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£20,776 (Est: £13,438 - £17,917)

1982 BMW 635CSi "The Observer Coupe

United States • 13 Aug 2026 • Lot 37

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Vehicle Details

AI Listing Summary

This is a unique, one-off 1982 BMW 635CSi "The Observer Coupe" coachbuilt by MGA Developments, featuring a custom retractable glass roof system. It has been extensively restored and documented, with low mileage, making it a special piece of automotive innovation.

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Condition 

8

The car has undergone a comprehensive restoration and refurbishment in 2017, with documented service records dating back to 1989. It has low mileage (19,315 miles) and is described as remarkably well-preserved, indicating excellent overall condition.

/ 10

Transmission:

Automatic

Chassis No:

WBAEC7209C8175000

Odometer:

19,315 miles

Reg Number:

TBL 522Y

RHD/LHD:

LHD

3,430cc SOHC Inline 6 Bosch Motronic Fuel Injection 182bhp at 5,400rpm 4-Wheel Independent Suspension 4-Wheel Disc Brakes * A unique, coachbuilt machine * Originally developed with a retractable glass roof * Well documented * A special, one-off BMW Grand Tourer THE CAR OFFERED Conceived as a technological showcase and design statement, this remarkable one-off BMW 635 CSi stands among the most intriguing British coachbuilt projects of the 1980s.

Internally designated "Special Project M3" by Coventry-based MGA Developments Ltd., the car was created to demonstrate the company's full spectrum of engineering, styling, and prototype-development capabilities.

Established in 1979 by Mike Gibbs, MGA provided design-to-production services for major automotive manufacturers, and this ambitious project served as its ultimate calling card.

Supplied new by BMW Great Britain in 1982 and financially supported by The Observer newspaper, the donor 635 CSi was transformed into what was envisioned as t...

Points of note

£1,662

Lowest Price (Since 2020)

£15,187

Median Price (Since 2020)

£152,512

Highest Price (Since 2020)

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World Record

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Top 30%

The sale price places it in the top 30% of sold prices we've ever seen for the BMW 6 Series (E24) 635CSi

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Previous Sales

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MOT Information

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