awesome car. Years later (90's) we bought used 300D sedans & wagons for cheap dependable commuter cars. We bought them well used with hundreds of thousands of miles & decades on them. I used to tinker with them adjusting valves, changing oil, etc.. They saved us a lot of money over the years. I ended up junking most of them, even though they ran, it was just easier to replace with another when rust or other peripheral items got to bad. They *were* surprisingly good in the snow with studded snow tires, too. They are just all around awesome cars with drive trains last seemingly forever.
I bought my wife an 06 Jeep Liberty TURBO DIESEL new when they came out. Mercedes owned Chrysler /Jeep a couple of years and experimented with putting their diesel engines in to the Liberty & Grand Cherokee. We love our liberty, has 147K on it now and runs like a champ, surprisingly fast too. This is one we plan on keeping for 20 years or more.
I drive a 98 Lincoln Navigator with 112K miles, a big pig on gas but need it to haul all the big toys. I'm not pissing away $60K for a new one just because mine is long in the tooth.
If I was in the position to throw money away at a new car today, I'd buy a new Caddy, their new Xts sedan. I always loved Caddys ever since my father bought one used in 1975, an all white 1964 sedan Deville with the short fins, man I loved that car and it lighted my fire for big Caddys & Lincolns.
My very first car in 1985 was a long black 1977 Lincoln Town Car, one huge boxy lead sled of a car. It was my favorite car. That car was so posh with it's pillowed leather interior, oval opera windows in the back, with a ride like it was a magic carpet. I still look and drool at the survivors on Ebay Motors from time to time.