M3 Lime Rock Park Edition, both the final model years of their respective generations. In full disclosure, the E46 was in more of a "driver's" condition with over 60,000 miles on the odometer, while ...

but BMW arguably started the genre when it slotted the 3-litre diesel mill into the facelifted E46 and created a popular, sporting yet frugal, diesel convertible. Since then, several manufacturers ...