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Infiniti Q45 Premium

(2003 model)

Brief specs of 2003 Infiniti Q45 Premium

4-door 5-seater sedan (saloon), petrol (gasoline) 8-cylinder 32-valve V engine, DOHC (double overhead camshafts, twin cam), 4494 cm3 / 274.2 cu in / 274.2 cu in, 253.5 kW / 339.9 hp / 339.9 hp @ 6400 rpm / 6400 rpm / 6400 rpm, 451.0 N·m / 332.6 lb·ft / 332.6 lb·ft @ 4000 rpm / 4000 rpm / 4000 rpm, automatic 5-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)InfinitiIssued from2003
ModelQ45 PremiumIssued until
SerieQ45Number made
Model familyBody construction
Model codeBody designation
ManufacturerInfinitiCountryJP

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length5070 mm / 199.6 in / 199.6 inTotal (curb) weight1804 kg / 3977 lb / 3977 lb
Width1844 mm / 72.6 in / 72.6 inDry weight
Height1491 mm / 58.7 in / 58.7 inLoad capacity
Wheelbase2870 mm / 113.0 in / 113.0 inGross (max.) weight
Track front1590 mm / 62.6 in / 62.6 inTowing weight
Track rear1570 mm / 61.8 in / 61.8 inWeight distribution (front)54.0 % / 54.0 % / 54.0 %
Ground clearanceFuel capacity81 l / 17.8 UK gal / 21.4 US gal
Length/wheelbase ratio1.77  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.3Frontal area (A)2.34 m2 / 25.2 sq ft / 25.2 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.70 m2 / 7.5 sq ft / 7.5 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)17.4 kW / 23.4 hp / 23.4 hp (est.)

Engine

Engine CodeVK45DETotal number of cylinders8
Engine TypeV engine Total number of valves32
Engine ManufacturerNissanValves per cylinder4
Engine constructionaluminium block & headsBore93.0 mm / 3.66 in / 3.66 in
Fuelpetrol (gasoline)Stroke82.7 mm / 3.26 in / 3.26 in
Fuel detailsBore/Stroke ratio1.12
Fuel supplyMPFiEngine displacement4494 cm3 / 274.2 cu in / 274.2 cu in
Engine Main bearingsUnitary capacity561.75 cm3/cylinder / 34.280 cu in/cylinder / 34.280 cu in/cylinder
Cam DesignDOHC (double overhead camshafts, twin cam)Compression ratio10.5 : 1
SumpwetMax. output power253.5 kW / 339.9 hp / 339.9 hp at 6400 rpm / 6400 rpm / 6400 rpm
AspirationnaturalMax. torque451.0 N·m / 332.6 lb·ft / 332.6 lb·ft at 4000 rpm / 4000 rpm / 4000 rpm
Compressor typeN/AMaximum rpm6700 rpm / 6700 rpm / 6700 rpm
IntercoolernoMax. net output (power at the wheels)101.4 kW / 136.0 hp / 136.0 hp (est.)
CoolantwaterSpecific output56.4 kW/l / 1.240 bhp/cu in / 1.240 bhp/cu in
Catalytic converteryesSpecific torque100.4 N·m/l / 0.88 lb·ft/cu in / 0.88 lb·ft/cu in

Transmission

Transmission typeautomaticNumber of gears5
Wheel driverear wheel driveTop gear (drive) ratio0.83
  Final gear (drive) ratio3.13

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio188.5 kW/ton / 142.8 bhp/ton / 142.8 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
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
Steeringrack & pinion VPASSteering details
Turns lock-to-lock3.3Turning circle
Suspension frontIndependent, Coil springs, Anti-roll (anti-sway) bar (ARB)Suspension rearIndependent, Multi-link, Coil springs, Anti-roll (anti-sway) bar (ARB)
Wheels front7.5JJ x 18Wheels rear7.5JJ x 18
Tyres front245/45 R 18 VTyres rear245/45 R 18 V
Brakes frontventilated discBrakes rearventilated disc
Brake diameter front290 mm / 11.4 in / 11.4 inBrake diameter rear292 mm / 11.5 in / 11.5 in
Brakes detailsservo-assisted, ABS (anti-lock braking system)Braked area

Technical specifications and performance data of Infiniti Q45 Premium

Infobox

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