Amazing, quick, and rare. I've had this coupe for nearly 2 years, and over the 16k miles I've put on it I've had almost zero issues. The only part that went on me was the clutch release bearing, which led to a full clutch replacement not even 4 months ago.
This car isn't aesthetically perfect. The paint has numerous small chips and the car has even been keyed on the rear quarterpanel. The wheels have peeling paint and primer is showing. The price reflects these flaws. I purchased the car in this condition, knowing that I was going to daily drive it and not keep it as a garage queen. This led to a perfect balance for me. The car turns heads everywhere but I don't have to spend 20 minutes finding the perfect parking spot to avoid all other cars.

Please check out a good deal of additional pictures here:
https://imgur.com/a/WLxmp

Specs:
-Cosmos Black on Black Nappa interior
-S52 engine paired with ZF 5 speed manual transmission
- ~154500 miles and counting

Modifications:
-Bilstein dampers
-H&R sport springs
-Doug Whalen SS Shift Knob
-Stewart water pump installed ~13k miles ago, along with cooling system overhaul

Recent maintenance:
-~137500 miles: Preventative & Initial maintenance:
-Spark plugs
-Transmission fluid
-Differential fluid
-Valve cover gasket
-Giubo
-Liftgate air springs
-139,868 miles: (as mentioned) Cooling system overhaul including replacement of:
-Expansion tank
-Radiator
-Expansion tank hose
-Lower radiator hose
-Upper radiator hose
-Metal thermostat housing (upgrade)
-88°C thermostat
-Stewart water pump (arguably the best available)
-~151000 miles: Clutch replacement
-While transmission was out, all shift pin bushings replaced, fixing a fifth gear stick issue

I've performed all maintenance myself or with the help of a close friend, who used to a BMW master technician.
If you haven't already, I encourage you to take a look at http://www.mcoupebuyersguide.com
. You'll find other sale listings, production numbers, and price histories of coupes. You'll likely notice the following:

-This coupe is aggressively priced as compared to others
-Z3M coupe value has taken off in the last couple of years. The average price of an S52 coupe like this one was ~$20k at the start of 2015. It's now just short of $30k!
-There's a downward trend in the number of coupes available for sale
-This coupe is one of only 277 in Cosmos Black with Black Nappa interior

Please feel free to reach out with any questions. Answers to some common ones here:

-I am selling because I've just purchased a new car, and don't have space to keep this one.
-I have partial maintenance records from the previous owner, but they're not nearly exhaustive
-I've inspected the rear end of the car for the infamous "subframe issue". I removed a bit of the sound deadening for this inspection, and found that the spot welds are still intact, but a crack is forming. It's worth looking into, but I can't comment on whether or not failure will occur. I've included pictures in the linked Imgur album that show a difference between March 2016 and October 2017. I've adjusted my asking price accordingly. Note that I wasn't able to see any issues with crack propagation on the diff mount underneath the car.
-The car has just been smogged and passed on the first go.
-All body panels match the VIN

Asking $14600 OBO

If you do some research you'll see it's very difficult to find an M coupe this cheap without a salvage title. Again, please feel free to reach out with any questions!