This 1980 BMW 320-6 is finished in Polaris metallic silver over a blue cloth interior and shows 153,000 km. The 1,998 cc M20 straight-six, fed by a twin-carburetor setup, is rated at 122 hp and is paired with a five-speed manual gearbox. The seller reports a single owner for 39 years, an expert appraisal at €19,000 with the file available, and maintenance up to date. It is now offered by Open Air Imports with a 15-photo gallery.

The seller reports no rust anywhere on the car and describes its state of conservation as excellent; the gallery includes the trunk and rear wheel-arch areas, which present cleanly. The rear badge reads simply '320', as delivered on the six-cylinder cars.

Inside, blue cloth seats and door trims present in clean, original condition, with the upright dashboard and four-spoke steering wheel the model is known for. No air conditioning is fitted, as delivered in 1980.

The M20 six was the engine that set the 320-6 apart from the four-cylinder E21s. The seller reports the car maintained and current on its servicing, with a valid contrôle technique. It is sold with a minimum 12-month warranty.

The E21 was the first 3 Series, and the six-cylinder 320-6 is the variant enthusiasts look for: compact, carbureted, and analogue in a way later cars are not. A 39-year single-ownership example with an expert's file is a rare find.