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240 Landmarks of Japanese Automotive Technology
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240 Landmarks TopPassenger Cars, Part 2 > Publica UP10
 Publica UP10
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The UP10 was a lightweight, cheap, and maneuverable popular passenger car with a front-engine rear-wheel drive set up and excellent levels of basic performance aspects for its class. Its acceleration, ride comfort, endurance, and spaciousness were particularly praised. The UP10 had a long development period, taking 6 years from the initial plans to the start of production. However, it still played a role in opening Japan's era of motorization, selling an impressive 200,000 units in its first 3 years of release. Its marketing campaign involved asking the public to come up with the name of the new car, and "Publica" was selected after over 1 million votes had been received. Its price, based on a Tokyo delivery, was 389,000 yen. Performance: the Publica had a water-cooled horizontally opposed 2-cylinder 700 cc engine mated to a 4-speed transmission. It featured a large number of light alloy die-cast and plastic parts, which lowered the vehicle’s weight and enabled a high top speed and acceleration for its class. In addition, the front-engine rear-wheel drive structure improved the weight distribution over the front and rear wheels and gave it excellent hill climbing abilities. Ride comfort: the Publica employed Japan's first 6.00-12 tires. The front and rear suspension used stabilizer-equipped torsion bars and semi-elliptical springs, respectively, and both were provided with shock absorbers.
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Storage location:TOYOTA AUTOMOBILE MUSEUM (41-100, Yokomichi, Nagakute, Nagakute-cho, Aichi-gun, Aichi-ken 480-1131)
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Year manufactured:1961
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Manufacturer:Toyota Motor Corporation
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Classification:Mass-production vehicle
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Current status:On public display: static
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Vehicle name / Manufacture
Vehicle name:Publica
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Model name:UP-10
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Company name:Toyota Motor Co., Ltd.
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Year manufactured:1961
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Vehicle type/usage:Passenger car
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Location of actual vehicle/replica:Toyota Automobile Museum
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Model / Weight
Style:Sedan
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Number of doors:2
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Passenger capacity:4
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Vehicle weight:580 kg
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Gross vehicle weight:800 kg
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Body / Size
Structure:Unit body construction
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Bumpers:Steel
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Step:None
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Overall length:3520 mm
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Overall width:1415 mm
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Overall height:1380 mm
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Tire size:6.00-12 2P
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Body / Axle / Driving / Others
Frame:None
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Front axle:Wishbone, balljoint torsion bar
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Rear axle:Semifloating banjo type
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Wheelbase:2130 mm
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Front tread x rear tread:1203 mm×1160 mm
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Steering:Worm and sector roller
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Dampers:Hydraulic double-acting cylinder (front/rear)
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Stabilizer:Torsion bar type (front)
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Features:Rear: Asymmetric semi-elliptical leaf spring
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Engine / Size / Power
Cooling/cylinder arrangement:Water-cooled/horizontally opposed 2-cylinder (U type)
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Valve train:OHV (side valve)
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Carburetor:Downdraft single diaphragm pump
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Bore x stroke:78×73 mm
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Displacement:697 mL
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Ignition system:Centrifugal governor, vacuum advance
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Max. power/r.p.m.:28 ps/4300 rpm
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Max. torque/r.p.m.:5.4 kgm/2800 rpm
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Supercharger:None
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Fuel tank capacity:25 L
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Fetures:Compression ratio: 7.2
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Hybrid
Hybrid system type:None
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Drive-train
Transmission:4 forward speeds, 1 reverse speed
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Drive system:FR
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Performance
Mode fuel efficiency:-
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