BMW 6 Series Classic Cars for Sale

History of the BMW 6 Series

BMW introduced the 6 Series in 1976 as a successor to the E9 coupés, setting a new standard for luxury GT models. The E24 debuted at the Geneva Motor Show and was initially assembled by Karmann before BMW moved production entirely in-house due to quality concerns. It was longer and wider than its predecessor, offering a greater sense of road presence and comfort. The design was the work of Paul Bracq, whose focus on a driver-oriented cockpit and forward-thrusting 'Sharknose' nose gave the car much of its character. Over 13 production years, the E24 maintained rear-wheel drive and an inline-six, reinforcing BMW’s brand DNA. In 1989, it made way for the E31 8 Series, reflecting evolving market demands.

Model History

Across its four generations, the 6 Series evolved substantially. The first (E24, 1976–1989) was shaped as a 2-door coupé with several six-cylinder engines, including the 628 CSi, 630 CS, 633 CSi, 635 CSi, and the range-topping M635 CSi/M6. The E24 benefited from multiple facelifts, notably in 1982, with improved chassis components derived from the 5 Series and adaptation to more advanced internals. After a 16-year pause, the 6 Series resumed in 2004 (E63/E64, coupé and cabriolet), followed by the F12/F13/F06 generations, synthesising lighter aluminium/steel construction and state-of-the-art electronics. Each generation introduced new variants and powerplants, with the F12/13/06 marking the appearance of Gran Coupé bodystyles and turbocharged engines, keeping the range contemporary while preserving its grand tourer roots.

Highlights and Unique Features

The BMW 6 Series appeals through distinctive engineering solutions: from its signature 'Sharknose' front (especially on the E24) and driver-focused dash to its combination of comfort and performance. Technical highlights include the use of high-performance straight-six engines, advanced electronic fuel injection, and comprehensive safety equipment for its time, including ABS and advanced braking systems. The interior was offered in a range of high-quality materials—velour or leather—with luxurious options like the 'Highline' full-leather interior, as well as Recaro sport seats in performance models. The car’s stature as a status symbol in the 1980s is reflected in exclusive features and its prominent roles in film and motorsport. Motorsport achievements underline its technical pedigree, including wins in the ETCC and endurance racing.

Technical Data

Special Editions and Collectible Models

The pinnacle of the E24 range is the M635 CSi (M6 in some markets), developed by BMW Motorsport and powered by the M88 engine from the M1 supercar—producing 286 hp and 340 Nm. This model featured uprated chassis, brakes, and unique styling cues such as spoilers, BBS wheels, and bespoke interior trim. The "Highline" late-series special had extensive leather upholstery extending to the dashboard and roof liner, powered memory seats, and unique wheel options. Early Karmann-built E24s, original colour/interior combinations and rare manual-transmission variants are also considered particularly desirable among enthusiasts.

Weak Spots and Common Issues

Thorough rust-proofing was implemented but common rust issues remain at the axles, sills, wheel arches, and jacking points. Electrical problems are not uncommon, particularly with interior electronics and sometimes with fusebox or relay connections. Window mechanisms, seat electronics, and sunroofs on later cars can show wear. Parts supply for many E24 components is generally good, especially for mechanical items shared with the E12/E28 5 Series, but premium for rare interior and electrical parts, especially for the 'Highline' or M models.

Engine, Performance, Transmission and Handling

Balancing comfort with agility, the 6 Series—especially the E24—was engineered for long-distance high-speed touring. Models like the 635 CSi delivered up to 218 hp and 310 Nm of torque, achieving 0–100 km/h in around 8.9 seconds and a top speed close to 227 km/h. The M635 CSi’s 286 hp trimmed the 0–100 km/h time to around 6 seconds with a maximum speed of 255 km/h (non-catalysed). The chassis, derived from the 5 Series, gives a composed, rear-wheel-drive experience with optional LSD, sports suspension, sport steering wheel, and ABS from the mid-1980s. Braking on M models is upgraded with larger, ventilated discs and four-piston front calipers. - 635 CSi: Notable for its blend of power, sport capability and day-to-day usability.

• M635 CSi/M6: Track-influenced, high-revving M88 engine, motorsport-derived underpinnings, rare in original 'Katlos' (non-catalytic) form.
• 628 CSi/630 CS/633 CSi: Earlier models, smooth inline-sixes, favoured for their classic GT character.

Interior, Comfort, Exterior and Design

Paul Bracq’s E24 design is celebrated for its distinctive 'Sharknose' profile and gently tapering greenhouse. The dashboard cants toward the driver with an ergonomically optimised switch layout. Early models featured chromed mirrors and trim; updates after the 1982 facelift included impact-absorbing bumpers and refined interiors. Leather and velour upholsteries were offered, with the 'Highline' providing extended leather coverage including pillars and headlining. Sports seats, memory electric adjustments, air conditioning, advanced HiFi systems, and on-board computers showcase BMW’s upmarket focus. Alloy BBS or Alpina wheels, individual colour and trim choices, slide/tilt sunroofs and accessory kits underlined exclusivity. US and international market versions differ in lighting, bumpers, and equipment details.

Other Relevant Features

The E24 featured comprehensive on-board tools, a spacious and practical boot, and a reputation for excellent long-distance comfort. Motorsport legacy adds historical significance, notably BMW’s wins at Spa-Francorchamps and the ETCC. The car competed directly with period GTs like the Mercedes SLC, Porsche 928 and Jaguar XJS, but stood apart for its driver engagement and mechanical robustness.

Summary

BMW’s 6 Series, especially the E24, set a benchmark for grand tourers, blending a bold design, strong engineering and exclusive features. While the classic 6 Series stands out in both supply and demand among enthusiasts, later generations introduced new technologies and bodies without losing sight of the GT ideal. The model’s engineering pedigree, unique driving experience, and breadth of technical and luxury options ensure its continuing appeal in the classic car market.