Bought an '08 Bluetec with 15,500 miles in March 2010. Excellent vehicle. Smooth, quiet, excellent mileage, plenty of power. Very smooth shifting vehicle. This is my 3rd Mercedes, by far the best (previous was an '83 300td (junk), e300 (pretty good). I have owed Lexus (IS300) and 5 series BMW and like this better. Many other vehicles along the way and this is the best. Package 2 with keyless go, fold down rear seat and the full moon roof. 19 miles one way to work, mostly freeway with some stop and go downtown and I see 36 mpg routinely. Not a big NAV user but have found this nav system to be a challenge. Logic is not intuitive but you do figure it out with some focused effort.
2008 Bluetec E320 is the best everyday car! averaging 37 mpg highway, 30 mpg combine, plenty of power, handling is excellent, best interior design, comfortable in long driving, perfect ergonomic design, perfect car.
Great car. Comfortable smooth, sports car handling, excellent craftsmanship incredible power. Not as quiet as the gas engine but very quiet for a diesel. You have to listen to hear it. I average 25mpg, as much as 38 mpg on the road. However the GPS stinks. It's the worst. Difficult to use and I dont need to find "border crossings" in the USA. Just buy a Garmin, a 100 times better. Problems: transmission tends to clunk into lower gear as you slow down. Had a 2005 Benz with the same problem. Price of diesel a negative. Hate the center console, holds nothing. Service very expense. I would however, buy this car again.
I have owned one ML, two C-Class, four E-Class, two SL-Class,and two S- Class. This is the best all-round Mercedes I have owned. (The best best was the 1997 S-600). This car is faster than most sedans, and the engine is really really quiet. No one who drives with me knows it is a diesel. I tell them it is a diesel after I snap their head back while getting on the highway. Most people don't know that while driving in 'comfort' mode, the car leaves a stopped position in second gear because of the high tourque level in this vehicle.
Clean, strong and fast for a big car that gets 26MPG average and 35MPG on the highway. No odor or smoke ever, truly amazing. I have had it about a year now with no problems. I did upgrade to the 18" wheels for looks. The stock 16" ones were quiet and smoother ride.