My 2005 black low mileage AMG E55 Wagon is beautiful to the eye and fun to drive. It is a nimble touring car and a great daily drive car-- with three seat rows or substantial "trunk" space. This Wagon is in excellent condition because I have treated it as a part of my family: all service requirements have been observed and then some. (Service records are available at Mercedes Benz.) The car has retro fit Bluetooth compatibility and internal radar detection. It is also fitted for LoJack. Not many of this model Mercedes were made and even fewer continue to exist. With less than 53,000 actual miles on the odometer, it has many mile to go. I hate to sell it, but just purchased a new Mercedes!
Right from the purchase this was a problem car. The entire fuel system ( diesel ) had to be replaced, a warranty item. Then the front ball joints had to be replaced. This happened twice. This vehicle had fancy seat controls all of which FAILED. Brakes were bad and had to be fixed. The fuel injectors ( diesel ) failed and required THREE REPLACEMENTS. Yes, the almighty Mercedes Benz can still makes lemons. And I met people who had similar issues.
Once these cars age, they eat parts like a kid eats candy. I bought mine a year ago at 90K miles and it has been a constant headache and very unreliable. Always heard MB cars are good to 300K miles, but doubt that now. I thought I was getting a bargain, but it's not. Most parts online are reasonably priced but take days to get; local parts stores charge as much as twice what online parts dealers get, but often don't have what I need. I do much of the work myself and luckily have a reliable independent shop that works on European cars to handle what I can't; if I didn't do much of it, I couldn't afford this car. These are complex cars and you pay extra for the experience it takes to fix them. Plus they can have hard-to-solve problems. For instance, I have a voltage "leak" that drains the battery if not driven in two days, and the shop can't figure it out. Mercedes dealers are notorious for charging seriously outrageous prices for parts and service (most car dealers make more money from service than new car sales), so get ready for a shock when they hand you a bill. My car performs very well, is super comfy and the tunes are awesome ... when I can drive it. I love it when it's working right but so glad I have a second car. In short, it's a real love/hate relationship. Buyer beware.
Go for the mechanical beauty of the naturally balanced Inline 6 with the iron block. At 18:1 compression it will outlast subsequent aluminum versions. Use Power Source Diesel Kleen once in a while and keep the injectors clean and lubricated. I have had my 2006 CDI for 145,000 miles and would not part with it EVER. I have driven 1,300 miles in one sitting (several times) and felt great afterwards. MPG is best with the right tires. I had Michelins and could easily get 40 mpg. Switched to other brands and it was a little harder to get that level of MPG. The car is VERY solid and well built. Get clear impact film for the driving lights to protect them from rocks. The rear seat is a little awkward to get out of. The cloth door jambs have worn a bit on the driver's side. Great stability. I upgraded the headlight bulbs to Phillips brightest and it was a great improvement. Suggestion for MBZ, let us adjust the high and low beams individually not as one set. Honestly I would put this against any other car for comfort, performance, efficiency and longevity.