1992 BMW M3 German Police
207 of 250 white with green graphics and black/chrome wheels.
The e30 needs no introduction, especially not the M3. As the first generation of the M3, this featured a high performance 4 cylinder that offered a handling advantage over the six cylinder 325i and 325 Mtech 1 (discontinued prior to the release of the M3).
Even though the six cylinder e30s could mostly keep up with the M3 in stock form, the M3 offered sport seats, the iconic box flares, and improved handling as well as a more frantic experience from keeping the S14 at the upper end of its range at all times.
I personally think the 190E is a much better car, but the e30 is the one that became popular.