Safe and reliable- worth a little extra money to me.
I purchased my vehicle in 2012 with about 35000 miles and now have about 177000 miles on the car. With the exception of normal tune ups and tire replacement ( with sport pkg on car - tire replacement is more frequently) - I have had only one problem with my car. There was an issue inside the fuel tank and required the entire fuel tank to be replaced. Due to the way Mercedes has their fuel tank- this is quite costly but was covered by warranty up 10 years or 150, 000 miles. It happened just prior and I received a free rental and free repair. This was not a warranty I purchased- it was for every car that had a tank like this. With having a car over 6 years and the amount of driving I do - I am very pleased with the car. It is safety is huge as well. I would definitely do it again.