Despite the ney sayers, I love my 2005 S320L CDI
Whilst it indeed does not have the performance of the petrol V8s, its not as bad as has been purported in this thread. As for the 'diesel' noise.. LOL.. i cant hear a thing in the car at all once its running.. the wonders of sound deadening and double glazing.
I use a local indy for work being done on the car, and they charge very reasonable rates (compared to a main dealer!)
The only thing I have had go wrong is a fuel pump and one of the HID bulbs failed.
I average 28-30mpg and can see 39-40mpg on a run.
I do longer runs in the car so made sense for me.. each to their own, thats what choice is about..
If I want fun, I go out on the bike, or pop out in the sporty number

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My S320 is the family car, and its veyy good at what it does