The Q45 Premium is a rear wheel drive saloon (sedan) car with a front placed engine, sold by Infiniti.
Power is produced by a double overhead camshaft, 4.5 litre naturally aspirated 8 cylinder motor, with 4 valves per cylinder that develops power and torque figures of 340 bhp (345 PS/254 kW) at 6400 rpm and 451 N·m (333 lb·ft/46 kgm) at 4000 rpm respectively.
The power is supplied to the wheels via a 5 speed automatic gearbox.
Stated kerb weight is 1804 kg.
Full specs
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Applicable to the USA domestic market(s). | ||
| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2870 mm | 113 inches | |
| Track/tread (front) | 1590 mm | 62.6 inches | |
| Track/tread (rear) | 1570 mm | 61.8 inches | |
| Length | 5070 mm | 199.6 inches | |
| Width | 1844 mm | 72.6 inches | |
| Height | 1491 mm | 58.7 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.77 | ||
| Kerb weight | 1804 kg | 3977 lb | |
| Weight distribution | 54% front | ||
| fuel tank capacity | 81.1 litres | 17.8 [21.4] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.3 | ||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Nissan | ||
| Engine code | VK45DE | ||
| Cylinders | V 8 | ||
| Capacity | 4.5 litre 4494 cc (274.241 cu in) |
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| Bore × Stroke | 93 × 82.7 mm
3.66 × 3.26 in |
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| Bore/stroke ratio | 1.12 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 32 valves in total |
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| maximum power output | 345 PS (340 bhp) (254 kW) at 6400 rpm |
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| maximum torque | 451 Nm (333 ft·lb) (46 kgm) at 4000 rpm |
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| Specific output | 56.4 kW/litre 76.7 ps/litre 75.7 bhp/litre 1.24 bhp/cu in |
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| Specific torque |
100.36 Nm/litre
1.21 ft·lb/cu3 |
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| Engine construction | aluminium block & heads | ||
| Lubrication | wet sumped | ||
| compression ratio | 10.5:1 | ||
| Fuel system | MPFi | ||
| bmep (brake mean effective pressure) | 1261.1 kPa (182.9 psi) | ||
| Maximum RPM | 6700 rpm | ||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 561.75 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | |||
| Power-to-weight ratio | Higher is better 191.09 PS/tonne (1000 kg) 0.19 PS/kg 140.54 kW/tonne (1000 kg) 0.14 kW/kg 188.47 bhp/tonne (1000 kg) 0.19 bhp/kg 0.08 bhp/lb |
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| Weight-to-power ratio | Lower is better 7.12 kg/kW 11.89 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Carbon dioxide emissions | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | |||
| turns lock-to-lock | 3.300 | ||
| Turning circle | |||
| Front suspension | I.CS.ARB. | ||
| Rear suspension | I.MultiLi.CS.ARB. | ||
| Wheel size front | 7.5JJ x 18 | ||
| Wheel size rear | 7.5JJ x 18 | ||
| Tyres front | 245/45 R 18 V | ||
| Tyres rear | 245/45 R 18 V | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 290 mm | ||
| Rear brake diameter | 292 mm | ||
| Braked area | |||
| Gearbox | 5 speed automatic | ||
| Top gear ratio | 0.83 | ||
| Final drive ratio | 3.13 | ||
| general | |||
| Carfolio.com ID | 108251 | ||
| Production total | |||
| Model code | |||
| RAC rating | 42.9 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2003 Infiniti Q45 Premium added 2003-04-12. Last modified 2013-02-28. |
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