The Peugeot 403 is a mid-size car manufactured and marketed by Peugeot between May 1955 and October 1966. A total of 1,214,121 of all types, including commercial models, were produced, making it the first Peugeot to exceed one million in sales.
History
The 403 debuted as a sedan/saloon on 20 April 1955 at the Trocadéro Palace in Paris. For several months before it was launched, numerous 403s, their badges removed, were driving on the roads near the manufacturer's Sochaux factory. They became so familiar that the locals no longer noticed them, but attracted the Paris motoring press to a town usually of little interest to the national media.
The TN3 engine size gave the car a "tax horsepower" of 8 CV, which placed it a class below the soon-to-be-replaced 11 CV Citroën Traction, but at least one class above the small cars produced by the principal competitor manufacturers.
When it was first shown, and until after 1958, the leading edge of car's nose carried an angular, forward-leaning chrome lion bonnet ornament – as Peugeot's trade mark. That was removed for 1959, due to safety concerns, and the logo was incorporated into a shield-shaped grill emblem.
Subsequently the semaphore-style trafficators on the C-pillars were replaced with flashing indicators within the light cluster. The front lights were modified to conform to new standards and in 1957 parallel windscreen wipers were substituted for the original "cross hands" design featured at launch.
Although, the car was subject to numerous improvements during production, mostly minor. Improvements for 1959, included moving the nozzles for the windscreen washer from the strip of metal between the base of the windscreen and the bonnet/hood a short distance to the rear edge of the bonnet/hood itself. This was also the year the semi-circular ring inside the lower half of the steering wheel operating the horn was replaced by a full circular horn-ring.
Design
Styled by Pinin Farina, the 403 featured ponton, three-box styling incorporating, except on the most basic models, a metal sunroof. The collaboration with PininFarina marked the start of a partnership which would see the Italian designer producing designs for Peugeot, including those many mainstream volume models, for more than fifty years. Regarding the 403 itself there were persistent rumours that the design was one originally intended for a replacement Fiat 1900 which had been rejected when Turin had decided to defer replacement of the Fiat for another four years.
Unusual in Europe at the time were the wide, 90° opening rear doors. Also unusual were the windows in the rear doors that lowered fully, despite the intrusion of the wheel arch into the door frame.
Engine
The 403 used an enlarged version of the Peugeot 203's 1290 cc petrol engine. Displacing 1468 cc, the straight-four unit employed pushrod-actuated valves and hemispherical combustion chambers and a crossflow cylinder head to produce at about 4,900 rpm and of torque at 2,500 rpm. Power increased to in 1958. An unusual feature at the time was the thermostatically controlled engine fan which cut out when the engine temperature fell to 75°C and reengaged when the engine temperature increased to 84°C. Claimed advantages included an improvement in fuel consumption of between 5% and 10% according to average speed and the avoidance, under many conditions, of fan noise. A small hot water-activated heating device for the carburetor linked to the heater for the passenger cabin — operating only when the driver activated the cabin heat, but not when the ambient temperature was high enough for the heater to be left off.
A diesel powered Peugeot 403 estate was introduced in the Autumn of 1958, the first of a long line, followed by a diesel saloon a year later.
After the 203's discontinuation in 1960, a version of its 1290 cc powerplant became available as an option on a reduced specification version of the 403, branded initially as the "403 Sept" ("7") and soon afterwards as the "403 Berline Luxe". Car tax in France was mostly based on engine size, and the smaller engined 403 fell within the 7CV taxation class rather than the 8CV of the bigger version.
Transmission
The 403 used a manual 4-speed all-synchromesh transmission driving the rear wheels. The gear change lever stuck out from the right side of the steering column.
For the Paris Motor Show in October 1957 the manufacturer offered, at extra cost, an electro-magnetic Jaeger automatic clutch, activated when changing gear.
Interior
The front seats reclined, allowing their seat backs to be flush with the cushions of the rear seat, creating a "couchette".