40 hp, 1,767 cc inline overhead-valve four-cylinder diesel engine, four-speed manual gearbox, four-wheel independent suspension, and four-wheel hydraulic drum brakes.

Wheelbase: 2,845 mm From 1946, Mercedes-Benz had a single model policy, out of necessity.

Recovery from World War II was slow, and the pre-war 170 V was the only model for which usable tooling had survived.

The standard model was a four-door saloon, but a number of commercial and special versions were derived.

Amongst them was the OTP Police Special.

Furnished only to official organisations, the Police Special was more basic than the 170 Cabriolets of the 1930s.

In the beginning, all were painted “Police Green”, but blue soon became the favoured colour.

It was the first 170 with an outside boot lid, which was a feature that was so useful that it was soon adopted for the civilian market.

This example of the OTP Police Special has been decommissioned and restored as a civilian four-door cabriolet.

It is red with bl...