I have a oil leak on my ml320 i cant see where its coming from?

i had a oil change recently...a week later i noticed oil in my driveway i took it back to the place where i had the oil change i can't figure where its coming from any help will be greatly appreciatedI have a oil leak on my ml320 i cant see where its coming from?
well u didnt say how big a leak. if it is just a drop by drop thing it may be the oil pan drain bolt is leaking. this happens on occasion after a change. it may take a washer or a new drain bolt. put a piece of cardboard under the car and see where the drip hits. then get under car with flashlight and take a look straight up. good luck. btw ordinary liquid laundry detergent will clean oil off driveway.I have a oil leak on my ml320 i cant see where its coming from?
if you're gonna take it back to the people who did the oil change last, let them fix it. if you wanna fix it, i would start at the oil drain plug or the oil filter. sometimes those things are left loose. a new washer or plug should do the trick. be careful though, sometimes these plugs strip and on mercedes this can cost you a lot of money because a new oil PAN needs to be put on. i suggest you leave it alone and take it back where you had it serviced last