Is the BMW M3 a good investment?

The thesis

The E92 M3 is the only M3 ever fitted with a naturally aspirated V8 (4.0L S65, 414hp, 8,300rpm), and the last M3 coupe before BMW split coupes into the M4 line. Six-speed manual examples, especially late Competition Pack cars, are climbing. A recent ultra-low-mileage Competition sold for $212k USD, setting a record, though typical UK examples sit £35–60k. The S65 V8 sound and manual transmission are treasured; prices stable but showing early firming, particularly for low-mileage, well-documented cars. Sits below your budget floor but represents blue-chip modern classic potential at accessible pricing—however, you want to maximize budget, so this undershoots.