# 1978-1989 BMW 635CSi The BMW 635CSi represents the pinnacle of the E24 6 Series, blending grand touring elegance with genuine sporting capability. Powered by a silky 3.5-liter inline-six producing around 215 horsepower, this graceful coupe offered effortless autobahn cruising wrapped in Giorgetto Giugiaro's timeless "shark nose" styling. Enthusiasts praise its balanced handling, characterful engine, and impeccable build quality, though early models suffered electrical gremlins and complex mechanicals. It's celebrated for pioneering the luxury sports coupe segment and remains iconic for its distinctive pillarless design and sophisticated presence. Today, the 635CSi appeals to collectors seeking an appreciating classic with usable performance and those wanting a stylish weekend GT. Well-maintained examples offer remarkable driving pleasure, though prospective owners should budget for maintenance—these aging BMWs demand attention but reward with an unmatched blend of 1980s sophistication and driving engagement.
The E24 635CSi requires premium fuel and expensive BMW parts. Common issues include fuel injection system failures, aging wiring harnesses, and rust in floor pans/shock towers. The manual gearbox is reliable, but automatic transmissions are problematic. Collector car insurance is often affordable. Expect higher-than-average maintenance costs typical of 1980s European luxury cars.
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