The MG ZS 120 Stepspeed is a sedan/saloon with 4 doors and a front mounted engine which transmits its power through the front wheels.
Its engine is a naturally aspirated petrol, 1.8 litre, double overhead camshaft 4 cylinder with 4 valves per cylinder. This unit develops 115 bhp (117 PS/86 kW) of power at 5500 rpm, and maximum torque of 160 N·m (118 lb·ft/16.3 kgm) at 2750 rpm.
The power is supplied to the wheels by means of a continuously variable gearbox.
The MG ZS 120 Stepspeed weighs a quoted 1240 kg at the kerb.
Maximum speed claimed is 185 km/h, which is 115 mph, official fuel consumption figures are 11.9/6.5/8.5 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 203.0 g/km.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2620 mm | 103.1 inches | |
| Track/tread (front) | 1475 mm | 58.1 inches | |
| Track/tread (rear) | 1465 mm | 57.7 inches | |
| Length | 4532 mm | 178.4 inches | |
| Width | 1696 mm | 66.8 inches | |
| Height | 1386 mm | 54.6 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.73 | ||
| Kerb weight | 1240 kg | 2734 lb | |
| Weight distribution | |||
| fuel tank capacity | 55 litres | 12.1 [14.5] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.33 | ||
| Frontal area | 2.03 m² | ||
| CdA | 0.67 | ||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Rover | ||
| Engine code | |||
| Cylinders | Straight 4 | ||
| Capacity | 1.8 litre 1795 cc (109.538 cu in) |
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| Bore × Stroke | 80 × 89.3 mm
3.15 × 3.52 in |
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| Bore/stroke ratio | 0.9 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 16 valves in total |
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| maximum power output | 117 PS (115 bhp) (86 kW) at 5500 rpm |
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| maximum torque | 160 Nm (118 ft·lb) (16.3 kgm) at 2750 rpm |
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| Specific output | 47.8 kW/litre 65 ps/litre 64.1 bhp/litre 1.05 bhp/cu in |
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| Specific torque |
89.14 Nm/litre
1.08 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.5:1 | ||
| Fuel system | EMS3 fuel inj. | ||
| bmep (brake mean effective pressure) | 1120.1 kPa (162.5 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 448.75 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | 9.9 s | ||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 185 km/h (115 mph) | ||
| Power-to-weight ratio | Higher is better 94.03 PS/tonne (1000 kg) 0.09 PS/kg 69.16 kW/tonne (1000 kg) 0.07 kW/kg 92.74 bhp/tonne (1000 kg) 0.09 bhp/kg 0.04 bhp/lb |
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| Weight-to-power ratio | Lower is better 14.46 kg/kW 24.15 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 11.9/6.5/8.5 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 11.9/6.5/8.5 l/100km urban/extra-urban/combined | ||
| km/litre | 8.4/15.4/11.8 km/l urban/extra-urban/combined | ||
| UK MPG | 23.7/43.5/33.2 UK MPG urban/extra-urban/combined | ||
| US MPG | 19.8/36.2/27.7 US MPG urban/extra-urban/combined | ||
| Carbon dioxide emissions | 203.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | K | ||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | transverse | ||
| Drive wheels | front wheel drive | ||
| Torque split | N/A | ||
| Steering | power assisted rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | 11.60 m | ||
| Front suspension | I.DW.CS.ARB. | ||
| Rear suspension | I.MulitLi.CS.ARB. | ||
| Wheel size front | 6½J x 16 | ||
| Wheel size rear | 6½J x 16 | ||
| Tyres front | 205/50 R 16 | ||
| Tyres rear | 205/50 R 16 | ||
| Brakes F/R | VeDi/Di-S-ABS | ||
| Front brake diameter | 262 mm | ||
| Rear brake diameter | 239 mm | ||
| Braked area | |||
| Gearbox | continuously variable transmission | ||
| Top gear ratio | 0.44 | ||
| Final drive ratio | 4.05 | ||
| general | |||
| Carfolio.com ID | 110033 | ||
| Production total | |||
| Model code | |||
| RAC rating | 15.9 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2001 MG ZS 120 Stepspeed added 2003-05-02. Last modified 2013-02-28. |
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