After several thousand miles in a 2015 S550 it would be hard to imagine a more well rounded or comfortable luxury sedan. Performance with the 449HP V8 is more than adequate for any circumstance, and handling is better than one might expect given the size and weight of the car, especially when in the sport mode. The ride is remarkable over any surface and the noise level is lower than any luxury car I've owned, including a Bentley Flying Spur. Mileage is runnning about 20 MPG in combination town and highway driving, getting 25+ on the highway. The technology features abound but are subtle enough not to intrude excessively, and aren't difficult to master. Not one problem so far. A home run Update: After another year and a half I am still in love with my S550. I've had absolutely no problems and I still love getting into it each day.
I have had the car for 3 months, 2500 miles and have absolutely no problems or issues. I went from a 2008 S550 to this 2015 S550 and the new one is a league of its own. Two days after purchase I went on a 300 mile trip on I10 here in Arizona. This gave me time to try and use all the options and gave me a very good comfort level with them. Some of my answers are based on my 2008 but again this car seems bullet proof. 7-12-16 Updating my review: After over a year I am still very happy with this car and love driving it. I wish the buttons to activate lane keeping, night vision etc were in another spot (below the radio screen?). Had regular service a few months ago and still no problems to report. This is a great car! 1-13-17 and 15,000 miles. Car is going strong with no problems other than having to replace the batteries in the key fob (done at no charge by the dealer).
I think that MBZ put too many bells and whistles on this car. I am paranoid about having any kind of a fender bender as the electronics will surely be messed up. I had to have new breaks and rotors put on at less than 19,000 miles. The climate control makes a weird noise sometimes (noise comes from engine) and per the dealership it is normal. Car is built to be quiet and then there is a weird alien sound. Voice control has improved but still not perfect. Sadly Siri works better in responding to text messages, etc. Massage on the seats is silly, along with the embracing seats. I have never used the "perfume" dispenser.
We've owned 5 MB's and to be honest I can identify with the people who have had problems. I've had issues with MB in the past but fortunately for us this time seems to be a charm. We did however have to have the battery replaced. It seems if one has the push button start/stop feature, one has to be sure the car is off and not in standby mode or it will deplete the battery. Now to the good stuff. This car rocks!! This is the best luxury car on the road bar none. I'd put it up against anything out there where luxury is concerned, including Rolls or Bentley. When compared to the uber luxury cars the new S-Class is a champ!
Prior vehicle was a 2014 E250. It had 40K miles with no issues. Reason for the S class was I wanted it and didn't want to wait for the diesel. The S is the finest vehicle I have driven. The ride stands out, it is smooth and does not float, handling is outstanding for a large vehicle. The seats are second to none, multiple adjustments and massage minimize driver fatigue. Interior design works very well ergonomically while looking great. With voice command and nearly every function within easy reach on the COMAND system driver can focus on driving while managing other features. The S550 provides more than enough power; haven't detected the turbo lag I experienced in the E Class