Do not worry HowardJ, This car will take the miles. Not that many have proved it yet, but they will. Look at E320s--same engine. There are many with 200k on the clock. Start changing the trans every 2 years or 25k. I owned a repair shop for 10 years and would tell my customers that the "fluid" in the part is ALWAYS cheaper than the "part." Is it over-kill? Maybe!!! But a few EXTRA qts of trans fluid is way cheaper than a rebuilt trans. Same goes for the coolant, brake fluid, and power steering fluid. People change the engine oil on a regular basis, but leave the others "out-to-dry." Every fluid every 2 years or 25k---cheap insurance.

I have a friend who bought his 16 years old daughter a SLK 320 with 168,000 on it. She has put another 15k on it, and it is in great shape. So there is the same basic car with 180+ on her!!!! Enjoy!!!!