Hi Mate,
Hope you are good. I've often struggled with E class coupes. I think they are a decent car and quite good value but problem is they just aren't hugely desirable.
Your pictures could be a lot better. Silver is hard work but I would put some effort in. See on your pics the bumpers look like its a different colour. They all do on silver but try to hide it.
Also the chrome window surrounds really could be better cleaned up so they don't look all TFR marked. A bit of peek polish. Do some pics with windows up, windows down. Try and find somewhere better for the pics than the side of the road just a nice open car park or something.
When a buyer / prospective buyer is online they have 100s / 1000s to look at don't they so you have to get the first image to be what I think of as a thumb stopper. A really good eye catching shot that makes them stop what they are doing and click into your car.
If its not gone after 30 daysI would probably chuck some window tint on it and then black or grey wheels and maybe even a cheap ebay rear lip spoiler and put the price up 500 just to cover cost and then get it gone, but then again 99% of my stock looks like that.
I can't stress enough that video sells cars and is the best selling tool. That car will look miles better with a video. Probably 75% of the other cars you are up against won't have a video so you will automatically be better and you can show the various bits and pieces working.
A couple of vids/ pics of e class coupes done by the lad we have doing them if it gives inspiration.
https://www.rscarsales.com/used-mercedes-benz-e-class-sandbach-cheshire-3150473
https://www.rscarsales.com/used-mercedes-benz-e-class-sandbach-cheshire-3147619