The E21 generally remains the affordable classic in the 1970s to 1980s BMW range, being undervalued when compared to many of the E10s and E30s. It has all the right ingredients for the BMW faithful, too – especially in little six European trim. The 323i looked like a scaled down 6-series and it effectively was, but that doesn’t make it in any way unattractive. Alpina, too, had their had in this model, producing no less than seven variants in a short run. The most popular is the bad boy B6 2.8, but there was a lesser known M20 powered C1 2.3, too. With 170 horsepower and all the right Alpina details, it’s begging for the attention that it deserves: