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Fiat 12-15 HP Model Zero

(1912 model)

Brief specs of 1912 Fiat 12-15 HP Model Zero

2-door 4-seater roadster, petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, 1846 cm3 / 112.6 cu in / 112.6 cu in, 14.2 kW / 19.0 hp / 19.0 hp @ 2000 rpm / 2000 rpm / 2000 rpm, manual 4-speed transmission, rear wheel drive, 63 km/h / 39 mph / 39 mph top speed

units: metric UK US

Basic (general) data

Marque (make)FiatIssued from1912
Model12-15 HP Model ZeroIssued until
Serie12 HPNumber made
Model familyBody construction
Model codeBody designation
ManufacturerFiat GroupCountryIT,BR,AR,TR


Base platformNumber of doors2
Bodywork typeroadsterNumber of seats4
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length3660 mm / 144.1 in / 144.1 inTotal (curb) weight1200 kg / 2646 lb / 2646 lb
Width1450 mm / 57.1 in / 57.1 inDry weight
Height1800 mm / 70.9 in / 70.9 inLoad capacity
Wheelbase2645 mm / 104.1 in / 104.1 inGross (max.) weight
Track front1200 mm / 47.2 in / 47.2 inTowing weight
Track rear1200 mm / 47.2 in / 47.2 inWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.38  


Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.22 m2 / 23.9 sq ft / 23.9 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)


Engine CodeTotal number of cylinders4
Engine Typestraight (inline) Total number of valves8
Engine ManufacturerFiatValves per cylinder2
Engine constructionBore70.0 mm / 2.76 in / 2.76 in
Fuelpetrol (gasoline)Stroke120.0 mm / 4.72 in / 4.72 in
Fuel detailsBore/Stroke ratio0.58
Fuel supplyEngine displacement1846 cm3 / 112.6 cu in / 112.6 cu in
Engine Main bearingsUnitary capacity461.50 cm3/cylinder / 28.162 cu in/cylinder / 28.162 cu in/cylinder
Cam DesignCompression ratio4.2 : 1
SumpMax. output power14.2 kW / 19.0 hp / 19.0 hp at 2000 rpm / 2000 rpm / 2000 rpm
AspirationnaturalMax. torque at
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)5.7 kW / 7.6 hp / 7.6 hp (est.)
CoolantwaterSpecific output7.7 kW/l / 0.169 bhp/cu in / 0.169 bhp/cu in
Catalytic converternoSpecific torque


Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio


Acceleration 0-50 mph (80 km/h)Top (maximal) speed63 km/h / 39 mph / 39 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio15.8 kW/ton / 12.0 bhp/ton / 12.0 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions


Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontLive axle, Semi-elliptic leaf springsSuspension rearLive axle, Quarter-elliptic leaf springs
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Fiat 12-15 HP Model Zero


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