The ZR 120 Stepspeed is a road car from MG, with front wheel drive, a front located engine and a 3 door hatchback body style.
Its 4 cylinder, double overhead camshaft naturally aspirated engine has 4 valves per cylinder and a displacement of 1.8 litres. It produces power and torque figures of 115 bhp (117 PS/86 kW) at 5500 rpm and 160 Nm (118 lbft/16.3 kgm) at 2750 rpm respectively.
A continuously variable 'box delivers the power to the wheels.
It weighs a stated 1160 kg at the kerb.
Its maximum speed claimed is 180 km/h or 112 mph, official fuel consumption figures are 11.5/6.3/8.2 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 196.0 g/km.
Full specs
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| Carrocería | |||
|---|---|---|---|
| Carrocería | 4/5 seater hatchback | ||
| Número de puertas | 3 | ||
| diseñado por | |||
| Dimensiones y pesos | |||
| Distancia entre ejes | 2500 | 98.4 | |
| Vía delantera | 1472 | 58 | |
| Vía trasera | 1457 | 57.4 | |
| Longitud | 4011 | 157.9 | |
| Ancho | 1688 | 66.5 | |
| Altura | 1400 | 55.1 | |
| Despeje del suelo | |||
| Relación Largo:Dist.entre ejes | 1.6 | ||
| Peso en vacío | 1160 kg | 2557 | |
| Distribución del peso (% adelante) | |||
| Capacità serbatoio | 50 litres | 11 [13.2] UK [US] gal. | |
| Aerodinámica | |||
| Coeficiente de penetración | 0.39 | ||
| Superficie frontal | 2.03 m² | ||
| SCx | 0.79 | ||
| Tren motriz | |||
| naturally aspirated petrol | |||
| Fabricante del motor | Rover | ||
| Código de motor | |||
| Número de cilindros | Straight 4 | ||
| Cilindrada | 1.8 litre 1796 cc (109.599 cu in) |
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| Diámetro × Carrera | 80 × 89.3 mm
3.15 × 3.52 in |
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| Relación diámetro/carrera | 0.9 | ||
| Distribución | double overhead camshaft (DOHC)
4 válvulas por cilindro 16 Total de válvulas |
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| Potencia nominal | 117 PS (115 bhp) (86 kW) a 5500 rpm |
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| Par motor máximo | 160 Nm (118 ft·lb) (16.3 kgm) a 2750 rpm |
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| Potencia específica | 47.7 kW/litre 64.9 ps/litre 64 bhp/litre 1.05 bhp/cu in |
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89.09 Nm/litre
1.08 ft·lb/cu3 |
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| Materiales de block / culata | |||
| Lubricación | Cárter húmedo | ||
| Relación de compresión | 10.5:1 | ||
| Alimentación | MEMS3 | ||
| 1119.5 kPa (162.4 psi) | |||
| Maximum RPM | |||
| Casquillos de cigüeñal | 5 | ||
| Engine coolant | Water | ||
| 449 cc | |||
| Aspiración | Normal | ||
| Compresor | N/A | ||
| intercooler | None | ||
| catalizador | Y | ||
| Rendimiento | |||
| 0-80km/h | |||
| 0-60mph | 9.5 s | ||
| 0-100km/h | |||
| 0-160km/h | |||
| 0-400m | |||
| 0-1000m | |||
| Velocidad máxima | 180 km/h (112 mph) | ||
| Power-to-weight ratio | Higher is better 100.52 PS/tonne (1000 kg) 0.1 PS/kg 73.93 kW/tonne (1000 kg) 0.07 kW/kg 99.14 bhp/tonne (1000 kg) 0.1 bhp/kg 0.04 bhp/lb |
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| Weight-to-power ratio | Lower is better 13.53 kg/kW 22.59 lb/bhp |
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| Consumos | |||
| Consumo de combustible | 11.5/6.3/8.2 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 11.5/6.3/8.2 l/100km urban/extra-urban/combined | ||
| km/litre | 8.7/15.9/12.2 km/l urban/extra-urban/combined | ||
| UK MPG | 24.6/44.8/34.4 UK MPG urban/extra-urban/combined | ||
| US MPG | 20.5/37.3/28.7 US MPG urban/extra-urban/combined | ||
| Emisiones de CO2 | 196.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | J | ||
| CO2 Effizienz (DE) | |||
| Chasis | |||
| Ubicación del motor | front | ||
| Engine layout | transverse | ||
| Tracción | front wheel drive | ||
| Alimentación | N/A | ||
| Dirección, tipo | |||
| turns lock-to-lock | |||
| Turning circle | 11.60 m | ||
| Suspensión delantera | I.MS.CS.ARB. | ||
| Suspensión trasera | I.CS. | ||
| Ruedas delante | 6½J x 16 | ||
| Ruedas detrás | 6½J x 16 | ||
| Neumáticos delante | 205/50 R 16 | ||
| Neumáticos detrás | 205/50 R 16 | ||
| Brakes F/R | VeDi/Di-S | ||
| Front brake diameter | 262 mm | ||
| Rear brake diameter | 239 mm | ||
| Braked area | |||
| Transmisión | continuously variable transmission | ||
| Eje trasero desmultiplicación | 0.44 | ||
| Desmultiplicación grupo cónico | 5.76 | ||
| General | |||
| Carfolio.com ID | 109626 | ||
| Unidades producidas | |||
| Model code | |||
| RAC rating | 15.9 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2001 MG ZR 120 Stepspeed added 2003-05-02. Last modified 2013-02-28. |
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