This incredibly rare piece of BMW history has been in the seller’s care for the past 35 years.

Professionally restored in 2009 by Classic Restorations Ltd of Alyth in Perthshire, it is finished in metallic blue and has had the original V8 engine replaced by a BMW M30 2.8-litre six-cylinder engine from the E12 5 Series range of cars.

A five-speed manual gearbox plus an electronic ignition system and an electric fuel pump were added at the same time, and further modifications include Monroe ‘Load Leveller’ pneumatically adjustable rear shock absorbers, refurbished rear leaf springs, new front dampers, and an uprated servo-assisted braking system.

These changes work in conjunction with the standard all-round disc brakes and power steering to create a car the seller describes as being ‘great fun” and “a great family car over the years”.

Reliable enough to have been driven down to Le Mans as well as across Scotland over the past three decades, he discovered it in 1989 while visiting his...