Beneath its understated sedan body lay the S85B50, a 5.0-liter naturally aspirated V10 engine—a rarity in the luxury segment. Developed in collaboration with Formula 1 engineers, this powerplant unleashed 507 horsepower at 8,250 rpm and 520 Nm of torque at 6,100 rpm, producing a symphonic exhaust note that peaked at a spine-tingling redline. Mated to a seven-speed SMG-III automated manual transmission (AMT), the E60 M5 catapulted from 0-62 mph in 4.7 seconds, with a top speed electronically limited to 155 mph (250 km/h). The SMG-III’s paddle shifters offered near-instantaneous gear changes, though purists often debated its lack of a traditional manual option.

The E60 M5’s design was a study in purposeful aggression. Subtle M-specific cues—flared wheel arches, quad exhausts, and 19-inch alloy wheels—hinted at its performance, while the interior combined premium leather, carbon fiber trim, and bolstered sport seats. Under the skin, a sport-tuned suspension, adaptive dampers, and upgraded brakes ensured the V10’s brute force was matched by handling precision. Despite its heft, the M5 E60 cornered with surprising agility, thanks to BMW’s Active M Differential and precise steering.

Decades later, the E60 M5 stands as a testament to BMW’s bold engineering era. Its V10 engine, a swan song for naturally aspirated performance before turbocharging dominated, remains a symbol of mechanical excess and driving passion. For collectors, the ¥1.85 million price tag now feels like a bargain for a sedan that combined F1-derived tech with daily usability—making the M5 E60 not just a car, but a legend that defined an era of uncompromising performance luxury.