The Buckler Mark XI was a closed coupe kit car built in 1950.

The Mark XI was essentially a lengthened version of the Buckler Mark X. The wheelbase was 94 in long with the car being an overall 134 in long. The Mark XI had a curb weight of 1345 lb and seated 3 people. Front and rear drum brakes were fitted as standard.

The Mark XI was fitted with a 72 cu in frount-mounted straight-four side-valve engine, the engine had a maximum power output of 37 hp at 5200rpm. Power was transmitted through a three-speed gearbox to the rear wheels

The cost of a car when new was £430.

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Buckler vehicles