The BMW M6 and 635CSi (E24) represent a pinnacle of automotive engineering and design from the 1980s, embodying the spirit of grand touring powered by the legendary S38B35 engine. Each meticulously crafted vehicle reflects the expertise of BMW Motorsport Garching, enhancing their value and desirability among collectors. In Greenville, we invite owners of these remarkable machines to consider donating their vehicles to RevLocal, tapping into a vibrant collector community that cherishes these blue-chip automobiles.
With only about 5,800 examples produced, including the US-market M6 from 1987 to 1988, these vehicles are part of a limited grand tourer pool that continues to appreciate in value. The manual-transmission variants, in particular, command a premium due to their rarity and driving purity. Respect for preventive maintenance is essential to keep these icons in top condition, and we highly recommend engaging with qualified appraisers to determine the true value of your cherished BMW.
📖Generation guide
E24 M6 • 1987-1988
The US-market M6 features the hand-built S38B35 engine with 256hp, defined by its luxurious interior and spirited performance. Valued for its rarity with a collector's price range between $70-130k.
Euro M635CSi • 1984-1989
With a potent 286hp engine, the Euro M635CSi showcases BMW’s engineering prowess. It operates under a distinct value tier compared to the US M6, valued at $50-100k+.
635CSi Non-M • 1984-1989
Having the M30B35 engine delivering 182hp, this model is a lower-tier variant with a collector range of $20-50k+, offering a great entry point into BMW heritage.
Known issues by generation
The E24 M6 and 635CSi are renowned for their performance, yet they come with model-specific issues. For the M6's S38B35 engine, timing-chain replacement between 100-150k miles is crucial to prevent chain rattle, a potential $3-6k service at a BMW Motorsport specialist. The M30B35 engine in the 635CSi may experience head-gasket failures, necessitating preventive maintenance that could cost $2-4k. Rust at fender lips and seams is common due to salt-belt exposure, emphasizing the need for thorough inspections and potential restoration costs ranging from $8-25k.
Donation value by condition + generation
The E24 M6 and M635CSi are prime candidates for collectors, particularly those who appreciate the hand-built BMW Motorsport Garching heritage. Original-paint examples in halo colors like Diamond Black and Cinnabar Red are highly coveted, commanding premiums in the market. The manual transmission variant of the M6 can see values soar by $10-25k compared to its automatic counterpart, reinforcing the manual-only-purity ethos. As a collector, it’s crucial to verify the authenticity of the build-plate and engine block for accurate valuation, while resources like the Hagerty Valuation Tool or auction results from RM Sotheby’s can provide essential insights.
Donation process for this model
Donating your E24 M6 or 635CSi is a valuable contribution to preserving BMW's rich automotive legacy. We recommend working with a qualified appraiser, preferably one with documented expertise in vintage BMWs, to determine the value of your donation for IRS purposes—Form 8283 Section B will be required as these vehicles typically exceed the $5k threshold by several magnitudes. To ensure your vehicle retains its collector value, we advise enclosed transport for original-paint and matching-numbers examples, while proper documentation is essential for compliance with federal regulations.
Greenville regional notes
In Greenville, BMW owners can benefit from a thriving community of vintage enthusiasts and specialists. The local network includes dedicated independent restorers who understand the intricacies of the S38 and M30 engine codes, ensuring that your E24 is in capable hands. Events like Bimmerfest and the Vintage at Saratoga add excitement to ownership, while climate-controlled storage is recommended to protect low-mileage examples from the elements, especially in rust-prone areas.
FAQ
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Other model-specific guides
Vehicle Donation Resources & Guides
In-depth tax, paperwork, and donation logistics guides published by our editorial team — bookmark these before you donate.