I bought a 2nd hand tow bar for my 1994 220 sli. I know it was previously fitted to a similar car, same year. The end nearest the towball has a bracket designed to fit through the pair of holes, (suitably enlarged and with spacers to fill box section) to the right one of which centre lug on bumper is screwed.
The bracket fits in the towing eye but is about 1/4" out of position, the towing eye preventing it moving into line with the holes. Anyone else experienced this?
Looks like only solution is to cut off towing eye or reposition bracket on bar by cutting/rewelding - neither of which I feel should be necessary - the back of the car appears to have all it's original/straight factory panels.

On ours the towbar fitted alongside the towing eye and a strap went through the towing eye from memory. (It was a long time ago!). I think I sold the towbar to someone on here so they may have some pics to illustrate. It seemed odd fitting it but it worked fine and was central on the car when finished. It had two bolts one side of the towing eye and one on the side which the towbar butted up against I think.

mine bolted through towing eye with some big spacers and a round insert to fit in towing eye was same on 200 and 400 tourer and my mk3 200

Thanks for the replies; rather than mess around with the car's towing eye I elongated the holes in the bracket on the bar so that I could secure the bar when it was up against the eye. All sorted and I've used it to collect an engine in my trailer.