The BMW 326 is a relatively rapid medium-sized sedan produced by the Bavarian firm between 1936 and 1941, and again briefly after 1945. It had an innovative design and sold well despite its relatively high price. It also had an unusually involved afterlife.

Designed by Fritz Fiedler, and first presented in February at the 1936 Berlin Motor Show, the 326 was offered for sale from May of that year. Featuring a box chassis that could readily be adapted for derivative models, the 326 was the first BMW available with four doors. Also innovative were the torsion bar rear suspension and the hydraulic brake control. The car was offered as a four-door sedan and as a two- or four-door cabriolet. The BMW 320, BMW 321, BMW 327, and BMW 335 were based on the 326. The streamlined form of the body contrasted with previous relatively upright BMWs: drag was presumably reduced further by including a fixed cover over the spare wheel at the back.

The 1971 cc straight 6 engine was a slightly bored out version of the 319’s power plant. In the 326 application, it was fed by twin Solex carburetors to produce a claimed maximum output of 50 PS (37 kW) at 3750 rpm. The advertised Autobahn top speed was 115 km/h (72 mph).