1937 Mercedes-Benz Unknown 1.7L Petrol · TXS 720

Running a 1937 vehicle is significantly different from modern motoring. While the vehicle is exempt from both Vehicle Excise Duty (VED) and mandatory MOT testing in the UK due to its age, you should not skimp on safety-critical maintenance. Insurance will require a specialist 'classic car' policy, often based on an agreed valuation rather than market book value.

Fuel economy will be poor by modern standards, and parts availability for a 1685cc pre-war Mercedes engine can be challenging and expensive. Expect to source components through specialist clubs or bespoke fabricators. Annual running costs are highly variable depending on how much professional labour you require, but you should budget at least £1,500-£2,000 annually to keep it in roadworthy condition.

Despite the clean MOT pass in March 2026, a standard MOT test does not account for the structural integrity of a chassis this old. Inspect the underside thoroughly for signs of rust, rot, or previous 'patch' repairs to the frame. Given the very low mileage, check for perished rubber seals, hoses, and tyres, which can degrade even when the car is not being driven.

Pay close attention to the cooling and electrical systems. Pre-war wiring looms can become brittle and present a significant fire risk if not replaced or professionally inspected. Ensure the braking system—likely a mechanical or early hydraulic setup—has been overhauled, as these are the most critical components for safety on modern roads.