BMW M635CSi Coupe

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With the demise of the gorgeous but outdated E9 3.0Csi and CSL coupes in 1975, BMW was in need of another glamorous two-door sportscar to liven up its image.

While the contemporary 3, 5 and 7 Series saloons were all great cars, they lacked visual drama and the new 6 Series made up for this in spades. Long, low and rakish with distinctive ‘shark nose’ frontal styling and an elegant thin pillared cabin, it was a natural rival to the Porsche 928 and the Jaguar XJS.

However, when BMW’s Motorsport Division got their hands on the car, they produced something that put both those rivals in the shade. Launched in 1983, the M635CSi shared essentially the same 3.5-litre 24-valve engine as the M1 supercar and also boasted a close-ratio five-speed manual gearbox, limited slip differential, sports suspension, M-Technic bodykit and uprated brakes. With some 286bhp and 262lbft on tap, it could charge to 60mph in just 6.1 seconds on its way to a top speed of 158mph.

Stable and sure-footed, it was a real driver’s car that was equally at home cruising the autobahn at three-figure speeds or hustling along a British B-road. Much more exclusive than the standard CSi, just 4,088 examples were made before production came to an end in 1989, only around 500 in right-hand drive. As with the E9, good ones are increasingly sought after today.

This 1985 M6 looks uber-cool in Alpine White with a Brown Buffalo leather interior. Refurbished in 2005, it has covered around 107,000 miles and comes with a good service record, work in recent times including a new timing chain at 96,700 miles, a gearbox overhaul at 97,086 miles, new clutch, propshaft overhaul plus numerous other items.

Supplied with its original handbook and service book with numerous service stamps from BMW main agents and German car specialists plus supporting invoices, it has an MOT until June 2016 and has been in regular use this summer.

One of the most desirable cars of its era, this is a blue chip classic that can only become more sought after as those who lusted after an M6 in their youth begin to enter the time of life when they may perhaps be able to afford one. So bid vigorously now or kick yourself for your hesitancy in times to come…