Just over two decades ago, BMW developed a prototype M3 Touring based on the E46 M3 generation on sale at the time. The production green light was never given but BMW decided to hold on to the ...

But BMW never built a production M3 sedan or wagon for this generation, only coming so close as the one-off E46 M3 Touring concept. That oversight has been corrected by customizers, which brings ...

The naturally-aspirated unit received a compressor kit and other upgrades, resulting in an output of 567 hp (423 kW / 575 PS) which is far more than the 338 hp (252 kW / 343 PS) of the stock E46 M3.