Background
"This [the 403] is a car which is built almost regardless of cost with the sole purpose of providing the sporting driver with all the performance he wants - in luxury.” The Light Car magazine, December 1953.
With the introduction of the 401 - the first of its exquisitely styled aerodynes - Bristol began to move away from the pre-war design the company had inherited from BMW.
Carrozzeria Touring provided the Superleggera method of body construction that overlaid alloy panels on a lightweight tubular-steel framework, while the low-drag shape was achieved after hours of experimentation in the Bristol Aeroplane Company's wind tunnel.
The 401 continued to use its predecessor's running gear and BMW-based, 2.0-litre, six-cylinder engine with its ingeniously arranged, pushrod-operated, inclined valves. The gearbox remained a manual four-speed unit with first-gear freewheel.
With the introduction of the 403 in 1953, Bristol improved on what was already an exemplary Grand Tourer, the newcomer's apparently unchanged appearance disguising a number of important changes.
The engine remained a 2.0-litre six of basically BMW design but the alloy cylinder head was new and helped liberate 100bhp, up from 85. The increase in straight-line performance (top speed was now in excess of 100mph) was matched by improvements to the running gear in the form of a front anti-roll bar and finned light-alloy brake drums.
The Bristol 403 was manufactured from 1953 to 1955 by the Bristol Aeroplane Co., which later became Bristol Cars.
Only 287 403s were ever made.
As with its predecessors in the 400 series, it had the highly distinctive ‘aerodyne’ shape that helped it slip through the air like an oiled otter through a carp pond.
In common with all the early Bristols, it was way ahead of its time when it was launched and was fabulously modern - in design, in engineering and in features.
Even 68 years later you can still see the imagination of the aircraft designers and visionary engineers behind the aerodynamic, flowing, sculpted aluminium body, push-button doors, internal bonnet/boot releases, fresh-air or recirculated heating/ventilation, automatic reversing lights, multi-adjustable seats and alloy petrol tank.
It must have made other cars of the time seem positively antiquarian.
It looks like a car that’s been designed by people who’ve never been shown previous examples of what a car looks like, where the levers and switches are ‘meant’ to be and how things usually work.
It’s been conceived and built from first principles and on the basis that conventional wisdom is there to be challenged.
And it’s all the better for that, in our opinion.
Powered by the legendary, BMW-derived pushrod straight-six ‘328’ engine,
the 403 was a revelation in terms of performance and handling. Capable of 106mph in an era when very few cars were, the car’s low weight, supple suspension and light steering gave it remarkable degree of agility, sophistication and liveliness.
In our opinion, this could very well be the most expertly, comprehensively and expensively restored Bristol 403 in existence.
It is, quite frankly, in extraordinary condition and is a revelation to drive.
It’s very special indeed.







