Borgward Hansa 1500 RS History

The Borgward 1500 RS grew out of a record-breaking Hansa 1500 project and was first presented at the Frankfurt Motor Show in 1951. Nine cars were built and progressively developed through 1958, competing in the up-to-1500 cc class at Le Mans and other major events. Borgward engineer Karl Ludwig Brandt designed a purpose-built racing engine with twin overhead camshafts, four valves per cylinder, and direct fuel injection — technology that was genuinely advanced for the mid-1950s.

In its developed form the 1498 cc engine produced well over 113–115 PS at 6000 rpm with a 9.8:1 compression ratio, and eventually exceeded 160 PS in final trim. The chassis used a box frame with double-wishbone front suspension and a De Dion rear axle. The RS was broadly competitive but consistently outpaced by the Porsche 550, which possessed superior chassis dynamics; Borgward acknowledged this gap and ended the racing programme as the company's financial troubles mounted.