You guys have no provision for factory approved upgrades in your format. I'm selling a late model BMW with serious upgrades that I've only tacked a fraction for and I have no way to supplement your evaluation as a price higher than a stock car. This is a faulty restriction for sellers. Specifically, A BMW M235i is worth one price. A BMW M235i tuned to DINAN Stage 2 is a whole different animal.

Price it at what you think it is worth and then explain it in the description. Anyone that knows BMW's should understand.

It is not us guys, it is those other guys, the ones that run this god awful site.

Not really. As someone who builds cars for a living, let me break this down for you: Take whatever money you've spent in modifications...add it all up...now subtract 75-80% of that value. What's left is what you're going to be able to add to the price, which will STILL put you higher than a stock version. If you're selling a modified car, I would advise selling it to an enthusiast site and not here. Besides, there's not enough cars modified exactly like yours to even begin a comparative market price. Owners of modified vehicles 99% of the time are asking too much for their cars and trying to get back 50% or more of the money they've blown on making a car THEIRS. And it NEVER happens. If you think I'm wrong, list it privately and set whatever price you want. Wait and see what offers you get and how long it takes to move it. ANY CAR, TRUCK, OR SUV IS ONLY WORTH WHAT SOMEONE IS WILLING TO PAY FOR IT RIGHT NOW, RIGHT THIS SECOND. Period.