Is the BMW M3 CSL a good investment?

The thesis

The E46 M3 CSL is the ultimate E46 and the last naturally aspirated M3. Only 1,383 built (422 RHD for UK), making it genuinely rare. The S54 3.2L inline-six is revered, and the lightweight ethos (110kg lighter than standard M3) is peak BMW Motorsport. Recent UK sales: £62k–£76k for good examples; highest recorded £280k in Germany (Nov 2022) for pristine low-mile car. Average is £82k. Low-mileage, well-documented cars are scarce and will continue appreciating as last analog M3.