I let go of mine in under a week. Traded my 4/4 for a brand new M3W and while the brief ownership provided amusement, I was shocked at the long list of mods I would need to undertake to get it to an acceptable level. Bonnet almost flew off on day two, engine kept wanting to stall anytime I braked hard, bonnet catches kept popping off, steering wheel was an absolute nightmare to get on and off etc. It cost me a bit to buy back my 4/4 and a lesson learned for me.