With a price of 30,000 Deutsche Mark, the BMW 503 was extremely expensive even for affluent customers at the time. Unlike the 507, the 503 was offered as both a convertible and a coupe. Under the long hood, it had a V8 engine producing 140 horsepower, which was later upgraded to the 150 horsepower engine from the 507. The 503 remains a rarity to this day but has always lived in the shadow of the legendary 507. And both V8 models nearly bankrupted BMW.
