Originally Posted by NISFAN
In E30 we had the 318iS, 325iS, etc they were same as 318i and 325i but with sporty styling tweaks, alcantara cloth, basket weave wheels, blacked out chrome, much like M Sport today. Audi copied the S and BMW moved on to M.
E30 318iS had a DOHC 16v engine whereas the 318i had SOHC 8v. Don't thing there was a 325iS tho there was a 325i Sport, which has no "M" branding at all (tho "M" branded items such as steering wheel & bodykit are available as options or retrofits for the whole range). There was also a 320iS but that was only available in Italy & very few other EU markets. That was basically a 2.0 version of the M3 engine fitted to a regular E30 bodyshell. Again no M branded items on that car.
If I remember correctly the first cars to have M-sport as a package was back in 99/00 with the E39 & E38. Audi's S-Line package didn't appear until the early noughties on the B6 A4.